I have used a hobby king 4s charger like this for years. Basically charges each cell by itself just like this one, however it has no screen or any other bells/whistles. Many of the maxamps packs I reconfigured went on this charger to get them balanced, as using a std charger would take hours. Mine only goes up to 2 amps, but can do multiple packs up to 4s total. And it was 20 bucks. I might have to buy one of these bc168...