GP AL40 AAA: Pack of 40 alkaline AAA batteries at reichelt elektronik
These AAA batteries are micro-USB rechargeable : r/mildlyinteresting
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Amazon.com: USB Rechargeable Lithium AAA Batteries Triple A Li-ion Battery with Micro USB Charging Cable 1.5V 450mAh 1h Quick-Charge FUVALY (4pack) : Health & Household
Gp batteries Super Alkaline 1.5V AAA Micro LR03 Batteries White| Dressinn