How rechargeable batteries, charging, and discharging cycles work
Toyota/Honda/Lexus/Nissan/Ford Hybrid Car 7.2V/9.6V/14.4V NiMH Battery Testing/Maintenance/Regrouping Deep Cycle Charge and Discharge Tester - China Battery Analyzer and NiMH Battery Analyzer
Beginners Guide: How long do I charge my Airsoft NiMH battery for?