# Lithium 2S-3S charging module, with balancing, Type-C, voltage booster

- Page: https://sigmanortec.ro/en/lithium-2s-3s-charging-module-with-balancing-type-c-voltage-booster
- Price: 11.31 RON
- Availability: In stock; 1-2 zile
- Reference: 9987 · EAN: 5942456897627
- Category: Electronic components > Modules for Batteries > Charging and Balancing Modules
- Specifications: Technology: Lithium Ion; sway: Yes; Number of cells: 2S; Source Type: high
- Package (shipping data): 0.005 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:37 (Europe/Bucharest)

## Description

Charging module for 2S or 3S Li-ion/LiPo batteries, powered by USB Type-C with support for 5V and QC fast charging. Boosts voltage to 8.4V or 12.6V, offers cell balancing for 2S and adjustable charging current, up to 94% efficiency. Includes overcurrent, overvoltage and short circuit protections, with LED for status and error.
2S and 3S Lithium battery charging module with USB Type-C port power supply that supports both standard 5V charging and QC fast charging. The module converts the input voltage to the appropriate voltage for 2S (8.4V) or 3S (12.6V) batteries and has a balancing function for 2S (3S does not offer the balancing option), ensuring fast charging with settable current by configuring the RISET resistor.
It has an efficiency of up to 94% and integrates multiple protections, making it ideal for projects involving rechargeable lithium batteries.
The module allows for charging current regulation and is equipped with overcurrent, overvoltage, short circuit, as well as input voltage and undervoltage protections. It is configured for 2S (8.4V) by default, but can be easily converted to 3S (12.6V) by removing the resistor and shorting the jumper.
The integrated LED indicates the charging status or a possible error.
The module also offers a temperature monitoring function by adding an external NTC that will stop charging if a certain temperature is exceeded.
IMPORTANT! The supply voltage must be lower than the discharged battery voltage!
Specifications:
Power input: Type-C QC or solder terminals
Power Supply: 5VDC or QC protocol
Compatible battery type: 2S (7.4V) or 3S (11.1V) Li-ion/LiPo
Charging current: Adjustable 0.5A – 1.5A, according to RISET resistor
Maximum power: 15W
2S charging voltage: 8.1V – 8.4V
3S charging voltage: 12.3V – 12.6V (configurable via RVSET)
Charging efficiency: Up to 94%
Cell balance: Yes, only 2S, using BM pin
LED indicators: red (charging), blue (completed or error)
Dimensions: 31 x 15mm
Use:
IMPORTANT! The supply voltage must be lower than the discharged battery voltage!
Connect the "+" and "-" terminals of the battery according to the markings.
For 2S, connect the BM pin between the two cells if the balancing function is desired.
Select package type:
Default set for 2S (8.4V).
For 3S (12.6V): remove the specific resistor and short the ROV point according to the diagram. The 3S configuration requires a QC charger capable of 9V.
Power input:
Uses Type-C port for charging. For 2S, a 5V 2A power supply is sufficient. For 3S, a 9V QC power supply is required.
Alternatively, power it through welded wires ( input voltage must be lower than battery voltage ).
2S: 5VDC
3S: 9VDC
Charging Voltage Setting:
RVSET (Ω)
Voltage per cell
Total for 2S
Total for 3S
1K
4.05V
8.1V
12.15V
68K
4.2V
8.4V
12.6V
120K
4.15V
8.3V
12.45V
NC (not connected)
4.2V (default)
8.4V (default)
12.6V (default)
Charging current setting:
The current is adjustable by replacing the RISET resistor (e.g. 100K = 0.9A).
Formula : ICHG = 90000 / RISET.
RISET (Ω)
Charging current
180K
~500mA
120K
~750mA
100K
~900 mA (default)
68K
~1.3A
47K
~1.9A
30K
~3A
Set upload timeout:
68K = 4 hours, 120K = 12 hours, without resistor = 24 hours.
NTC setting:
Steps to activate NTC:
Replace the original resistor connected to the NTC with an 82KΩ one.
Connect a 100KΩ thermistor (B=4100) as follows: One end connects to the NTC point, the other end connects to ground (GND), usually on the adjacent pad.
Place the physical thermistor on the battery pack to detect the actual temperature during charging.
compound
Recommended value
Internal NTC resistance
82KΩ
External thermistor
100KΩ (B=4100)
Link position
Between the NTC pad and GND
LED Indicator:
Solid red = active charging
Off blue = full charge
Flashing blue = error
Package contents:
1x 2S/3S lithium battery charging board with Type-C input