Nathan 🇵🇷If you're not a professional don't try this at home, I'm an idiot but my house is fire resistant.
I had a battery failure on my sweeping machine, it turns out there's an 18650 4s 1p cell cluster held in a plastic holder in this case. I removed the top of the case with a thin paint scraper and after carefully cutting the back of the case off I was able to get the cell cluster out I found the cells to be at 3.2v, the BMS has shut them down for safety.
I by passed the bms and charged the cells up to 80%, without reassembling the case I put the cell cluster back in the sweeper and screwed the cover shut. It's run 6 cycles without failure.
I noted that this is the small battery, there's an upgrade (not available in #puertorico) battery the robot can accept that's 4s2p cell cluster giving it a longer working range, of course I have a few 4s2p clusters with BMS, in the wrong form factor.. but that's why we invented battery welders and 3d printers.. right?
