High Capacity & Reliable Performance – Kastar 2-pack rechargeable batteries (3.7V, 1400mAh, Lithium-Ion) built with premium Japanese cells for longer battery life, stable power, and no memory effect. Dimensions: 1.55" × 1.22" × 0.23" (39.4 × 31 × 5.8 mm). Weight: 1.0 oz.
Slim USB Charger Design – Compact and lightweight, ideal for travel or daily use. Input: 5V/2A; Output: 4.2V 600mA.
Flexible Charging Options – Charge via USB wall adapter, car charger, or computer. LED indicator: Red = charging, Blue = fully charged/standby.
Smart Protection Technology – Built-in CPU control with constant current/voltage prevents overcharging, overheating, and short circuits.
Important Battery Orientation – If the battery does not charge, flip it so the back side faces up and align connectors with the charger’s positive and negative contacts.
