Replace 4 AA rechargeable battery cells (NiMH or NiCad) with this universal 5V DC battery eliminator. Connects to USB port on a phone charger,
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Battery Eliminator - 4 AAA Battery Replacement - USB Powered
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4 x AA Battery Eliminator Kit
Battery Eliminator - 4 AA Battery Replacement - USB Powered
4 x AA Battery Eliminator Kit
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Battery Eliminator Replace Kit USB 5V to 1.5V 3V 4.5V