It appears to be a common thing with those chargers. I've seen others mention it and I've experienced it myself. I have two of them (neither was from CoV, acquired long before I became a customer, so don't worry, Bruce ;-) ) and both do that "whine", but only when the
batteries are really low and the sound fades as their charge level comes up. I check my
batteries with a meter after charging and haven't noticed anything else out of the ordinary (no heat on the charger or
batteries while charging, etc), so I've just lived with it for several months without issues.
That said, I do plan to upgrade to a better charger at some point (used to have a Pila and in hindsight I regret selling it), but for now the Trustfire ones are serving me well
Bruce, if you
do happen to notice anything wonky with that charger would you be so kind as to share any pertinent info for the sake of those like me who had thought it was normal?
