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diy solar

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  • Post in thread: Canadian lithium Options MSI and Lynac

    I am not affiliated with these companies. Thought I'd share as it seems like there are a few Canucks on this forum. Marine Solutions Inc - Saw their goods at the boat show and bought a solar kit from them. This looks pretty robust - $2400CAD for 3kwh or 240AH. Seems like a nice option for a...
  • Post in thread: Xuba Electronics: DEAL - 280AH LiFePo4 cells. Purchase & Review

    I was looking at those capacity testers too -- building up a bench of tools -- It would be great for us noobs to have a list of tools to pick up (first, beginner set, next intermediate level... etc. I was also looking to pick up the ISDT battery balancer and charger as well... this is...
  • Post in thread: IWISS Lug crimper review

    I picked up this combo (high-leverage cutter and cable lug crimper). There is a cheaper crimper only option in stock now (that wasn't when I bought) I had read the reviews and noted that the crimper was not always sized correctly. My short assessment after wiring my boat. I used 6AWG to...
  • Post in thread: BatteryGo balance meter link?

    My decision point is whether I spend a few hundred $ on a bench power supply or if I just pick up an AC 12V LiFePO4 charger. (Given the Q8's ability to accept differing input DC voltages I thought perhaps I'd make an XT60 connector for say a victron smart blue 15A charger and use that as my...
  • Post in thread: Battery Case

    Has anyone seen larger cases like this one that could fit the 280Ah or 200Ah (or 150Ah) aluminum cells? The dimensions for the 280Ah cells are 174mm x 72mm by 205mm high The dimensions for the 200Ah cells are 175mm x 55mm by 205mm high. If I went with the 150Ah cells, I might go 2P4S and those...
  • Post in thread: Putting it all together

    So I've picked up a set of the 280Ah cells a solar charge controller and panels and the chargery BMS. Next up are a set of tools and meters but a question for the more experienced: Would you recommend I also pick up a set of lower AH cells to "learn" on? I want to wire them together on a...
  • Post in thread: LiFePO4 at dock

    Thanks to everyone who replied. All great points - I have the solar but have not installed it yet but i should do so soon. The shorepower charger has float and an absorption setting that could be turned off (14.4V and 13.8V for the LiFePO4 charge profile. Interesting there is one that is...
  • Post in thread: Canadian buyer hoping I don't get dinged by Customs import duties shipping from China

    Hey! I'm in Ontario Canada too. Been eyeing a few options (looking for around 200Ah and the Ruixu 100Ah -- Will's cautions noted) look tempting to construct a 200Ah cell. If there are other local enthusiasts, lmk. Maybe a group buy or local moral support!
  • Post in thread: Just Place new Order on Alibaba- 280AH x 8 for 1260.00 USD Delivered, Grade A to Canada

    How does this one compare with the one from Will's page? (that's the one I ordered)
  • Post in thread: 180W Battery tester will not draw current

    Tagging onto this thread. Has anyone been able to set the low voltage disconnect on this device? Mine is set at 0 but when I press and hold the button I cannot change the low voltage value. What am I doing wrong?
  • Post in thread: DC Clamp Meter

    I bought a holdpeak anemometer for sailing/race management. It's definitely YMMV - and you get what you pay for - the accuracy can be off by up to 10%. I purchased the Will recommended model (Klein CL380) off amazon for $106CAD earlier this year which was a pretty reasonable price for an...
  • Post in thread: LiFePO4 Voltage Chart?

