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what if the SOC is 10% and you connect the solar panels? You get full sun power and the battery will charge with the remaining, if this is true still is good enough, you can avoid the micro 5% cycles, just need to baby sit the unit when the SOC is approaching 95% :D

Currently I'm looking at Victron Energy as brand, 3 models: https://www.victronenergy.com/chargers/blue-smart-ip22-charger https://www.victronenergy.com/chargers/blue-smart-ip67-charger-waterproof https://www.victronenergy.com/chargers/blue-smart-ip65-charger Application is for my fishing...

I wanted to have this thread generic to help others too, so considering the general approach, what is the best charger considering the price/performance/quality ratio? :) Maybe a dedicated top5 topic would be better...

Hello guys, I have DOKIO suitcase /folding 100W (2x50W) panel that I want to use to charge my Ecoflow Delta 1300. I would like to move the panel around my house while keeping the Ecoflow inside therefore I am looking for longer cables. Now the questions: 1. why should I use solar cables? how...

Hello, I have a small off-grid location ready to accept AC whenever it'll come. For now I am powering it from one of the 220V AC outlets by using EcoFlow Delta 1300 but I want to switch to a mobile solar system via inverter, MPPT and 300-600W PV power. Here is a basic drawing of what I have...

that was my first attempt but it didn't work, I didn't try my limits with it though...

I know, that was the way my next door neighbor has, it seems his electrician was more experienced than mine. My electrician asked me to buy 10ft of 10AWG while there was more than enough 4AWG grounding wire just to be taken inside the panel. Anyway, I'll look for that split bolt referred above.

Hi, I "think" I need PV disconnect between panels and MPPT and perhaps one between MPPT and my battery (or between MMPT fuse and battery). Can you help with some options? The MPPT is Victron Smartsolar 150/45, my batteries are 12V LFP (230Ah, 100Ah). thank you

I have Delta 1300 to power my house and I use LFP 100Ah and 80Ah to charge my Delta 1300 with the car plug - xt60 cable. Delta 1300 charging is limited to 90-100W this way. I noticed that the fans are working harder compared to when using Delta 1300 alone while my current consumption is about...

Do I need same length cables for single battery (eg. 12V 230Ah LiTime LFP) to inverter?

I have 3ft extension cord of 3 x 14AWG wires from the inverter to my 220V outlet, that will power the house. What I can do is to make that cable shorter and use the tag end of the 14AWG ground wire and connect it with another 14AWG wire that will bond the inverter and the MPPT, eventually the...

hello guys, I won't open a new thread about same issue. So, are you saying that the fan in order to work it must consume less power than the panel (100W in this case) would produce? See picture:

assuming a circuit breaker is better economical option than using a fuse, which one would fit my 150/45 MMPT Smartsolar Victron?

Because when I have asked Liontron support about such operation, they told me the batteries shall have same BMS parameters. Here my question and their answer: My question: Their answer: I asked then If I can put in parallel Liontron 40Ah with Liontron 80Ah, below their answer: So, about my...

Hi, While I'm still in design/preparation phase I didn't cut the wires and fixed everything. I want to use some light weight metal shelf for my 12V system, the battery will stay in front of the shelf (where the bottle is). I have Victron 150/45, 300A class T fuse / holder, 6000W inverter (rated...

this battery it's like a Lego system, very accessible, you need only a screwdriver, however I don't posses the knowledge yet to do any repair, I'll see in the future how bad it'll degrade. I saw others complaining about the same capacity issue like mine for their bigger batteries.

ok, so I should use a fuse and to not rely on BMS. As the fuse is supposed to protect the wire, why do you go for class T fuse that can sustain (as I have read) 10k-20k amps? Why not picking a fuse that is matching the max surge (+ margin) you have from your appliances?

I will replace the battery once it's empty with my next ones, Liontron 80Ah, Victron 100Ah (prefilled before going to my off-grid location) Having a large inverter but consumption like 300-400W (except when I use the vacuum cleaner which will mean +2600W surge and +1000W continuous use) will...

Hi, I need for my fishfinder a 20-24Ah LiFePo4 rated as IP65 or higher, do you have any suggestion about the brand? Do you trust any seller/brand from Aliexpress? thanks

Hello guys, I found this forum after watching several youtube videos while I realized it'll take days to find the right info I am looking for. I'm an angler, I own a Torqeedo Travel electric motor equipped with a Li-ion battery of 915Wh (29.6V x 31Ah + some protection electronics inside). The...

that's even a better idea :D

no, I have just the inverter and its provided cables, 2 red and 2 black wires AWG 6 or 4, the seller told me I can connect them all to the battery, I don't know if you can scale up to fit the required amps resistance by using multiple cable wires :D About the risk to blow the fuse, it should be...

