Gyro Doctor
Electronics Tech for over 45 years
Getting a parallel charging board is another investment you do NOT want to skimp on.
I'm generally against charging batteries this way (unless well experienced), but with a good board
(DON'T EVEN THINK ABOUT JUST USING A HARNESS) and knowing what you're doing it CAN be
done safely and effectively. Primarily you want a board that has fuses between all the stations to isolate
any "daisy chain" effects which can not only ruin otherwise good bats (the old adage "one bad apple spoils
the whole bunch" definitely applies here) but also cause dangerous conditions like catastrophic failure (FIRE).
Just "ballparking" it, with the iMAX's 6 amp output charging 2200mAh Syma bats at 1C (2.2 A) it wouldn't even
break a sweat doing two bats (in about an hour), and allowing the rate down to (<1C = 2A) would let you charge three
at once and would take a little over an hour.
I'm generally against charging batteries this way (unless well experienced), but with a good board
(DON'T EVEN THINK ABOUT JUST USING A HARNESS) and knowing what you're doing it CAN be
done safely and effectively. Primarily you want a board that has fuses between all the stations to isolate
any "daisy chain" effects which can not only ruin otherwise good bats (the old adage "one bad apple spoils
the whole bunch" definitely applies here) but also cause dangerous conditions like catastrophic failure (FIRE).
Just "ballparking" it, with the iMAX's 6 amp output charging 2200mAh Syma bats at 1C (2.2 A) it wouldn't even
break a sweat doing two bats (in about an hour), and allowing the rate down to (<1C = 2A) would let you charge three
at once and would take a little over an hour.