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USB charging cable 3.7V 4000mah/2000mah lithium battery JST male plug polymer lithium battery(without battery)

Note: Just USB cable without battery
Product Name: 3.7V USB Charging Cable
Plug model: JST male plug
Input voltage: DC 5V 0.5-2A
Output voltage: DC 4.2V 500mA
Polarity description: JST male plug 1 is connected to the negative pole (black wire) and 2 is connected to the positive pole (red wire)
Function description: The charging cable is equipped with an intelligent charging management IC, which can accurately charge 3.7V lithium batteries. It automatically stops when fully charged and will not overcharge. The cut-off voltage at full charge is 4.23V, making reasonable use of the characteristics of lithium batteries to better extend their service life.
Charging indicator: The red light will turn on when the power is plugged in, the red light will turn off when the battery is connected for charging, and the red light will turn on when fully charged.

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Additional Information
First Listed on Newegg	July 15, 2026

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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