liveforphysics
100 TW
Encapsulation of cells into a protective polymer gives the cells a chance to survive in corrosive and humid use. Silicone polymers are one of the worst types to use for this, ureas and urathanes have proven themselves.
batteryGOLD said:Sir, is this real? are U using solid resin to pack battery?
Or is flexible silicone resin flexible with thermal conductivity?
Remember cells expand/reduce with temperature and need air flow to breath..
bat resina2.jpeg
Hummina Shadeeba said:I’ve done a lot of intentional shorting of A123 26650s and haven’t been able to start a fire. Strangely the cells will greatly reduce current when shorted for a short time yet still show a decent voltage. It’s misleading and u can have a cell showing 3.6v but will barely put out current after being shorted for a bit of time.
My concern is this battery pack that i can’t balance and made with these cells. (Id planned to balance externally but for some reason now that the cells are built into a battery and potted and I drill through I can’t get a stable voltage from any of the groups and very weird. and I’ve now had two that have outgassed. I’ve done a lot of abusive testing on these cells including way overcharging and trying to charge cells that have outgassed and nothing dangerous has happened, making me feel safer, but I feel I’m pushing it now with this second out gassing bubble What u think?
It’s always said lifepo4 isn’t combustible even if u puncture it. That isn’t true and my friend drilled through one snd it ended in flames. It was a relatively minor fire that didn’t ignite the cells around but still. (he didn’t mean to drill it).