Originally Posted by
Evoking1230
Stupid question...
On average, how long should it take to charge a 4s 6500mah lipo with a charger capable of 7A at a 1C charge rate from LVC(3.4v)
I have a charger now that can only charge up to 6A and it takes forever to charge the above pack. About 90 minutes. And for whatever reason, it only charges at 3.85A max lol.
I'm trying to justify the extra cost of upgrading to a charger capable of 7A or higher.
Thanks!
In Layman's terms, a 1C charge rate will take approximately 1 hour to charge a battery.
Convert the mAh (milliamp hour) capacity number to an Ah (Amp hour) number...Just take the capacity of the pack in mAh, divide it by 1000 to get Ah, or just move the decimal point left three times. Your 6500mAh battery pack = 6.5Ah battery pack will (theoretically) discharge 6.5 amps in 1 hour, and will take 1 hour to charge at 6.5 amps. 1C charge rate = 1 hour . Approximately because of variables. To cut the charging time in half of a 1C charge rate, you would do a 2C charge rate. Charging your 6500mAh (6.5Ah) at a 2C rate...you would set your charger to 13 amps (6.5 x 2), and would take approximately 30 minutes to charge. This is assuming you have a charger with that much power.
Lot of good info here...
http://www.rogershobbycenter.com/lipoguide/