Hi mate the key things to look for is how many watts it can do this is 50w the one I sent you is 150W, then its discharge rate most are about 5w as the charger will get hot doing a discharge , I always fly my batteries to a store charge
what can it do fast charge/balance charge/ store charge / discharge , well most do this, but balance and store are very important
then its what power does it need to work most are 10v to 18v so you can use this charger at the field by using your car battery
at home use a power pack
cycle is if you want to break in a new battery it will charge and discharge up to 5 times to get the battery to the max of its power out put
or is you have a battery thats not balancing well you can cycle it to get it to balance better
The more powerful the charger the better it works but then the more power full the power pack need to be
This is my set up a 540w power pack a 400w mega charger to charge 4 x 6 cell 3000mah and a 50w turnigy charger to do 4x 3 cell 2200mah all are charged at the same time so the mega is running at 12amps no where near it max of 20amps and the 50w is running at 5amps its max
what can it do fast charge/balance charge/ store charge / discharge , well most do this, but balance and store are very important
then its what power does it need to work most are 10v to 18v so you can use this charger at the field by using your car battery
at home use a power pack
cycle is if you want to break in a new battery it will charge and discharge up to 5 times to get the battery to the max of its power out put
or is you have a battery thats not balancing well you can cycle it to get it to balance better
The more powerful the charger the better it works but then the more power full the power pack need to be
This is my set up a 540w power pack a 400w mega charger to charge 4 x 6 cell 3000mah and a 50w turnigy charger to do 4x 3 cell 2200mah all are charged at the same time so the mega is running at 12amps no where near it max of 20amps and the 50w is running at 5amps its max