Greetings, I'm new here.

I let my batteries go into deep discharge, partly through neglect and partly through a 2 month trip outside the country where I couldn't charge my battery. So, this one is on me. Here's the quick stats:

ebike system: Bionx 48v SL 350 HT XL

-According to this web page (Using BionX diagnostic mode), I have the following:
-1.4 volts (00014) in the battery. ouch. Is that at least a record?
-Error Code 25 (low voltage).
-25.8v DC out of the charger.

Can you recommend a fix or product? Warranty has expired. I've talked to several online retailers who haven't offered much help. I also took my battery to Batteries Plus (local battery/electronics store) and they won't touch the battery pack.

I'd like to consider all options, including DIY projects, before I give up. I probably won't be buying another Bionx system.

Many thanks!
Tuchango