• Extremely high current output - low internal resistance - high conversion efficiency (65%).

• Not much capacity loss under heavy loads (little to no Peukert Effect).

• Very level output voltage curve, holding very steady at 1.2V until almost flat.

• Can be recharged many times (500-1000) if maintained properly.

• Copes very well with abuse such as heavy loads, deep discharge, etc, if maintained properly.

• Can be stored in any state of charge.

• Cadmium is bad for the environment.

• Cells exhibit voltage depression (“memory” effect) if recharged from a less than completely flat state (ie, they go flat before they should).

• Must not be over discharged.

• Reduced capacity with increased temperature (20% with each 8°C).

• Careful handling required because of high current output - don't carry in your pocket, especially with a set of car keys.