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4 pack (1/3) AAA Rechargeable Batteries
2/3 AAA Button Top Rechargeable NiMH Button Top Battery for Solar Lights | Battery Mart
Exell Battery Rechargeable Nickel Metal Hydride (NiMH) 2/3AA Assembly Cell Batteries in the Assembly Cell Batteries department at Lowes.com
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1.2V 2/3 AAA Rechargeable Battery 400mAh NiMH With Soldering Taps For E-tools | eBay
Amazon.com: PKCELL 1.2v 400mah 2/3AAA NiMH Rechargeable Battery with Button Top (20)(Not Full Sized AAA Batteries) : Health & Household