Solar Powered Battery Charger Solar battery charger. Recharge batteries with the sun! Charges 11 different NiCd and NiMH battery sizes (AAA, AA, C, D, and 7 GUM sizes. Never be without power again! Charges 2 pcs of NIMH or NiCad "D"/"C"/"AA"/"AAA" size rechargeable batteries Adjustable top lid and bottom stand for optimal sunlight exposure Blocking diode to prevent discharge