4-Bay Smart USB Li-ion Battery Charger, Only Charger for 3.7V Rechargeable Lithium Cells, Compatible with 18650 14500 16340 Batteries (Batteries Not Included)

Charger Only, Batteries Not Included. Only for Lithium -ion Rechargeable Battery, Not AA or AAA Battery,Not NiMH Battery.

Retractable spring adjustable bays with rust-proof metal positive & negative terminals. Elastic structure fits multiple sizes of 3.7V cylindrical batteries including 26650 22650 14500 16340(RCR123) 10440 17670 18490 17500 17335.

Equipped with 4 independent charging bays to charge four batteries simultaneously. Input DC 5V 1-3A, single bay stable 4.2V 1000mA fast output. Separate LED indicator for each charging bay, red light for charging state and green light for fully charged.Built-in overcharge protection circuit, it will auto cut off power to avoid overheating, short circuit and battery damage.

Built-in integrated USB power cord, widely compatible with USB wall adapters, laptops, power banks and car USB ports. Plug-and-play design without extra drivers, suitable for home, camping and travel multi-scenario charging.

Anti-break wire design prevents cable fracture after frequent bending. Clear positive & negative polarity marks inside each bay to avoid reverse connection damage. Compact slim body saves storage space.