Two electronics-related questions, but unrelated to each other:
LiPo Overcharge?
Picked up a pair of Powerhobby 4S 8000mAH LiPo batteries while I wait for my SMC batteries to come in. One of the packs has been used once, maybe twice. When charging it last night, I realized this morning the time cutoff kicked in on my Venom Pro Duo charger. The battery is showing a total voltage of right around 17v, with cells showing a high of 4.285v and a low of 4.263v. Not entirely sure why this didn't stop charging as it should have, but should I be concerned about this battery being overcharged? It doesn't appear swollen, but it is in a hard case so it would have to be quite swollen for it to be obvious. I absolutely do not want to take chances when it comes to safety with any battery, but I'm unclear if this is significant enough to be concerned.
Hobbywing XR8 ESC
When cleaning my buggy this week, I noticed the ESC has this white substance between the two capacitors. I don't recall seeing it before, but I'm honestly not sure I've looked this closely before. Is this normal?
