i have the ballistic 2700 batt. ,i agree to the all post above ,slow is the best i always do the .5a & make sure its warm not hot lol,some guys here simply dont get it they so itchy to run so they do fast charging when it comes to main damn too many complains start blaming the rx batt. slow servo torque & etc. lol ................when it comes to this ,the battery needs attention, the warm rx battery is way to go but not hot battery after charging