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Akari 4V Sealed Lead Acid Rechargeable Battery for Mosquito Bat & Toys (0.4Ahβ2.5Ah)
Specification: Input: AC 100V-240V 50/60Hz Output: DC 4.2/8.4V 550mA Power: 6W (MAX) Dimension (MM/L*W*H): 81.0*55.0*28.0