♻【❗ Note: No Battery Only Charger】【❗ Only for Lithium -ion Rechargeable Battery,Not AA or AAA Battery,Not NiMH Battery】【Multi-Function】 4 slots can be adjusted according to different battery lengths. This charger is suitable for 26650/𝟣𝟪𝟨𝟧𝟢/18500/18350/14500/10440/17670/16340 lithium-ion rechargeable batteries.♻【Intelligent Charger】USB Smart Battery Charger 4-Bay Has four independent charging channels, it can charge four lithium batteries at the same time. The charging indicator allows you to clearly understand the charging status of the battery. Red light when charging, green light when fully charged..♻【Universal USB interface】 The latest design of the USB battery charger, the working voltage of the battery charger is 5V, so you don't have to worry about the high voltage to bring you damage and disaster. USB charging can help travelers recharge their lithium-ion batteries anytime, anywhere, especially if you don't have enough outlets, and you can even simply plug it into your laptop or other device..♻【Safety Assurance】: 𝟣𝟪𝟨𝟧𝟢 Battery Charger 4 Slot Discharge Function Comes with special charge and discharge management circuit. With multiple security protection settings, the 𝟣𝟪𝟨𝟧𝟢 4 Bay charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the Li-ion battery, which makes users using the product without any safety concern..♻【100% Satisfied Warranty】 If you have any questions about this 4-channel 𝟣𝟪𝟨𝟧𝟢 battery charger, please feel free to contact us by sending email, we would like to reply in 24 hours. If there is any product quality problem, we would like to provide full refund or resend you a new battery charger for replacement.