Insert the battery to be charged, then apply pressure to the negative contact with one hand so that the battery is pressed against the positive contact. Then turn (twist) the battery back and forth with the other hand. This will rub off any oxide layer at the contacts that may be present. - That should work at least temporarily.
In the worst case, the charger cancels the charging process prematurely. Much worse cannot happen (in my opinion).
Should i remove the battery as soon as it is charged? If i leave it in the charger after being charged (or about 1 hour) can this reduce the life cycle?
Should i remove the battery as soon as it is charged? If i leave it in the charger after being charged (or about 1 hour) can this reduce the life cycle?
I discharged an AAA battery , and when i charged it the capacity shown was about 90mAh less than the capacity shown when discharged. Why could this happen?