Maybe a buzzer would be a good idea for some chargers. To beep when charging is complete or each time a quadrant is complete or when battery is almost empty (in power bank mode).
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As long as it can be disabled and ideally is off by default.
Yes, of course!
I have VC4, VC4H and VX4 chargers. I’m generally happy with them. Nice additions would be displaying the cell internal resistance, and a refresh mode (basically Grad but repeated three times in sequence). I can’t guess the IR of an AA cell from the capacity, I have to try them in a high powered light and see if the high mode works.
I’d really like to see a PB4: a four-slot charger/powerbank that can output 20V, 3A (or more) PD for laptops.
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