All suitable for charging NiCd and NiMH cells Basic unit charges at 60mA suitable for 1 to 12 cells The adjustable unit has an output between 50-400mA (limit to less than 250mA when charging less than 6 cells) The fast charge unit for 2 to 10 cells charges at 570mA and the unit for 1 to 6 cells charges at 900mA and use delta V sensing to detect end of charge status and switch to a trickle charge of 14mA. End of charge safety timer fitted LED indication Short circuit and reverse polarity protected