I have no clue how to use these NH fuse so I'll go for that class T from Blue Sea System as I can buy anything from US also :)

so it means, the battery won't be charged at all but the current coming out of the panels via PWM/MPPT will be used by the fan/consumer together with the needed current from the battery by discharging it? All this is controlled by the PWM/MPPT or by the BMS?

thanks, I've read that Pike Industries is rated ok, I'll look into it

the fishfinder it's consuming around 50W (so 50W/12V amps). I see Victron Energy has 20Ah IP43 rated LFP battery, I already have 40Ah Liontron IP65, looking for smaller battery (IP65+) but bigger than 12Ah :)

Putting aside the IP rating where Liontron seems better than Mastervolt that is better than Victron, what would you recommend?

yes, customer support gave me these numbers "400W 10-65V DC 10A max." So, as general question to come back on this, in what conditions fuses are needed for solar panels?

About BMS, "Max. Discharge Current 5 Seconds：600A" This breaker is OK? https://www.amazon.com/MidNite-Solar-MNEDC-60-Panel-Breaker/dp/B07C5Y96VM So, if 300A will be requested by the inverter, how to ensure it won't trip the breaker to MPPT?

it comes with DIN rail support or you have bought it separately? Very likely I'll go for this switch.

Mine is 3y old, 915Wh, but with about 10cycles so I hope it'll last a lot, did you find a solution? If I remember well I've seen recently some guy on eBay that is selling a solar system that fits Torqeedo battery demand and he was mentioning he repairs Torqeedo batteries too, you might drop him...

I will go for Ecoflow Delta 1300 due to its fast charging and its EU outlets option. Should I buy the Ecoflow panels or I find better options in the 100W range?

here it is

So the open questions are linked to busbar usage, what 300A busbar should I use and maybe a breaker or on-off switch. Once my battery is empty I want to switch it with my next ones, 100Ah Victron, 80Ah Liontron. My goal is to stay off-grid about a week regular consumption is 200-400W except when...

Hello guys, As common the question would look, the more complicate it is when you have to choose the right wall charger. Very likely there should be a rule of thumb how much current you should select to charge your battery based on its specs but I don't know if you have to go close to its max...

In this case, can you tell the applicability of the LOAD slots from a PWM instead of connecting the load directly to the battery?

After many "design" changes, I ended up with this one. Not happy with my negative inverter bolt, I think I've tighten one too strong that the screw started perhaps to move as I can't put more torque on the nuts. It's not loose but not perfect. Going to try it with 2000W load to see if it gets...

what can happen if the WAGO connection gets wet?

what's wrong with this setup related to placement of the battery switch? Why on negative instead of positive cable?

isolation for screws should be applied for the poles too just in case I opt to buy them in the end, right? the battery is protected for short circuit,

I have left some 14AWG and 16AWG single and multi strand insulated copper wire from my electrical installation of my house, also I have some ribbed tube that is used in such application.

From different tables I saw that for 300A I need 4/0 wire or even thicker, indeed Windy Nation ampacity chart show different figures. About their cables, is there a difference between this https://www.windynation.com/products/4-0-gauge-battery-cables and this...

so, nobody is using inline fuses for solar panels?

Does it matter? I am asking about the difference between crimp connection and WAGO. So pick an example of 18V, 6A panel (100W), with a 30ft 14AWG ordinary electrical wire (stranded or solid)

so you're using/recommending these breakers MidNite Solar MNEDC 5A~100A 150VDC/120Vac Non-Polarized Panel Mount Breakers ?

it's something I don't understand, two bolts glued on a piece of plastic (eg. the Blue Sea System fuse folder) is about $50 so, having two bolts glued or screwed on stone / tile would not be sufficient?

Hi, I have the following LiFePO4 batteries: 1 x 40Ah from Liontron 1 x 84Ah from Liontron 1 x 100Ah from Victory I want to connect them in parallel for running my stuff (mostly fridge with freezer, lights and TV) from AC (probably I'll get a pure sine wave 2000-3000W inverter). Can you tell...

I don't understand, my question is about the purpose of the LOAD connection to a PWM / MPPT instead of connecting directly to the battery, see these connection ports

In Romania I understood minimum is 10AWG, nevertheless, I see you're electrician, do you see a problem connecting these two different size conductors with a bolt, washer and nut? Can you stay on point and provide feedback on the topic if you have the knowledge? A piece of advice from me for...

hi, I have a 40Ah battery (actual value is 42.9Ah as its bluetooth app tells). Battery specification tells I can use .5C as recommended max charging value but it supports 1C too. I have a 15A Victron charger, is it safe for the battery lifespan to use it? thanks

The electrical outlet where I feed my solar power has grounding wire that goes to my panel which continues with grounding Earth wire linked with 3 rods as shown in the picture. So, you suggest that I should open the outlet, and connect L, N from inverter and the bonding wire between inverter...