    Yeah. Cell 4 seems to be the weak link. I will swap out the positions tomorrow, but tonight, after using only 29ah, the voltage on the BMV is 12.63V, the BMS is reporting 13.1V but cell 4 drops drastically when a load is drawn (ie 11A when the water pump goes) other cells were 3.3V but 4 went...
  • Post in thread: Spare cell considerations in DIY LiFePo4 packs

    I am looking to construct a 300Ah battery pack for our sailboat house system - For battery box size considerations I think 8 cells is the limit at this time, unless I build a new box. I am still dubious on the number of cycles these cells will produce and what the failure rate of individual...
  • Post in thread: Just Place new Order on Alibaba- 280AH x 8 for 1260.00 USD Delivered, Grade A to Canada

    Fascinating. I checked out the posting for the EVE 280AH cells with Donguon Billion ... and got a quote for shipping to Ontario Canada for $418USD. I didn't realize they post your inquiry for others to quote on but I now have quotes from many other companies but I don't think i got one from...
  • Post in thread: EVE 280Ah Lifepo4

    What charger or method are you using to test cycle? I've ordered the capacity tester discussed on this forum but haven't picked a charging set up. options are variable DC power supply? Using a ISDT active balancer would take too long. My bank will end up in my boat which has a shorepower...
  • Post in thread: LiFePO4 Voltage Chart?

    I have had a bit more time to observe. I believe the fluctuating voltage is due to the BMS cutting out due to a over Voltage on one cell. I've turned off charging for the time being and the cell voltages have settled into a tight range. I will have to take the pack apart to retest for capacity...
  • Post in thread: Pre-Announcing XUBA September promotion

    right now i am using plywood and threaded rod to compress. I wouldn't mind something a little cleaner looking that fully encloses the cells. The posts that are not used for battery terminals are exposed but protected from shorts with rubber and electrical tape. Even within a Group 27 battery...
  • Post in thread: Dual chemistry Sailboat - Charging configuration

    Looking for opinions - Current Config: AGM start, AGM House Both combined through Isolator to Alternator; Individual wiring from Shore power charging (40A), set to AGM profile Proposed: AGM Start, LFP (280AH) House Alternator to charge Start only Start wired to Orion TR DC to DC Charger to...
  • Post in thread: LiFePO4 Voltage Chart?

    I turned on the ac charger this morning to try to fully charge the battery. Now an odd occurence: the Voltage and the amps from the 40A charger fluctuate on the BMV app display ( 13-23A and 13.98 to 14.4V. The charge setting is 14.4V. I dont use the ac charger often as the Solar usually gets us...
  • Post in thread: Benchtop Power Supply for under $100.

    I just started using a 15V 40 amp PS from circuit specialists. My observations: the voltage display is only to 1 decimal place so I can't fine tune the V. The device required a bit of fiddling - I am only using it at <20A right now to be on the safer side, and top balancing 4 280Ah cells that...
  • Post in thread: Finally found a LiFePO4 BMS with Low-temp Charging Protection

    For the multiple 10AWG wires coming out to the Battery ground and the negative bus, do you put individual ring terminals on each wire, then stack them in the stud or do you create a single terminal?
  • Post in thread: Canadian buyer hoping I don't get dinged by Customs import duties shipping from China

    Keep in mind that Canada also has CETA (European trade agreement) which got rid of a lot of tariffs on other things (like boat parts). I do worry about the cycle life of these chinese cells - as the math on Lithium only works if you can get the Depth of Discharge AND the cycle life gain over...
  • Post in thread: My diy bank -balancing

    I returned to my boat after being away for a week or two and the 12v system cut out - when I checked the BMV it read 12.5V but SOC was in the 90% range (AH) the LiFePO4 bank is about 5 years old as is the 220W of solar so something is starting to fail. Checked the BMS and see that the cells...
  • Post in thread: Replacement JBD Temperature Sensor

    My temperature sensor was damaged and now works intermittantly. I understand it is an NTC 10k Thermistor and the connector is a JST GH 1.25mm pitch connector. I am having a very tough time locating a replacement (either on Aliexpress - to arrive in Jul) or the components to reassemble an...
  • Post in thread: LiFePO4 at dock

    Left for maybe a week at a time likely. I have the solar but have not connected/installed yet. Need to take some deep breaths before drilling through my deck to run the cables. But even with the solar - would I want the batteries topped all the time or set it to get it to say 60-70% then...
  • Post in thread: JBD BMS troubleshooting

    Aha! The temp probe wire was frayed and almost pulled out of the plug... are these available generally (like a robotics/electronics store) or should I try to repair it?
  • Post in thread: 280ah Battery Top and Bottom Support Design.

