Meet Your Seller

YunYunKeJiShiZhuangDian

See Seller Store

Main image of DC 5V 2.1A Mobile Power Diy Board 4.2V Charge/Discharge(boost)/battery protection/indicator module 3.7V lithium 18650

Shop All YINGHUA Products | Visit YunYunKeJiShiZhuangDian Store

DC 5V 2.1A Mobile Power Diy Board 4.2V Charge/Discharge(boost)/battery protection/indicator module 3.7V lithium 18650

Be the first to review this product...

DC 5V 2.1A Mobile Power Diy Board 4.2V Charge/Discharge(boost)/battery protection/indicator module 3.7V lithium 18650

Overview

Specs

Reviews

Any questions? Our AI beta will help you find out quickly.

Try me now

Product Features
Charging voltage: DC 4.5V - 5.5V (recommended DC 5V)
Charging current: 0- 2.1A
Charging quiescent current: 100uA
Full voltage: 4.2V +-1%.
Discharge current: 0- 3.5A;
Discharge quiescent current: 50uA
Discharge efficiency: 96% maximum
Output voltage: 5V
Output current: 0- 2.1A;
Ambient temperature: -20 to +85
Module with lithium battery protection function (for lithium battery without
protection, with protection board)
Overcurrent protection (OCP)
Overvoltage protection (OVP)
Short circuit protection (SCP)
Over temperature protection (OTP)
Charge and discharge power level 4 interval indication

Additional Information
First Listed on Newegg	May 19, 2026

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

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

Return Policies

Return for refund within: 30 days
Return for replacement within: non-replaceable
This item is covered by YunYunKeJiShiZhuangDian Return Policy

Manufacturer Contact Info

For a directory of all our manufacturers, please click below.
Manufacturers Directory

Item#: 9SIC6HHKWG1563