4 NiMH "AAA" rechargeable batteries * each battery rated at 900 mAh * Energizer Rechargeable AAA Batteries (4-pk.) Battery Chemistry: Nickel-Metal Hydride (NiMH), Battery Rechargeable: Yes, Battery Size: AAA, Sold as 1 pack, Green Compliance: Yes, Output Voltage: 1.2 V DC, Product Model: NH12BP-4
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