# Solar charge control module, PWM, RBL-30A, HQ version

- Page: https://sigmanortec.ro/en/solar-charge-control-module-pwm-rbl-30a-hq-version
- Price: 67.17 RON
- Availability: In stock; 1-2 zile
- Reference: 9556 · EAN: 5943987601486
- Category: Electronic components > Solar Panels > Solar Controllers
- Specifications: Maximum Output Current: 30 A; Model: RBL-30A
- Package (shipping data): 0.152 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 06:34 (Europe/Bucharest)

## Description

PWM controller for solar charging between panel and 12-24V battery, HQ version with better components for increased reliability and lifespan. Offers stable charging up to 30A, LCD display for quick monitoring, 2x USB 5V up to 3A for powering devices, plus programmable light mode for automatic consumer start after sunset.
PWM solar charging module, with USB output and LCD display, which acts as a charge control between solar panels and battery.
It features a USB port with 5V output that allows charging of USB devices with up to 3A.
This is the HQ (High Quality) version, other lower quality versions are also available at lower prices, which uses quality components, is more reliable and has a longer lifespan compared to the "Low Quality" models.
There are two main methods of charging a battery using a solar panel: the MPPT method and the PWM method.
This is a PWM controller that acts like an electronic switch between the solar panel and the battery as follows:
- The switch is ON when the battery is discharged. The panel transmits all the energy to the battery.
- The switch enters PWM mode (on and off at variable frequency) when the battery is almost charged and maintains the battery voltage at the absorption voltage.
- The switch is OFF when the battery is fully charged, while the battery voltage drops to the floating voltage.
Using a PWM charging module assumes that the maximum voltage of the panel is close to the maximum voltage of the battery. For example, for a 12V battery, with a charging voltage of 14V, a panel that outputs a VMP (maximum voltage) of 18V can be used. MPPT modules, on the other hand, lower the panel voltage to the battery voltage.
It has a programmable light-dependent operating mode, meaning the consumer will only be turned on after sunset when it is dark and the panels do not generate current, with the consumer turned off during the day when the generated energy will only be used to charge the battery.
Specifications:
Model: RBL-30A
Battery voltage: 12 -24VDC
Charging current: 30A maximum
Discharge current: 10A maximum
Maximum power: 360W at 12V, 720W at 24V
Maximum panel voltage: 48V for 24V battery, 24V for 12V battery
Equalization: 14.4V (Sealed Lead Acid), 14.2V (Gel Battery), 14.6V (Unsealed Lead Acid Battery)
Absorption voltage: 13.7V default, adjustable
Discharge stop: 10.7V default, adjustable
Reconnection to charging: 13V
Light mode trigger voltage: 8V panel voltage
USB output: 2x USB-A, 5V, 3A
Module's own current consumption: <10mA
Operating temperature: -35 - +60 degrees C
Display: Monochrome LCD screen
Protections: Short circuit, open circuit, reverse protection, overload protection
Reverse Current Protection: Dual Mosfet
Dimensions mm: 133.5 x 70 x 35mm
Use:
1. Connect the battery to the module, plus to plus, minus to minus.
2. Connect the panel to the module, plus to plus, minus to minus.
3. Connect the consumer to the module, plus to plus, minus to minus.
When disconnecting, the order of disconnecting the consumer, the panel and the battery must be strictly observed. Disconnecting/Connecting in a different order may damage the module.
Menu:
The module has 3 buttons. One MENU that goes through the different settings, one UP button for increasing the value, one DOWN for decreasing the value.
Display:
Below is the information displayed on the LCD display.
Main Settings:
Parameter | Default value | Adjustable range | Function
Float voltage | 13.7V | 13.3 – 15.0V | Keep the battery fully charged
Download link | 12.6V | 11.0 – 13.5V | Reconnect the load after charging.
Stop downloading | 10.7V | 9.0 – 12.3V | Protects the battery from deep discharge
Load relay | 13.0V | Fixed | Restart battery charging
Load equalization | 14.4 / 14.2 / 14.6V | Fixed on battery type | Equalization charge depending on type
Battery Type:
Code | Battery Type | Equalization voltage | Float voltage
b01 | Gel | 14.2V | 13.7V
b02 | Sealed lead-acid | 14.4V | 13.7V
b03 | Liquid lead-acid | 14.6V | 13.7V
Working Method:
Set | Description
24H | Permanently active load
0H | Task started from sunset to sunrise (automatic)
1–23H | Task started a fixed number of hours after sunset (timer mode)
Manual | Task started/stopped manually from button or menu
Settings:
Action | Button / Combination | Result
Navigation between screens | [MENU] short | Change display (Main → Float → Reconnect → Stop → Work Mode → Battery Type)
Entering edit mode | [MENU] long (5 seconds) | The value starts flashing, ready to be changed.
Change value | [UP] or [DOWN] | Increases or decreases the displayed value.
Save setting and exit | [MENU] long (5 seconds) | Saves the value and returns to normal mode.
Reset to default values | [UP] long (5 seconds) in screens 2–5 | Reset to factory settings
Manual start/stop of the load | Load key (light bulb button) | Enables or disables the load output