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Thanks, gonna give it a try. I had decent readings for a few days though. Could see how much was put into the battery during the day, used some appliances, could see the numbers going down. Seems that some kind of reset happened, that set the percentage to almost 100%.

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...

Yes, it is German. The E-Bloc is called CALIRA EVS 30/18, I didn’t open it, but found a manual online, which is in German, too, I‘ll post a link: https://www.cabotron-elektronik.de/app/download/7765268/BAN_EVS_30_18_DS_IU.pdf

This is obviously what my electrobloc thinks about this :D

Thanks for your reply. It is not the BMS though, there‘s no short in the logs, and the sound of the relay comes from the electrobloc. I can‘t disable it without going into the electrobloc, which I‘d rather not do. In my fantasy, the paralleling of the two batteries causes a high amperage, so...

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...

Luckily not :)

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...

Thank you everyone! It took me some time to get back to the cells. Followed the tutorial, built them up serially with bms and charged with 14.6 V, then paralleled the cells and continued at 3.65 V. Amperage went down to about 0.020 after a full day. Disconnected to power supply after some more...

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...

This looks great, @MatMat! Have fun!

I glued my flexi-panels directly to the roof of my vehicle with Dekasyl MS-5, a "sylil modified polymer power glue" - whatever that is. I was reluctant at first, would they really stay up there? Last month, one of the panels had a damage (no idea how that happened), and as it had warranty, I...

what would be brands to look for?

Thanks for that heads-up, @DavidHouse. Too bad they sent you damaged cells. I think I will look for a different seller.

Hey @snoobler, thank you so much for your complete reply of my many questions! Regarding the 1st part of (7), my inverter has an Integrated mains priority circuit; when connected to shore power, it will disconnect from the battery and provide shore power, when shore power is off switch back to...

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...