    If the aluminum cells do not need compression (and assuming you are keeping the cells from moving) would adding these top and bottom supports be redundant? I have limited height to work with so every mm is precious...
  • Post in thread: charging lithium batteries with high amp marine alternator

    Sorry. I should have flagged that I was adding my question to the existing conversation than starting a new thread. @mods if that is preferable I can do that.
  • Post in thread: LiFePO4 Voltage Chart?

    Tbh ive never observed how this charger worked in the past. I suspected it killed my AGM batteries but coild not prove it. Now that the battery is reaching the top i am more concerned to see the Voltage range up to 15v. Im not so certain about this charger now. (But i don’t use the AC charger...
  • Post in thread: Alternator charging with Xantrex "Ideal Regulator Output Module"

    With regard to the B2B chargers, do they also limit the current from the alternator - if the B2B is a 30A charger would it limit the draw from my 120A charger alternator to a maximum of 30A? Edit I should clarify my question...
  • Post in thread: LiFePO4 Voltage Chart?

    The charge profile is set to LFP (14.4V) but i have been suspicious of this charger (cristec 40A) i think i will be looking to swap out for a victron charger inverter next season/over the winter. I will also check the connectors to ensure loose connections are the cause for fluctuating voltage...
  • Post in thread: MC4 Connectors exposed to moisture - Degraded Panel output

    Hi - I have a sailboat that is hauled out for the winter and the solar panels are disconnected and stored. I realize the solar wire (not plugged) has exposed the contacts to corrosion. Is there a way to test for corrosion to see if this is why the panel (sunpower semiflexible 110W - 4 years...
  • Post in thread: EVE 280Ah Lifepo4

    That's impressive! When you wire the cell monitor (does it do any active balancing?) Are there leads from each cell's positive to each of the BMS AND the cell monitor or can the BMS and cell monitor share the balance leads somehow? Looks amazing for group 31 footprint -- may need a bit more...
  • Post in thread: 150/160W Eco-Worthy semi-flexible solar panels

    Thanks for the reply. Reason for semiflexible is they will be mounted on a canvas Bimini (think sun cover) and in cAnada only for about 5 months out of the year. I hear you on the longevity. These 150W panels are the same price as 100W SunPower panels so I thought I'd try to get more capacity...
  • Post in thread: BMS vs Smart Battery Protect

    I think I understand the purposes of each (BMS - Low voltage disconnect would disconnect if a cell voltage drops below a certain value) and Victron's Smart Battery Protect would disconnect the loads (no inverted in my setup) if the battery voltage drops below a threshold. Would the SBP and BMS...
  • Post in thread: Solar Panel Isolation / Breaker / Switch

    Panel voltages are close to the rated value of the Blue Seas 285 breaker - each panel (Sunpower 110W) is rated at 18.8V Vmpp and 22.8 Voc. If i wire them in series, the voltage could exceed the maximum rating for a 45V BSS 285 breaker but be well under the current rating. If I wire the panels...
  • Post in thread: Ring connectors for BMS balance cable

    I can't seem to find ring connectors that fit the gauge of wire (24AWG) that came with my BMS (the JBDXXXX) the Ancor connectors only work to 22 AWG - what do people use for connecting their wires to their battery terminals? I tried a robotics and maker shop and they did not have anything like...
  • Post in thread: Ring connectors for BMS balance cable

    Thanks @JoeHam! I was wondering if i should use solder to bulk up the end connection. Your solution is a bit easier.
  • Post in thread: 180W Battery tester will not draw current

    i don't think I received two cables - the only other was a usb cable. The cables I am using are about AWG 10 or 12 and have alligator clips. I could make some new cables (the ones supplied are ridiculously short).
  • Post in thread: Making a Marine 200AH 12v system

