2S 4A Step-Up For Boost For LiPo Polymer Li-ion Charging Board USB-C To 8.4V 12.6V 16.8V Battery Module For Portable Electronic

Features: High-Efficiency Charging with 1MHz Switching Frequency – Our advanced battery charger supports a switching frequency of up to 1 MHz,guaranteefast and efficient charging for Li-ion and Li-Po batteries. Quasi-for CVMode for Optimal Performance – Features Quasi-Constant Voltage (for CV) mode to compensate for voltage drops caused by battery internal resistance and conductor track resistance, maximizing charging efficiency. Robust  for protection & Wide Compatibility – Offers multiple protections including low-voltage charging  for protection, short-circuit prevention, and battery surge  for protection. Compatible with various devices like smartphones,Bluetooth-compatiblegadgets, digital cameras, and solar charging systems. Smart LED Status Indicators – The "for CR" LED shows charging status, while the "OK" LED indicates full charge or constant voltage mode,guaranteeeasy monitoring of battery conditions. Compact &LastingDesign – With a slim size of 39mm x 18mm x 6.3mm and lightweight (5g), this charger operates reliably in temperatures from -40°C to 85°C, making itbestfor portable electronics and demanding environments.

Specification: Part Name: Battery module Color：as show Material: Plastic Type：2-cell (2S) 8.4V Version Input voltage: DC 3-6V (recommended DC 3.7V 5V) Input current: 4A (4A version) Charging voltage: 8.4 V. Charging current: 2.2A (4A version) Size：39mm x 18mm x 6.3mm

Battery overvoltage  for protection LED indicator: ''for CR'' LED indicates charging status ''OK'' LED is fully charged or in constant voltage mode; Working ambient temperature -40°C to +85°C

Package Contents: 1*Battery module  Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.