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Ni-MH Battery Charger : 8 Steps - Instructables
How to Make Battery Charger at Home : 6 Steps (with Pictures) - Instructables
NiMH Battery Charger Circuit
Multiple NiCd & NiMH Battery Charger Circuit
Amazon.com: Tenergy 12V Battery Pack Bundle with Fast Charger Ideal for DIY Projects, Medical Equipments, LED Light Kit, RC Models, Portable 12V DC Devices and More : Health & Household
A Guide to Building Battery Chargers - Circuit Basics