# Solar lamp control module, 1S, 2S, 3S lithium battery charging

- Page: https://sigmanortec.ro/en/solar-lamp-control-module-1s-2s-3s-lithium-battery-charging
- Price: 60.54 RON
- Availability: In stock; 1-2 zile
- Reference: 9739 · EAN: 5948073527633
- Category: Electronic components > Solar Panels > Solar Controllers
- Specifications: Technology: Lithium Ion; Number of cells: 1S
- Package (shipping data): 0.024 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 05:45 (Europe/Bucharest)

## Description

Control circuit for solar lamps with 1S, 2S or 3S lithium batteries, automatically recognizes the battery voltage and manages the PWM charging from the solar panel. Provides output for the consumer and 3 working modes, light control, time control and permanent on. Includes overcharge, overdischarge and short circuit protection, with LEDs for charging and discharging status.
The control module for solar lamps with 3.7V, 7.4V and 11.1V lithium batteries is an integrated circuit intended for use in solar garden lighting but can also be used in other types of automation, depending on its configuration.
The module automatically recognizes the type of battery connected (1S, 2S or 3S) depending on the input voltage.
It has a solar panel input (its voltage must not exceed 1.5 x Charged Battery Voltage ), battery input and consumer output. The solar panel connects LAST!
There are LED indicators on the board that indicate the charging and discharging status of the battery.
The 4-segment switch sets the module's operating mode by selecting the NO (Normal Open) operating time of the connected consumer, in intervals as follows:
It includes overcharge and overdischarge protection, ensuring stable operation. The board supports three operating modes: light control, time control and permanent open mode. It uses PWM charging mode for safe and reliable operation.
The module monitors and protects the battery from excessive or too low voltages as follows:
- For a 3.7V battery, the full charge voltage is 4.2V, and over-discharge protection activates at 3.2V.
- For a 7.4V battery, the full charge voltage is 8.4V, and the over-discharge protection activates at 6.4V.
- For an 11.1V battery, the full charge voltage is 12.6V, and the over-discharge protection activates at 9.6V.
Specifications:
Input Voltage: ≤30VDC
Maximum Panel Voltage: 19VDC Maximum, Solar Panel, maximum 50% more than the final battery voltage
Charging Mode: PWM
Rated Current: 3A
Maximum panel power: 10W
Protection: Overload, low voltage, over-voltage and short circuit protection
Login:
THE BATTERY IS CONNECTED FIRST! Next comes the consumer and FINALLY THE PANEL!