    I would second what luthj said. I picked up 4 280Ah cells (see the massively long thread in the battery forum). Together with BMS they occupy the same space as a group 27 battery. I would go with those cells unless you already have the 100ah cells. When I did the calculations those eve cells...
  • Post in thread: charging lithium batteries with high amp marine alternator

    If you have a recent model Yanmar, Balmar makes a retrofit kit that add's smart regulation capability to the stock valeo alternator. As you stated, it's not cheap - and would require the 614 (or other) regulator to be added.
  • Post in thread: EVE 280Ah Lifepo4

    Did you also order from Billion Electronic Technology on Alibaba? I am getting a quote for shipping - though I don't know what to make - they claim these are Grade A cells...
  • Post in thread: Adding additional LFP batteries at a later date

    I have had a call with them. Their products look really good and highly engineered. Their pricing reflects their efforts. If I was living aboard and off the dock, it might be worth the investment.
  • Post in thread: Just Place new Order on Alibaba- 280AH x 8 for 1260.00 USD Delivered, Grade A to Canada

    I think I can only laugh about this now because the rage inside me is too much. Yesterday I got notification from UPS that my package was set to be delivered [today]. I thought I would avoid the possibility of porch theft and chose their option to pick it up at their depot. I get a...
  • Post in thread: 150/160W Eco-Worthy semi-flexible solar panels

    Does anyone have experience with these panels? Amazon seems to have the best deal for these with shipping built in but wondering how reliable these panels are for the cost. Would I be better off picking up two 100W semi flexibles with more of a warranty for about the same price?
  • Post in thread: EVE 280Ah Lifepo4

    It is very tempting, even with $418USD shipping to Canada. I am leery of @Maast's post above regarding receiving cells without terminals or post holes. I definitely don't feel comfortable drilling into a battery!
  • Post in thread: JBD BMS troubleshooting

    I have an odd situation with my JBD BMS (I think this is the cause). The BMS seems to activate when I connect the cell monitoring harness (I measure 13.5V between the battery terminals, and at the B- and the C-. But when I connect the battery to the circuit, I do not get any voltage or...
  • Post in thread: Replacement JBD Temperature Sensor

    I ordered a JST 1.25mm GH connector as advised in another thread and unfortunately it still wasn't the right connector (my temperature probe wires got caught and pulled out of the connector while getting shredded. The connector I am looking for is on the left and a better image of it is below...
  • Post in thread: Alternator charging with Xantrex "Ideal Regulator Output Module"

    So after a bunch of question asking and reading, i'm leaning to a B2B charger between the Alternator (and Shore Charger) to the LFP bank. My alternator has a dumb regulator on it that cuts current and voltage after a certain amount of time. I will evaluate this season whether I spend more $$$...
  • Post in thread: Replacing House Bank

    that battery box is fantastic. Did you custom fabricate it? (looks like metal from here). What kind of connectors are those that connect the BMSes to the battery negative?
  • Post in thread: Separate MPPT and DC/DC chargers

    Found this thread searching for a discussion on the Renogy MPPT DC to DC Charger. Someone correct me if I am wrong but I believe if both devices are set to charge at the same voltage, then it will only push however much current the battery can receive - if the battery is deeply discharged, then...
  • Post in thread: Can you have too much battery?

    After 1 season with a 280Ah I want to capacity test the cells so that I can do exactly that. Program the charging system to charge only to 80% SOC if my usage can be easily accommodated by the day's solar charging.
  • Post in thread: Winterizing a Boat - Solar options

    Thanks. I have the semiflexible panels on my Bimini (which I take down for the winter) I'm looking to mount a smallish rigid panel (used to be 50w panels but only see 100W now)
  • Post in thread: Chargery BMS now with Low Temp Cutoff

    How long does delivery take (recently) to Canada? I had ordered the BMS recommended by Will back on Jan 30 but it still hasn't shipped on Aliexpress. At this point can you just cancel the order and I'd order the chargery but if shipping is going to take 2 months, I may look elsewhere.
  • Post in thread: LiFePO4 Voltage Chart?

