No, 2A for a slot is enough. With 18650 I nearly always uses 1A. With 26650 the 2A current is fine for standard charge, many of the 26650 batteries could accept 3A or 4A for a quick charger (i.e. with slight damage to the battery), but I have not seen a need for that.
Making higher charge current in a charger will also make it more expensive, especially if you need PFC correction (Required at higher power levels).
That’s how I thought about it too, plus I know the 2A ~ .5C is better for the battery but 3A is under 1C and should be able to accept that charge …shouldnt really damage a 4200mAh 26650 battery until 4.3A should it?
IMO, damage at 1c will be minimal, it would be interesting to see cycles compared between 0.5 & 1c.
Above this damage will get progressively worse, ie on the 4200mAh, 4.3 amps would be so close to 1c I doubt a difference would be noticed
Right, I figured it was somewhat standard for the chemistry and based on that? But I guess there is no telling with the Chinese cells what is inside as to chemical composition and how they really stand up unless you tried it.
So what would you think about an integrated power supply (no power adapter!) in a dream charger with 4×3.0A output, say ~50-60Watts. Should it have active PFC too? :)
No stick to normal external PSU Dinoboy. The ability to run off of 12v battery bank is useful and also failure of PSU doesn’t mean scrap charger also :cowboy_hat_face:
Oh, 12V input is kinda standard with most modern chargers. Nitecore i4 was exceptional with both 12V input and built in power supply unit.
Right now i am charging 2x18650 in the Nitecore i4 starting off 3.80V (slot1 and slot4 occupied) and the back of the charger is really hot by now. Maybe the heat production has something to do with the built-in PSU? Output is only 2x0.75A (nominal) but wtf does the charger get so hot?
The two 18650's are slightly warm, nothing to be concerned about, i guess.
It's time for a new, better built charger. The dream charger.