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I have a 16s 2P battery setup 2-16cell packs of 260 ah with a Daly 250 amp BMS on each parallel pack, I am a novice at solar power so learning as I go so there are others can help with technical information but will tell you both the 250 bms work perfect keeping cells balanced, I was going to...

I suggest 250 amp BMS if you use Daly

Sorry these panels are SOLD

Thank you Panels are SOLD

Sorry, don't think there is a way YET. Maybe after the border opens

I have 2 maybe 3 Q- cell, 430w duo panels left over from my order, they are brand new and available for pick up in the Vancouver lower mainland. I am asking exactly what I paid by buying a larger amount. $285.00 Cnd.

Thanks snoobler, for confirming my calculations, I will post a picture of the total system when complete Thanks again

Thank you for you comment Vmp is 41.39v and I see a mistake on my post Panel VOC =49.09 x 4 in series = 196.36, Voltage drop with AWG 10 = 2.24V (not AWG 19) everything still work?

My DIY solar system will consist of - 4strings of 4- 425watt Panels in series. Each string will be wired to the 2 ports on the 2 MPP Solar LV 6548. Each Positive line will have a 20 amp Breaker and will use 10 AWG PV wire. The wire run to the Panels will be 50-70 feet. This is my Idea any...

I am in Canada. Thank you for taking an interest to help me understand this issue, the help I have been given on this form has been un Parallel (no pun intended) thanks again

Ok I am just trying to understand if what i have wired from my 60 amp two pole breaker from the grid is referred to as split Phase(see attached as wired). The LV6548 refers it as One inverter in each Phase, but the Manual page (single page attached) asked for Split 120 or 180 phase diff

Sorry sent the wrong attachments, Give me a moment FilterGuy and I wiil find the right ones

I have 2- mpp Solar Lv6548 wired up in what I think is called Split Phase and think that it is 180 degrees. This is a first build and learning from everyone on this site has been great but being new to solar I am not picking up on all the terms so if anybody can help me with what I have wired to...

Yes I got it 200 amp ANL Fuse, Is it really needed after the bus bar or just good practice, I intend to add it either way

I can't wait to work on solar panel design, want to get batteries and inverter all set up and when the weather is good in the spring start panels, i checked with our local city and they want an engineer to sign of on roof loading and that will go into the engineer in April. I little concerned...

Thank you, I will change my anl fuse to 200 amp, I checked the voltage drop of 2/0 battery cable i have and the table shows .5v drop in 3 meters and shows amperage at 195a. My cable is battery cable 2/0 60v 105 degrees, I hope this will work

Thank you for your input, I agree with you on the anl fuse but worry about the LV 6548 getting fried. It is a little scary on my fist build. my thought was to go one size less and if it becomes a problem step up to a 200 amp. I ant believe how nieve I was even Mr Sandals pointed me the help...

I am building a 48v 272ah Lishen battery pack with mpp solar Lv6548 in two Phases. Please review my hand made simple schematic and any comments would be greatly appreciated. The 1st phase is one LV 6548 and 120 volt to critical load subpanel. It will have a 16s 48v 272ah battery storage. 2nd...

I was trying to top balance and I bought a small bench top charger as seen by Will's video but with 16 cells 272 ah in Parallel I wasn't getting anywhere so tried different things over 8 days until got Positive and negative mixed up and well that charger sure gave off a cloud of smoke. So have...

These are Lishen cells 272ah from Shenzhen Xuba electronics in China, one thing i noticed today is the QC codes have no numbers on them a little concerning but will do a capacity test and post results all else looked good, my seller was Pina

Thank You for taking the time to review my system wire, fuse, and BMS, I will make my BMS 250 amp instead of 200 was thinking of that after reading comments about double max current draw (154 amp) and with your advice make sure it is 250 continuous current rated. I have started with one MppSolar...

Thanks Steve I haven't got a charger yet and 2 months before final wires, fuse and BMS so I will eventually top balance and do capacity testing. They are Compressed.

Ordered studs from aliexpress two sizes 25 and 30mm but turns out the 25mm were plenty long enough, I think they were 50 for $9

Started to place my Lishen 272a cells in my homemade shelving when I noticed the top edge of the cell had a small sliver of metal showing. Was about to set cells on the shelf with carboard between but decide to wrap top and bottom with 3" plastic tape. went good and i think it ended better than...

Attachments as above. Expected current on welding wire as per LV6548 = 154amps Type T fuse =154*1.25 = 192amps, use 200 amp fuse Welding wire size = 200 amp fuse x 1.25 = 250amps, use 2/0 welding wire BMS continuous current as per LV6548=154amps x 1.25 =192 amps, use 200 amp BMS Please review...

Second Kick at at the cat, Please Review Attachments as above. Expected current on welding wire as per LV6548 = 154amps Type T fuse =154*1.25 = 192amps, use 200 amp fuse Welding wire size = 200 amp fuse x 1.25 = 250amps, use 2/0 welding wire BMS continuous current as per LV6548=154amps x...

As I will start with one LV6548 I have changed my Energy Audit slightly to work better. Solar panels will stay the same but not until spring set up as i figure it: -Positive 2/0 wire from cells, this is the manual recommendation - T type fuse 200 amp, again manual- emergency 300 amp shut off...

Today I received 16 Lishen cells from Xuba ordered Dec 18 and arrived Feb3, all boxes were in perfect condition and cells (2 to a Box) are also in perfect visual condition. I unpacked and set up cells in Parallel to start to balance Voltage ranged from 3.285 to 3.290 pretty good. I installed...

Thank you I finally have the concept of Amp hours but just slow to react If you have a chance I am trying to calculate my main wire and fuse, BMS sizes, from my energy audit my continuous current from Battery is 156.9 and my mpp solar 6548 has a maximum current draw of 6500/48v = 135.42 amps I...

Thank you for your review it is much appreciated, do you think a fuse and BMS on each battery pack of 16 cells is the way to go and are they sized right, thanks

My first post was on Dec 20/2020 and I see now I had no idea, Thanks to Mr. Sandels and six weeks of reading posts, energy audit, purchase of a current meter I feel I have a small grip on things Please see system size calculations below My system will consist of: - 60 amp Critical electrical...

Thank you so much mister Sandals, now I have a direction and will do the audit and continue from there

Thank you, so what do I need to know to calculate the size of my bms and inverter, I would like to have a battery back up with future solar panels.

I will have a 16s 48 volt 280amp battery pack, this means I think I need a 300amp BMS, can I use a 600amp bms or must it be closer to the battery pack size. If it is OK to use any amp over min what other than cost are the cons

Thank you for your reply, I have a current meter on each hot wires (2meters) in the subpanel which has a transfer switch for emergency generator power. The meters show consistent total 24 hrs reading of apptox 15kwh, if all loads came on at one time I don't think it would be over 5kw peak...