Originally Posted by
SIKE00
If it takes roughly 1hr to charge a 2s 5000mah batt at 5amps. Then if you get a charger that can charge at 15-20 would it then only take around 15-30 min and does it harm the batt to charge it that fast. Also if i am anly going to ever run 2s batts is it worth it to get highend charger for higher than 5amp rates is there a benefit other then faster charge times.
Most battery manufacturers say you can charge at twice the "C" rating (5000 @ 10 amps) safely. I've been charging 1 cell and 2 cell (good Batteries) for years at 15-17 amps and no issues. You're gaining charging time yes, hurting the battery, not as much as you would think. I've done this weekly over the whole winter months and run time losses and voltage drop-off are minimal. Cheap batteries may not be so lucky! Running a battery down to cut-off voltage and re-charging would take 1/2 hour for sure. With the new breed of chargers out there, you can charge up to 40 amps if you have the b---s!!! jmo