I have a solar phone charger from Maplin (
Batteries are in series within the device
Oddly one or sometimes two of the AAA batteries will get completely drained - this could be different batteries, placed in different slots. This will happen if I pre-charge the batteries before putting them into the solar charger, and it will occur if the solar charger is used to charge the batteries - i.e. it won't charge them.
So what would cause individual batteries connected in series to become drained?
Secondly, I have a similar device which charges an internal battery but uses a small wind turbine (
Cheers
dg