Rating Newest Oldest. Best Answer: For some types of batteries you can buy a separate desktop charger that will allow you to remove the battery from the phone and charge it on its own.But if it is only for 2 weeks, it doesn't seem to make much sense.ating Newest Oldest. Best Answer: For some types of batteries you can buy a separate desktop charger that will allow you to remove the battery from the phone and charge it on its own.