Myoelectric users will know that standard nickel cadmium batteries have some limitations. These batteries need to be fully discharged before being recharged otherwise memory problems can result. Also more than one battery a day may be required.

Lithium batteries can be charged at any time without concerns about how much power has been discharged. They charge more quickly (around four hours) and last considerably longer before they need recharging (cutting down the number of batteries an amputee needs to keep on hand).

Hosmer 7.2v Li-ion Power Pack	Otto Bock Energy Packs
Power Plus by RSL Steeper