    Thanks. The solar charge controller has the 14.2V absorption and 13.5V float. I noticed right now (nighttime) with an 11A draw (no charging right now) the bmv is showing a 12.79V with a 96% SOC. So perhaps the Voltage under load will be lower than the actual true SOC. The consumed amps since the...
  • Post in thread: Aliexpress shipping update

    I am super frustrated. Ordered the DYKB at the beginning of Feb through the links provided here (when I ordered my cells) I got the notification that the payment was accepted and order shipped from China on Feb 9. It allegedly departed China on March 26 and arrived in my country (Canada) on...
  • Post in thread: 280ah Battery Top and Bottom Support Design.

    I do not have a 3d printer (yet) but love these designs. Unfortunately, my compartment requires a lower profile (height) design. @Heap64 How big of a printer are you using to print your battery supports? I love this idea and it might push me to buy a printer!
  • Post in thread: BMS vs Smart Battery Protect

    Thanks Justin. I think on my boat I have a single distribution to DC loads so there is no separation of critical and non-critical loads. I'll have to trace whether my bilge pump is wired direct but I doubt it.
  • Post in thread: Solar Panel Isolation / Breaker / Switch

    What are people using for panel isolation (between charge controller and your panels) I've seed the DIN rail mounted breakers but then I'd have to get an enclosure and it starts to take up space in my limited battery / electrical garage on my sailboat. The wiring will come down, through a deck...
  • Post in thread: Breaker mounting

    Was this the wrong breaker to purchase? I was trying to stick with marine brands and the rated voltage and amperage is OK. I see the other post on polarity of double pole breakers - so should I have bought one of those?
  • Post in thread: LiFePo4 case 16pcs prismatic

    I'm still seeing ~$300 shipping. I am located in Canada so that might be the difference. Where are you located?
  • Post in thread: Breaker mounting

    I picked up a blue seas 7238 30A breaker for my PV shutoff and also picked up a “small” breaker box off aliexpress but now realize the breaker cannot be mounted on a din rail. What do people use?
  • Post in thread: BatteryGo balance meter link?

    I saw the T8 yesterday but noted reviews were from 2017 so it's a couple of years old. Also noted that to get the full wattage at the 20A or 30A it is rated for you would probably need a higher voltage power supply. (Sigh). Just trying to not clutter my place with useless (or seldom used)...
  • Post in thread: Fitting 200ah of LFP into an 'L' shaped moulded boat battery box

    I have a similar desire, but my understanding is that at the junction, your wire connectors would have a different resistance than the busbars and therefore your power draw will not be consistent across all the cells. I've thought about the alternative of 2 1P4S batteries wired in parrallel but...
  • Post in thread: Cell expansion

    I finally got around to ordering a proper case for my 4x 280AH cells. They did not seem to have expanded however when i fit them into the battery case kit, i can see there has been expansion. (note the bottom fits into the case bottom, however the top will not fit due to the cell expansion. Is...
  • Post in thread: Just Place new Order on Alibaba- 280AH x 8 for 1260.00 USD Delivered, Grade A to Canada

    That was my experience as well. Shipping (to Canada) is as expensive as the cells. Ordering 8 vs 4 cells didn't really help lower your per cell cost. I factored that into my decision. If these work out, I will order more but at this point I'm not prepared to build a 2p4s pack with these...
  • Post in thread: ABYC standards

    How are people complying with the requirement to have a visible or audible alarm before the LiFePO4 disconnects? The bms has it programmed as software but how are physical alarms being triggered or activated?
  • Post in thread: Battery Terminals - Studs, bolt sizing and ring terminals

    So when people build their banks with large LFP cells which come with these relatively small M4 terminal screws, what is the thinking on terminals? for instance my existing battery cables (to charger, breaker, load) are 2 gauge or some even bigger and have the clamp terminals on them. Am I to...
  • Post in thread: Fuse/Circuit breaker Sizing and placement.

