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Hi folks, I am monitoring my DIY 230Ah LiFePO4 battery bank with the Xioxiang App (iOS). It builds a Bluetooth connection to the JBD-SP04S028-L4S-150A BMS. Yesterday evening the SOC was around 55%, this morning it was 95%, at > 200 Ah, while it was at around 145 Ah last night. As I can...

Hi folks, with the help of Will‘s videos and this forum, I was able to build a 12V 320AH LiFePo4 battery bank. I replaced the old sealed Lead Acid 12V 75AH battery in my RV, a 2001 Knaus Sun Traveller, based on a Fiat Ducato. I have 200W of solar Panels on the roof, that charges the battery...

4 x 280 Ah LiFePo4 cells in serial, see image. When screwing down cables to the main positive pole (cell 4), I let the wrench slip and it shortened cell 4... It was about 1 second, sparks, then the wrench fell down. Sh**! How can I test if the cell(s) took damage? How probable is this...

Hi everyone, I remember reading here on this forum that some people 3d-printed cases for their DIY battery banks. I'd like to pack my 4 280-Ah-cells and a BMS into such a box. Nothing fancy, just a simple box with 310 x 230 x 200 mm (L x W x H) INSIDE dimensions. The lid could be fixed with...

Hello all, I'm starting building my first LiFePo4 battery from 4 prismatic cells. Having watched Will's video on top-balancing, I connected my cells in parallel and hooked them to my power adapter at 3.65 V. Within 3 hours, it went from 3.553 down to 3.392 A, but it has to go down to 0...

Hi folks, came across @Will Prowse 's videos on Youtube just recently - amazing, thank you so much for the good work and your willingness to share your knowledge! I live in Germany and started to dig into solar power on my small RV just some months ago, this is my setup: 2 x 100W flex panels...