Hixon 1.5 V AAA rechargeable lithium battery 1100 mWh, set with 4 lithium AAA batteries and quick charger: Amazon.de: Electronics & Photo
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Kamnnor Rechargeable AA Lithium Batteries, 1.5 V USB Rechargeable Battery Li-Ion AA Batteries 2600 mWh with 2 in 1 Type C Charging Cable, Quick Charge in 2 Hours, 1200 Times Cycle Charging,