    Are there any rules of thumb on using circuit breakers over fuses- it it a $ for convenience thing? (My consideration is for charging sources to a battery)
  • Post in thread: Thoughts on BMS, Batteryprotect, Shunt based Battery monitor...

    I have a Victron BMV 712 battery monitor and really like it - TBH if i redid things i would just but the smart shunt they have now as I rarely use the BMV head to check my batteries. But thinking about LFP, I would be adding a BMS which operates somewhat like shunt that can shut things off. as...
  • Post in thread: Solar Panel Prices (semi-flexible)

    Is it just me (or that I am in Canada) but have Semi-flexible panel prices jumped substantially since the fall of 2019? I am looking at a 100W Sunpower semi-flexible and at our Boat Show, they are asking for $299CAD a panel ($229USD) - The off-brands (renogy, Eco-worthy seem to have increased...
  • Post in thread: Wiring connectors (mc4)

    So I wired my boat with the solar wire. I noted that one wire had a positive (male) connector and the other a female connector. I assumed that meant it was the positive wire so I put the disconnect on that wire. I now realize the positive wire coming off the panel is also a male connector. Is...
  • Post in thread: BK Precision 1692 3-15V, 40A DC Power Supply

    Someone else had posted a link to Circuit Specialists - The two power supplies I am considering are these: 15V 40A 15V 60A I am inclined to go for the 40A (though the amount of time I'll be waiting may be worth the extra $90) but do you think the resolution (0.1V is too broad to be usable for...
  • Post in thread: LiFePO4 Voltage Chart?

    An I ask a potentially stupid question - my BMV712 is showing a battery voltage of 13.20V but the SOC is 90%. According to some of the charts here that would should be closer to a 70% SOC. It's shunt based so all the loads and charge sources are going through the BMV. Am I missing something?
  • Post in thread: JBD BMS JST plug type

    I found the jbd plugs very frustrating. I broke the ntc sensor and tried to find a replacement. I ordered multiples but none fit the BMS.
  • Post in thread: 180W Battery tester will not draw current

    Thank you! I found it elsewhere as well. https://forums.sailboatowners.com/threads/180w-constant-current-electronic-load-200v-20a-battery-tester-discharge-capacity.1249926037/#lg=attachment184183&slide=0 Press the button while powering it up. Then you can set the various parameters press and...
  • Post in thread: Breaker mounting

    Yeah. They are the SunPower semi flexible 110w panels. Each panel has a VoC of 22.8V so even if wired in series (not certain yet what works best) it should be ok for that breaker but darn it I didn't know they weren't mountable.
  • Post in thread: Winterizing a Boat - Solar options

    So if I hook up the fans to the LOAD output of my MPPT, the Solar panels would run the fans during the day and shut of once the sun goes away? Assuming everything is fused appropriately am I missing something? (The reason for the fans is to keep air moving to avoid mold...)
  • Post in thread: Finally found a LiFePO4 BMS with Low-temp Charging Protection

    I tried searching for this but will admit i did not read the 50 pages here. Is there a way to configure this BMS without the Bluetooth adaptor? Also is there a link to a manual that lays out the wiring/pins? Thank you.
  • Post in thread: DYKB smart BMS

    Tried to jump it today however the BMS is still not functioning. Is there any other test to determine if my module is dead (It was shipped to me from China in a bubblewrap envelope - not impressed and won't be ordering that again...
  • Post in thread: My diy bank -balancing

    Is this a setting in the BMS? Does this mean it only balances when it is not charging but discharging?
  • Post in thread: Charge Voltage

    Forgive me if this is too much of a noob question but I had a question about charging these diy lithium batteries. I plan on having a solar with separate MPPT charge controller but will also have the bank hooked up to a shore power 40A charger on my boat. Now the charger has a setting for...
  • Post in thread: BatteryGo balance meter link?

    I've been trying figure out what I need for my first DIY LiFePO4 battery build. In Will's videos, he uses what looks like the ISDT BG-8S to bottom balance his battery. If I pick up the Q8, could it function for both the balancing and the charging function? (at 20A it would take some time to...
  • Post in thread: BatteryGo balance meter link?

