Also, based upon battery level and resistance , the current rate will drop even if you set it at 3A - so those are additional things that will lower the charge rate. The next time I have 4 batteries pretty well depleted I will keep an eye on the current rate to see how it behaves.
Good to hear. What was the highest temp you observed during 4x3A charging? Starting with fully depleted cells, how long were all the cells at 3A before current started ramping down?
Because of the rapidly cycling current/voltage/IR display in your video, I can’t tell when it started ramping down. I also can’t see what the other 3 channels are doing… what level of charge they’re at.
But your temps are much lower than mine. Mine reached 53C, and that’s when the reboot happens.
I looked at the pictures
to 4208 is last with 3A
start picture 4101 with 30 seconds pause
so at 4116 12,5min I switched to 3A manual
54minutes till current ramp down
charge for a 3000mAh high drain cells took 86 minutes
Is there an “advised amps” list for cells? Is it a percentage of the peak discharge or just a fixed number for a certain cell size?
I even saw a charger that does 4A.
So before I start cooking my cells I would like some advise on 18650, 20700, 21700, 26650, 32650
Every battery model has a data sheet from the manufacturer. Each model will specify a charge rate for rated life (typically 500 cycles at a certain capacity loss) and a maximum safe charge rate (which could reduce capacity quicker). Typically 1A is good for all 18650 and your not in a rush.
There was a list of 18650 cells with recommended charge rates, but I cant find it.
I just bought this charger for $15.99 on Amazon? $9 promo with $5 coupon!
I have an Opus arriving too but I couldn't resist this deal after reading this and other great reviews! I actually need to replace an Xtar VC2 that is 50% malfunctioning.
I’m pretty sure you didn’t. Maybe you bought the C4?
Wait, are you saying you used two coupons to save $14? So the Amazon price was $30? I have never seen it that low on Amazon. Only on Aliexpress when they had their big 11/11 sale.
Do you have a link?
The cheapest I see is $38 which is a pretty decent price for Amazon. Usually it’s $45.
I’m pretty sure you didn’t. Maybe you bought the C4? Wait, are you saying you used two coupons to save $14? So the Amazon price was $30? I have never seen it that low on Amazon. Only on Aliexpress when they had their big 11/11 sale. Do you have a link?
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