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Product Name: USB Battery Charger Universal Dual Charger
（Batteries not included.）
- Input: 4.2-8V
- Output: 4.2V.600MA
- Range of use: suitable for two 26650, 18650, 16340 and other lithium-ion rechargeable batteries
- Features: Anti-overcharging, anti-reverse charging function, automatic stop when fully charged.
- How to use: Put the battery into the slot, plug it into the computer to charge the 18650 lithium battery directly, or connect a charger with USB to charge the 18650 battery, etc. The green light on the output is in the normal standby state, and it is red when charging When the voltage of the rechargeable battery reaches about 4.16V, the red light turns green, indicating that the battery is fully charged. Instead of stopping charging completely, it continues charging with a small current trickle.
