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Amazon.com: Power Supply for 3 AA, AAA Battery, (2 Pack) 18500 Protected 3.7V Rechargeable Battery 1600mAh with Charger - [Replace 3 AAA, 3 AA Battery for 21, 51 LED UV Flashlight ] : Health & Household
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3 x AAA Battery Holder with On/Off Switch and 2-Pin JST : ID 727 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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3 x AA Battery Holder with 2.1mm Plug : ID 3842 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Alkaline AAA batteries - 3 pack : ID 3520 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: Amazon Basics 4-Pack CR2 Lithium Batteries, 3 Volt, Long Lasting Power, Low Self-Discharge Rate : Health & Household
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Amazon.com: Power Supply for 3 AA, AAA Battery, (2 Pack) 18500 Protected 3.7V Rechargeable Battery 1600mAh with Charger - [Replace 3 AAA, 3 AA Battery for 21, 51 LED UV Flashlight ] : Health & Household
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