Amazon.com: Haktoys Ni-cd 4.8V 500mAh Rechargeable Battery Compatible Products and Other Compatible RC Hobby Products : Electronics
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Amazon.com: OooSure Rechargeable Ni-CD Battery AA X 4 1400mAh (Update from 500mAh) 4.8V SM-2P Plug for RC Toy Household Electric Appliances Lighting Equipment with Charging USB Cable : Toys & Games
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10 pack) 4.8v 700mAh Ni-CD Battery Pack Replacement for Emergency / E – Batteryhawk, LLC