[Jay Kickliter] built his own coin cell battery ... which use AA or AAA have NiMH rechargeables in them and have used the same pair for year and years. So we’re happy to see this charger project ...

Hit your parts bin and set aside an afternoon to build a wind turbine that recharges batteries. You can see two AA batteries hanging ... a dedicated storage battery and the on-board battery ...

Battery chargers for lithium batteries are designed to support backup power sources ... Standard battery types include AAAA, AAA, and N; AA, 1/3 AA, 2/3 AA, and 1/2 AA; A and 2/3 A; C, Cs, and 4/5 Cs; ...