The 3S 4A Step Up Boost Lithium Battery Charger Module charges three-cell lithium battery packs — where three Li-ion or LiPo cells are connected in series to form a 3S pack with a nominal voltage of 11.1V and a full charge voltage of 12.6V — accepting standard 5V DC input through a USB Type-C port and boosting it internally to deliver 4A of charge current to the connected 3S pack. This 3s lithium battery charger module takes a regular 5V USB-C power supply as input, making it more convenient to power than chargers that require a specific higher-voltage PD adapter, while the internal boost circuit handles the voltage step-up from 5V to the 12.6V output needed to fully charge three cells in series.
The 3s battery charger module’s auto cell balancing is its standout protection feature — in a three-cell series pack, individual cells can charge at slightly different rates due to small differences in capacity and internal resistance, and without balancing, one cell may reach full voltage before the others, risking overcharge damage to that cell.
The auto cell balancing circuit on this type c 3s charger module monitors each cell individually and equalises the charge across all three during the charging cycle. The 12.6v type c charger module’s 4A output charges 3S 18650, LiPo packs, and Li-ion tool batteries at twice the current of the 2S module. This 3s 18650 charger module is ideal for 3S pack, power tool battery projects.
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Features:
- 3S 4A Step Up Boost Lithium Battery Charger Module for charging
- 4A charge current charges 3S packs twice as fast as 2A modules
- Triple protection: overcharge, overcurrent, and short-circuit onboard
- LED indicators show active charging and full-charge completion clearly
Technical Specifications:
Applications:
- Charging 3S 18650 Li-ion pack via standard 5V Type-C USB supply
- Maker charges 3S LiPo pack for DIY power tool battery build
- 3S drone LiPo battery pack charging with auto balance protection board
- Battery charger module for series cell balancing lab experiment
Package Includes:
- 1 × 3S 4A Step Up Boost Lithium Battery Charger Module
Nishit Soni –
Bubble wrap packing ensured safety
Shubham Porwal –
Support team was responsive
Divyansh Goyal –
3S 4A charger module delivered stable charging performance and worked perfectly with lithium battery packs.
Ayush Shringi –
Highly recommended for battery projects
Ronak Singh –
Same day dispatch service
Deepanshu Mehra –
Genuine quality, COD availability, and secure packaging made this an excellent purchase for projects.
Akasha Patni –
Genuine quality product