June 14, 20242 yr Please help! I have a Pylontech UP5000 that does not want to switch on. No lights come on. I measure 48v on the terminals and each cell measures exactly 3.2V (measured on balance plugs). Inverter can't communicate with the battery nor can I connect to it with batteryviewer over serial. This is a battery being sold on Marketplace for a decent price. Seller is stating that LED indicator lights stopped working a while ago, but that the inverter kept going. I suspect he was using it in lead 'acid mode'. I haven't tried it like that though. Seller allowed me to bring battery home to try and revive it (we have mutual friends ). There's no obvious burns or smells on the BMS (it's still in the enclosure so haven't checked the back of the board yet.) Where do I start? Many thanks!
June 15, 20242 yr It may be that the battery was run down too low and is in protection mode. You could try to wake it up via the console port. See below link. https://github.com/helgeerbe/OpenDTU-OnBattery/discussions/603
June 15, 20242 yr Author Thanks @Nexuss I don't think that's the case since the battery is sitting at 48V, but I'm definitely going to give it a try!
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.