Photos as requested, I got several of these from the litho batteries I picked up from someone who was going to build a power wall and gave up on it.Depends on what HVC and LVC it has for each of the cell groups it monitors. As long as the LVC is the same or higher than the cells you're using, and the HVC is the same or lower than the cells you're using, it is safe enought to use....except:
It's not uncommon for the BMS to be what kills cells, by having a balance shunt in one or more channels fail stuck on, so ti just keeps draining these groups all the time, utnil they finally are below empty or even 0V.
There are some tests youc an do depending on what parts you can access ont eh BMS. If you can post a pic of both sides of ti we can draw arrows to points you can test and what to set the meter to and what you'd expect for good or bad results.
On that subject several of these LI-PO packs are obviously are "Spares Parts" but useful. However Three of them, all identical, visually look perfect, no puffed cells or visual imperfections, and they appear fully charged, (little over 36 v but have been on a shelf for ages here, and god knows how long before. SO I WAS THINKING, after testing my 18650 battery. I could litterally use the lead I made to plug that into the bike to put these straight on the bike and see what happens, (Not a lot to loose, who knows I might have a couple of perfect batteries in the pile). What do you think..... I'll be careful and keep an eye on them , short trips round block check temp, and voltages.