All our chargers are from 6 to 8 amps,made from aluminum which is perfect to dissipate heat,most chargers on the market today are only 2 amps and are plastic. In the past it was thought that the lower the amps the better for the longevity of the battery pack,,when in fact its best to charge at relatively higher amps for the new packs that are offered today, when packs are 24 or 36V at say 8 amp hours then a 2 AMP charger is ok,,but when you have larger packs that are say 36V22AH or 72V17AH then it is far more preferable to have a high end charger that is capable of 6 or 8 amps.