Looking for Li-Ion batteries? Check out the 2 pack Ultralast 18650 Retail Blister Carded Batteries! Each Lithium Ion 18650 size battery is 3.7 volts and 3400 mAh. This product is retail blister carded with 2 batteries per card.

The included 3600mWh (2400mAh) AA batteries utilize a new energy lithium battery core and are integrated in high-security packaging, which uses a smart protection chip and a patented explosion-proof module to provide peace of mind and reliability when charging and powering devices. They are also IP67 waterproof certified, ensuring no leakage from the splash-proof battery housing design. With a lifecycle of up to 1200 charge cycles, the included batteries are long-lasting and help to reduce battery waste over time.

Conveniently charges 4 AA or AAA NiMH rechargeable batteries at the same time. 3-5 hour charge time with auto shut off to prevent overcharging and battery damage. Manufactured in China. The charger is equipped with audio and visual alerts. A red light means that charging has started, and you will hear an audible beep when charging begins. A yellow light appears when charging is 50 percent complete and charging is continuing. A green light means charging is complete, and the batteries are 100 percent full. You will hear an audible beep upon completion. If a bad battery is detected, a red X will illuminate, and the charger generates a repetitive audible beep upon detection. Audio and visual alerts:Red light - Charging has started; audible beep when charging begins. Yellow light - Charging is 50% complete and charging. Green light - Charge is complete and batteries are 100% full; audible beep upon completion. Bad Battery Detection Alert - If a bad battery is detected a red ‘x’ will illuminate; repetitive audible beep upon detection.