Hi, I have 12V 6000W inverter and 3x 12V LiFePO4 different capacity / brand batteries with their max surge current is 100A or 150A for some seconds (based on their specification). I have 1000W vacuum cleaner that seems it is using about 2200-2600W initial starting spike therefore none of my...

When I look how simple these batteries are built, the tendency is to build one, the main issues are the quality of the components that is questionable, my lack of tools and experience in electrical area. I would love a compact solution like this...

I think series connection leads to increase of voltage while parallel connection keeps the voltage but raises amperage

Hi, I have this 100W solar panel that I am thinking to extend with 3 more of same characteristics: Model:DSP-100M Material:Monocrystalline silicon Maximum Power(Pmax): 100W Maximum Power Voltage(Vmp):18.00V Maximum Power Current (Imp):5.56A Open-Circuit Voltage (Voc): 20.5V Short-Circuit...

got more answers from https://www.victronenergy.com/upload/documents/The_Wiring_Unlimited_book/43562-Wiring_Unlimited-pdf-en.pdf but my questions above remain valid for diversity of answers

right, I always mix the series and parallel connections and their consequence on volts and amps so, based on 5.56A rated amperage you think I can go with 2 in parallel and the overall amperage won't reach the theoretical 5.56x2 amps?

I can find Victron Mega fuse rated as 300A / 32V, this 32V what it means? does it fit my 12V system? Can you also tell what AWG I should use for the battery to inverter wires for my 3500W inverter (7000W peak)? My overall consumption is not bigger than 2800-3000W as surge (when I start my vacuum...

what does it mean for 30-60ft regular electrical wire (14AWG) connected via WAGO to my solar panel(s) ?

My battery fuse is class T 300A, I wanted the DC disconnect from Victron for my 12V LFP 230Ah but is rated as 275A. I see this one mentioned above rated as 400A: BEP Marinco Power Products Pro Installer On/Off Battery Switch Do you suggest something better than this? What options I have for...

would this work for my case where one wire is solid and not stranded? Basically it's similar idea that I had with just stacking the lug from the stranded one with the solid wire on single stud.

Hi, The design purpose is obvious but more than this, what's the purpose of a fuse holder (for class T or Mega fuse)? Can I keep the fuse suspended in air? Shall I use some tape insulation and / or glue the cable with fuse on some plastic panel instead of using a fuse holder? thanks

ok, my setup with 1 such panel works fine, what about 4 such panels, either all in series or 2 series + 2 parallel to not exceed the ampacity for 14 AWG wire?

BMS short circuit protection is not working for LiFePo4? Should I use an on-off switch for my intended setup as described in above picture?

I have to choose between 250A or 600A, still searching for a brand that is doing 300A busbar, I understand the benefit for such busbar is to avoid lugs stacking so to avoid the risk of loose connections

trying to come back to my original question, more details about the battery: about protection, my sonar's cable have fuses, my motor battery charger at 12V has built in fuse, so no worries so far. So, replacing those poles with just regular stainless steel screws should be ok?

I unpacked one 100W panel and there is a thin film on the frame. Should I remove it or its purpose is to avoid electroshocking in case of series connection with more such panels?

With cold motor I managed to see for 1s or less the 2400-2600W surge running it from my EcoFlow Delta 1300. After running it for ~10s, I tried again to take a picture of the starting power, the consumption was at around 1200W then it was more less constant at 900W. Is this normal that cold...

it's rated as 3300W continuous load, 6000W surge.

so, about the connector and its ease of use, why not a WAGO where no crimping is needed? :)

Hi, I intend to buy a LiTime 200-300Ah LiFePo4 and I have a 3500W inverter. if BMS can handle over discharge, short circuits, why do I have to use any fuse between battery and inverter? My use of this setup is for regular appliances at home, peak would by the use of my vacuum cleaner (2600W...

I found one, Blue Sea Systems 9003e, from specs should be right for my setup https://www.amazon.com/gp/product/B000MMC914/ref=ox_sc_act_title_1?smid=A33RHCC3UXN6B2&psc=1

Yes, that was my plan to run my ground wire from the plug I'll put in the inverter to connect on the screw from MPPT. The inverter does not have a screw just a sign, its grounding is linked with the case so, having a metal shelf, it'll bond with the MMPT case so with my ground wire. I have used...

too thick? anyway it was done this way by a friend of mine who did the house Earth grounding with 3 connected rods. Back to my topic, if if put a lug on that 4AWG, use a stainless steel stud for it then the solid 10AWG wire I'll loop it on that stud, put washer and nut over, would it be ok?

