Amazon.com: DURNERGY 6Pcs 2/3AA Batteries NIMH Rechargeable Battery 1.2V 650mah Button-Top Battery for Digital Camera Solar Lights Printers (1.18 * 0.59 inch, 2/3AA, NOT AA or AAA Size) : Health & Household
OmniCel ER14335 3.6V 1.65Ah 2/3AA Lithium Battery with Tabs
1/3AA 1.2V 170mAh NiCD Rechargeable Flat Top Assembly Cell Battery