Short Charging Time- The PowerPro LiFe Battery can be recharged in about 20 minutes bymost of the charger equipped with LiFe charging function. Two LiFebattery packs allow you to enjoy your R/C all day long when you use andrecharge the battery packs alternately. Long Lasting Life - The PowerPro LiFe Battery featuresapproximately 1000 recharging cycles. The LiFe battery does not loseits maximum energy capacity as it does not have a memory effect whichis observed in rechargeable batteries. Maintenance Free - The use of a discharger to recondition thebattery after each run is not required anymore. In addition, minimalself-discharging enables long term storing by simply charging thebattery to about 50% of its capacity. Light in Weight - A great feature of this battery is its light weight. It weights approximately half of a Ni-MH Battery.
Where to buy? http://www.rcmart.com/catalog/powerpro-m-346.html