    Here is another option: Hota H6 Pro Has built-in AC (but only 200W on AC, 700W on DC). 2A balancing. Charge Current up to 26A.
  • Post in thread: Cell expansion

    Cells measure at 3.22V which i believe is close to 50% SOC) but when I try to put them on a small capacity tester under a small load, the Cell Voltage drops momentarily below my low threshold of 2.6V (so the capacity tester shuts off). The cells were bound together with tape but I guess it was...
  • Post in thread: Breaker mounting

    I suppose i should have bought the blue seas box - but at $52CAD for a plastic box I thought I could find a cheaper alternative. Will have to put something together as the box I have is too open to enclose the breaker.
  • Post in thread: Cell expansion

    So are these cells bloated beyond a safe margin?
  • Post in thread: LiFePo4 case 16pcs prismatic

    Those stainless steel cases look nice, but shipping is almost as much as the case for me and would cost about 75% of what I want to spend on cells themselves! I guess I'll have to settle for a DIY solution.
  • Post in thread: Wiring connectors (mc4)

    Thanks. I bit the bullet and rewired down below. I wasn't sure if the connectors had a common crimp that it screws on to. Live and learn!
  • Post in thread: My diy bank -balancing

  • Post in thread: DYKB smart BMS

    I am interested in this as well. In Will's video he had to short the ground on the battery to the ground on the other side of the BMS to turn it on before plugging in the balance cables. The BMS in that video was a different model though. I did not do that last time I was trying to set up the...
  • Post in thread: Charge Voltage

    Thanks! I note that the charger also floats at 13.8V which is allowable/recommended in the video. Perhaps I can figure out how to use a relay to turn on the shorepower charger when plugged in AND the SOC gets below a certain threshold.
  • Post in thread: Pre-Announcing XUBA September promotion

    does Xuba have any cases for 4S or is 8S the smallest they have?
  • Post in thread: LiFePO4 at dock

    Wondering for the sailors who have installed LiFePO4 housebanks on their boats. Do you leave your boat plugged into shorepower and the charger on (has float and absorbtion profiles but our batteries are pretty much back to full by the time we return to dock With LA I always left the boat on...
  • Post in thread: Is this a good/safe purchase?

    If I am interested in A stock, is there any way of verifying if the ad is for A stock? (When I search the term very few show up, the images (never that reliable) don't always show cells with the 2d bar code.
  • Post in thread: Finally got my BMS (Will's recommendation 4S...) from China. However, they forgot to include the blue tooth.

    Is that BMS still what people would recommend for a simple house bank? I didn't receive the BT mode either and am leery of waiting on uncertain delivery. I was pretty disappointed when I received the BMS. Thrown into a padded envelope, no documentation balance leads look sloppily made with glue...
  • Post in thread: IWISS Lug crimper review

    agreed, I later re-did some crimps with a slight oversize to avoid the wings. Not professional looking but also wasn't in price.
  • Post in thread: Good Battery Capacity Tester

    I picked one of the 180W units up off Aliexpress - Not sure due to covid and other distractions I never got around to my build - i just pulled it out of the box and it looks like it's DOA - doesn't turn on (with the AC adapter). I may try to fiddle with it but does anyone have recos for a...
  • Post in thread: Cell expansion

    It's one of those 185W alliexpress capacity testers. It was set at about 1-3A so I was surprised the measured cell voltage dropped as much. Under a very small load the cell voltage approached 2.77V (when no load, it went back to 3.22V). My next step will be to put proper ring terminals on the...
  • Post in thread: High Voltage Alarm off BMV (and differential Voltage readings)

    Hello. I have a Victron BMV 712 measuring the usage and charging off my 4 cell 280AH LiFePO4 battery. For the past 24 hours, I have been getting a high voltage warning every time I go into the BMV app (the high voltage alarm is set for 15V but the BMV is only reporting 13.68V; the Solar is...

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