Compatibility: Works with 3.7V Li-ion and 1.2V Ni-MH/Ni-Cd batteries, including sizes such as 18650, 21700, AA, AAA, and more. Features: Each of the four slots is managed independently, and an LCD screen displays charging progress, voltage, current, and capacity. Charging: The charger supports 2A fast charging and automatically stops charging when batteries are full. Availability: The product is available for purchase from various online retailers.
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