- Dec 29, 2021
Maybe did you miss something?
"The charge mode can select between 200, 300, 400, 500, 700 and 1000, default is 400mA. The 1000mA is only available in slot #1 and #4 and only when slot #2 and #3 is empty."
Surely 700mA, in my opinion, are too much for a a small AAA. Anyway its default is 400mA and you still can lower it. These are (about) the same values available in Opus BT-C2000 or its clone, the EverActive NC3000 (it only adds 1400mA, but this value is not real) and they are quite good for a lot of batteries.
The charge current used by BT-C700 is about 1A pulsed (low frequency pwm) while BT-C2000 uses 1.25A. Its duty cycle is varied to achieve the average current chosen.
As I wrote, I did not noticed any premature degradation in AAA or AA batteries using this kind of chargers.
I consider much more dangerous to miss the correct end of charge point and to "boil" a battery. This NEVER happended to me with these kind of chargers.
Maybe using a DC charge (not pulsed) you theorically could improve a bit the battery life, if you would be able to charge them without overcharging them due to the miss of the correct identification of the full charge point, but this seems to be quite difficult.
Anyway I don't think I can complain about it, considering I still use batteries bought on 2015, always charged using those type of chargers.