here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
Meet Your Seller
2S 20A Lithium Battery Protection Board BMS Module 7.4V 8.4V 18650 Battery Management Board Standard/Balance 8.4V-9.0V Charging Voltage 10A Charge 20A Discharge For DIY
- 2S design supports lithium batteries with a 3.7V nominal voltage and 4.2V full voltage, including 18650, 26650, and polymer types.
- Choose the 45 x 15 x 3.4 mm Standard version or 48 x 20 x 3.4 mm Balanced version for your build requirements.
- The board supports an 8.4V to 9.0V charging voltage range for compatible two-cell lithium battery configurations.
- Continuous discharge current is rated up to 20A; reduce the load current when the cooling environment is not adequate.
- Continuous charge current is rated up to 10A for the connected battery configuration and charging setup.
- The Standard version supports starting drills with currents up to 25A below 50W, or resistive loads below 168W.
- The Balanced version supports starting currents below 25A and drills below 50W, with a balanced charging function.
- For drill starting, use two 10C-20C batteries or four 5C-10C batteries; ordinary 18650 batteries cannot start the drill.
- Connect 0V, 4.2V, and 8.4V strictly according to the diagram, using copper wire measuring 2 square mm or above.
- During charging, 430 resistance heating indicates the balancing circuit is operating; match the two batteries closely in capacity and internal resistance.
+
+
Overview
Specs
Reviews
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
Product Description:
This 2S 20A lithium battery protection and battery management board is designed for 7.4V lithium battery setups using 3.7V nominal cells with a 4.2V full voltage. It supports 18650, 26650, and polymer lithium batteries for DIY battery applications. Standard and balancing versions are available according to the required charging configuration.
Core Selling Points:
The board supports continuous discharge current up to 20A and continuous charge current up to 10A. The standard version is suitable for starting drills with currents up to 25A below 50W or resistive loads below 168W. The balancing version supports the same application range and provides a balanced charging function. During charging, heating of the 430 resistance indicates that the balancing circuit is operating.
Technical Specifications:
Product type: 2S lithium battery protection board/BMS board. Nominal battery voltage: 7.4V. Full battery voltage: 8.4V. Suitable cell voltage: 3.7V nominal and 4.2V full voltage. Charging voltage: 8.4V-9.0V. Continuous discharge current upper limit: 20A. Continuous charge current upper limit: 10A. Standard version size: 45 x 15 x 3.4 mm. Balancing version size: 48 x 20 x 3.4 mm. Supported battery types: 18650, 26650, and polymer lithium batteries. Balancing version: balanced charging function.
Before Purchase:
Connect 0V, 4.2V, and 8.4V strictly according to the wiring diagram. Charge the battery before output when connecting it for the first time. Use copper wire above 2 square mm for the 0V and 8.4V cables; do not use nickel strips. For drill startup, use two 10C-20C power batteries or four 5C-10C power batteries; ordinary 18650 cells cannot start a drill. Do not mix batteries with different conditions. The capacities and internal resistances of the two batteries should be as close as possible. If the cooling environment is poor, reduce the load current.
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 GeekSpace Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory
LOADING...