Hi, I want a setup for my fishing trips, I have electric motor with its own 900Wh battery, 12V freezer, mobile phones, a gopro camera, a laptop as consumers. I have 2 x 12V LiFePO4 (1 x 86Ah and 1 x 100Ah) I calculate that I consume maximum 4000Wh during my regular 5-7days trips. I do have gas...

understood, anything better in terms of price/quality ratio than this?

I made the test with 2000W load, both positive and negative bolt areas on inverter were stable at 95°F Rest of connections were cold as my thermometer couldn't read anything :D

found some answers here: https://diysolarforum.com/threads/do-i-connect-a-load-to-charge-controller-or-battery.29120/#:~:text=Connecting%20the%20load%20directly%20to,damage%20of%20the%20battery%20life.

well, I jumped into this inverter 12V/7000W (3700W continuous use) because I already had 12V / 100Ah and 12V / 80Ah LiFePo4 batteries. I know the inverter is oversized for my daily use so I was thinking to get 300A Blue Sea System Class T fuse to match my battery type as LiFePo4 and to match my...

Hello, Just in case I want to replace the fuse to my Ecoflow car charging cable, can you suggest how to reach it? See the picture:

I am using this one: Its price was about $350. My 12.8V / 80Ah LiFePO4 Liontron (100A, 150A surge) was not able to run the 1000W (2600W surge) vacuum cleaner, the BMS was cutting the discharge, not the fact that the inverter couldn't sustain it. I can share several videos with that inverter in...

hmm another issue, my wires that come from my 10A PWM to the battery are thin. If I want to use a load that draws 150A from my battery, do I have to change the wires from PWM to the battery or it's enough to use proper wires between the battery and my inverter?

In concrete I have 2 Liontron batteries that can support 100A and 150A surge and 1 Victron that can support 50A and 100A surge. Connecting these in parallel why they would trick the BMS from each to not cut the load?

not working either, if nobody experienced it, I'll contact Ecoflow for guidance

Got in the meanwhile lots of answers from ChatGPT not necessarily accurate but enough to have more clarity. Yes, my inverter is bought, still, my load is 400W-1000W (2600W surge) so if the inverter can output 3700W, do you consider that my 300A BSS T class is not enough for my setup? Can you...

I tend to believe this is the case for mine too, I hope the fuse will run for many hours, it seems my EcoFlow Delta is drawing max 100W from my auxiliary battery

Are you saying this battery won't work for using a vacuum cleaner with 2600W surge and 1000W continuous run? The Midnight breaker I shared above would be ok between my MPPT and 300A class T fuse holder?

hi, I need to make a proper connection for my house Earth grounding so my current setup is 4AWG stranded to be connected with a solid 10AWG grounding wire the goes into my electrical panel, the connection is outside my house. Currently I manually twisted the wires as temporary solution till I...

Hi, I want to buy a LiFePo4 battery but it's shipped without terminal poles (M6). Can I use regular M6 screws instead of designed terminal / poles that are sold separately? Any risk if I want to use stainless steel screws? I'll use the battery to power my boat sonar. thanks

thanks all for your replies, the battery in question is Liontron, built (or assembled) in Germany, here the specs https://liontron.com/download/english/LISMART1240LX_EN.pdf

Hi, I plan to have 2-4 panels, 200-400W output in total, my inverter is 12V / 3700W (7000W surge), one LiFePo4 12V battery (100Ah currently, going to replace it with 12V 230Ah). I'll use only AC power so no 12V consumers. I ordered 150/45 MPPT Smartsolar Victron. Some basic questions I have...

I am happy with my DOKIO 100W folded suitcase panel, they do it also in larger sizes. You will get around 80-90W out of the rated 100W panel

I have no clue about the material, they look like this What if I'll use stainless steel regular M6 screws to power my electric boat motor? The battery has built in BMS and bluetooth, the brand is Liontron

Hi, I saw the basic 12V / 400W system described here https://www.mobile-solarpower.com/the-classic-400-watt-rvs-vans-buses.html Perhaps I'll have 2 or 3 x 100W panels, however my plan to keep inverter and MMPT in the house seems to not work because I cannot do the grounding unless you tell me...

This is what I have in mind, I could use though another 6AWG cable between the ANL fuse/fuse holder and the Blue Sea Systems class T fuse holder that has 4 bolts. Now, where I should put the battery switch, on (1) or on (2) ? What should be the distance on circuit so the high current between...

hello guys, I want to fit my truck with some Dometic cooler being powered by LiFePo4 battery (setup will be stored on loadbed). As I drive also offroad and sometimes I leave my car exposed to sun during summer days, I have the folllowing fears: - is my LiFePo4 battery going to malfunction due...

My initial 12V 80Ah Liontron was seen in the beginning by the app as 84-87Ah, I was so impressed. After several cycles it started to decline in capacity. Today, after about 3 years since I have it, I had just 13 cycles (as shown in the app), my capacity is 67Ah, each cell is about 3.36-3.32V and...