RE: reciever battery only last 10 mins after charging
A peak charger is not ideal for charging receiver and transmitter packs.
The question here is what charge rate is the wall charger and what capacity is the battery, only when we know these facts can there be a determination as to how long to charge the battery.
If the charger provides a charge rate of 1/10th the capacity of the battery, then the correct time for a full charge is 14-16 hours.
Pete