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Panasonic Unprotected Raw Li-Ion 18650 3400mAh
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Amazon.com: ALLMAYBE XTAR PB2S 18650 Battery Charger with XTAR QC3.0 18W Wall Charger USB C Port 21700 Battery Charger with USB Output Function for 18650 20700 Unprotected 21700 Batteries-Not Included Batteries :