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My DIY batteries are out of balance (I have top balanced using the guide in this forum before I put them in use), one cell hit 3.65v (overvoltage cutoff) while other cells are around 3.36v. during charging I did see [BLANCING] on the cell with higher voltage, but I think the bms passive...

Hi all, I am wondering if these 280/300/310ah cells can reliably power a 2000w inverter continuously (> 10 minutes) in a 12v setup? Let's assume BMS can handle this. I plan to build a 4s 12v system in an RV with a Renogy 2000w pure sine wave inverter, and run some high wattage...

Hi, I am working a RV solar application with very limited roof space, the standard 100W panels won't fit. My goal is to have at least 200w panel on the roof so my panel options are as following. (due to AC unit shading, panels will have to be connected in parallel). (Vmax/Voc) 1. Renogy...

I plan to tackle the under powered inverter (1000w) problem, but due to the constraint of available space (I have a 16-foot trailer, space is very limited), the inverter has to be mounted far from the batteries. about 10 feet of cable run. I have read many posts on similar topics. In most...

I came across this post https://diysolarforum.com/threads/wow-inside-my-battleborn.27513/ and the picture shows a BMS inside the battery, it's really not that much different from JBD BMSes, same layout . The supplier model number seems to indicate it's a off-shelf unit. I have always thought...

Hello, A while ago I watched Will's youtube video on JBD Smart BMS and it looked nice so I purchase 2 of them (12v 4s 120A) from aliexpress https://www.aliexpress.com/item/4000425316662.html?spm=a2g0s.9042311.0.0.27424c4dTRne5e for 2 LiFePo4 banks. After the prep work (crimping...

I just purchased 10 feet WindNation 4awg red/black wires and 10pcs WindNation copper lug terminals from amazon, But it loosk like the copper wire core diameter is significantly smaller than the lug tube inner diameter. seems like I can push the entire wire with insulating jacket into the tube...

The 304ah cells and BMS both arrived so I will start to assemble my 2nd LiFePo4 battery soon. One question - where should I place the temp sensor? After watching Will's battery review videos seems making them in direct contact with the cells is not recommended? One year ago I built a 105ah...