10/08/2026Published by on 10/08/2026Categories 2Slot USB Battery Charger For 3.7V AAA AA CR123A 18500 26650 Lithium BatteriesWith Short Circuit protection and Reverse Polarity protection. Input Features Micro USB: 5V 2A. Model: PK-8221 for 1~2pcs 3.7V Li-ion Battery. With 2 LED indicators, intuitive display the charging state.