So I’ve read many posts about li ion batteries, but not sure that I understund all I need. I have 8s4p 25r battery pack with 60A batterysupports.com BMS, with 2A brick charger from ebay.
I have 3.0v cut off start and 2.9v end on the vesc settings, so how low should I drain my battery when driving? Last time I drain it to 3.15 per cell, it’s still not cut off start- its o.k to ride till 3.0v or 3.15v? Or I should count voltage sag and never go lower than 3,2v for an example? Or it’s not a problem drain till cut off starts kicks in?
I charged my battery till green light was on laptop style charger, but when I wanted to ride- my phone with Ackmaniac app showed me 4.26v per cell So it means that it’s overcharged? It means that bms not doing his job like it should? Or it is o.k. those 0.06v extra? I know that in bms parameters say that it has over charge protection 4.2 +/- 0.05v, but does those 0.05v are harmful for cells? So better would be monitor voltage while charging and never go above 4.2v? How can I monitor voltige while charging? Asking because long time ago when I was in rc boats we used nimh batteries, we checked V while charging with voltmeter and numbers was compleate different vhen checking V with no charger attached vs charging. If I remember full battery was 1,5v when charger is attached and 1,35v should be consider full battery when no charger is attached. So I don’t know how to say if li ion cells are full when checking voltage while charging.
After ride should I put battery to charger or it can stay drained (3.0v for an example) for x days? Or 3.0v per cell is already to low to store batt. even 2 days? For longer storage there is storage v, that is clear. 100% full can be stored few days, isn’t it? I can put my board on charger whatever I want, I mean, even after 15 min ride I can put it on the charger if I need, isn’t it? Because there is no memory on li ion cells like it is on nimh
Maybe, stupid questions, but I just didn’t find 100% answers on my questions yet.
Thanx for your time, guys! Have a great day!