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Amazon.com: Galaxy SHENMZ 2 Pack Battery for 3.7V 3400mAh Flat Top Battery, Rechargeable, 2 Bay USB Battery Charger for Flashlight, Camera, Small Fan, Sound Equipment.… : Electronics
Amazon.com: 18650 Battery Charger 4 Separate Universal Charger for 3.7V Li-ion Rechargeable Battery 18650 18490 18350 16340 14500 21700(RCR123) Ni-MH Ni-Cd A AA AAA AAAA : Electronics