RE: Battery help..
I would just let it go the 3 hours. if you take it off before then you wont get a full charge. the charger should say the mah charging current rating. These guys got the equation right above. just divide the total capicity by the charging current and it will give you hours. You shouldnt charge much over 1600 but up to 1700 might be ok. MOst packs have higher capacity than their rating says. 1650 is good but you should really just check the charging current. if you are not sure post it and I can run the math for you.