In HKJ’s review here of the Xtar VC8,
It mentions that sometimes, the VC8 will not properly charge NiMh batteries to fully-charged status, and sometimes, it overcharges the batteries.
(a 2000mAh NiMh gets charged to over 3000mAh, or sometimes just 600mAh).
What might be the possible problem for this and can it be fixed?
Also, the “grading” function for NiMh batteries is also affected (“grading” function will do a charge-discharge-charge cycle), however, the “charging” portion may sometimes not charge to “fully-charged” state, so the “discharged” capacity will be lower than actual. Another thing, is the third “charge” cycle seems to not charge to fully-charged state too.