4 Pack 9 Volt 6F22 Li-ion Battery 9v Rechargeable Lithium Batteries 760mAh USB

The energy of 1pc Hixon 9V battery can equal 630pcs 600mAh 9V alkaline batteries at least and can last 20% longer than other batteries. Constant current mode to prevent current fluctuations on the impact of the battery.

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