Leyu provides solar charge controllers for managing power between photovoltaic panels and battery systems in off-grid and battery-based solar installations.
The product range includes PWM and MPPT solar charge controllers with different charging currents and battery-system voltages for small and medium-sized solar applications.
Depending on the model, available options include 10A, 15A, 20A, 30A, 40A and 50A charging capacities, with support for 12V, 24V and selected higher-voltage battery systems.
Choose the correct solar controller according to your PV array voltage, battery voltage, charging current, solar panel power and battery type.
A PWM solar charge controller regulates charging between the solar array and battery using pulse-width modulation.
PWM controllers offer a straightforward solution for smaller solar systems where:
PV and battery voltage are appropriately matched
System size is relatively small
Cost and simplicity are important
Leyu OPL Series PWM controllers are available in different charging-current configurations for off-grid applications.
Typical applications:
Small solar systems
Lighting systems
Remote monitoring
RV solar
Small battery charging systems
An MPPT solar charge controller uses maximum power point tracking to manage PV input and convert available solar power for battery charging.
It can be particularly useful where:
PV array voltage is higher than battery voltage
Solar array size is larger
Energy harvesting is an important priority
PV operating voltage varies with environmental conditions
Leyu OPLC Series offers multiple current ratings for different off-grid solar installations.
Typical applications:
Off-grid homes
Larger RV solar systems
Communication sites
Solar monitoring systems
Battery energy systems
Feature | PWM Controller | MPPT Controller |
|---|---|---|
Charging Method | PWM regulation | Maximum power point tracking |
System Design | Simpler | More advanced |
PV Voltage Flexibility | More limited | Higher flexibility |
Typical System Size | Small / basic | Medium or larger |
Cost | Lower | Higher |
Leyu Series | OPL | OPLC |
Neither technology should be selected only by price.
The correct controller depends on:
Solar panel configuration
PV voltage
Battery voltage
Charging current
System power
Environmental conditions
Suitable for smaller solar charging applications with relatively low panel and battery current.
Potential uses include:
Small lighting systems
Remote sensors
Small RV systems
Compact off-grid systems
A 20A controller can support larger PV and battery systems than entry-level 10A models.
Always confirm allowable PV power at the selected battery voltage.
30A controllers are common for medium-sized off-grid systems and can provide a useful balance between system capacity and controller size.
Both PWM and MPPT directions may be available depending on product series.
Higher-current MPPT models can support larger battery-charging systems and higher PV input power.
These controllers are more suitable when:
PV array size is larger
Battery charging current is higher
Higher PV input voltage is required
Widely used in:
RVs
Small off-grid systems
Portable solar
Lighting systems
Suitable for medium-power installations where reduced current can improve system design.
Selected controllers may support higher-voltage battery systems.
Always confirm controller compatibility before connecting a 48V battery bank.
A solar charge controller sits between the photovoltaic array and the battery system.
The basic energy path is:
Solar Panels → Solar Charge Controller → Battery
The controller regulates charging according to the battery and system requirements.
The battery can then supply:
DC loads directly
or
an inverter that converts battery DC power into AC electricity.
A solar charge controller is therefore not the same as an inverter.
The controller manages PV-to-battery charging.
The inverter converts:
Battery DC → AC Power
for AC loads.
Identify whether the system uses:
12V
24V
48V
or another supported battery architecture.
Check:
Open-circuit voltage
Operating voltage
Series/parallel panel configuration
Never exceed the controller's maximum PV input voltage.
Determine the total rated PV wattage connected to the controller.
The controller must be able to handle the expected charging current.
PWM may be sufficient for simpler, well-matched systems.
MPPT should be considered when greater PV voltage flexibility or more advanced power tracking is required.
Battery chemistry and charging settings must match controller capability.
Depending on model, this may include:
Lead-acid
AGM
GEL
Other supported battery profiles
Do not assume all controllers support all battery chemistries.
Confirm:
Ambient temperature
Ventilation
Installation location
Humidity
Enclosure requirements
A solar controller and inverter perform different functions.
Device | Main Function |
|---|---|
Solar Charge Controller | Regulates PV energy into battery charging |
Power Inverter | Converts battery DC power into AC electricity |
Hybrid Inverter | May combine inverter, charger and solar-control functions |
For a complete off-grid system, you may require both:
Solar Charge Controller + Battery + Power Inverter
unless a hybrid product already integrates these functions.
Manage solar charging for standalone battery systems where utility power is unavailable.
Support battery charging from rooftop or portable solar panels.
Manage battery charging for solar-powered lighting and signage.
Support battery-powered monitoring, communication and control equipment.
Provide charge management for residential, agricultural or remote electrical systems.
It regulates the power flowing from solar panels to a battery system and helps manage the battery charging process.
PWM uses a simpler charging-control approach, while MPPT tracks the solar array's maximum power point and generally provides greater PV voltage flexibility.
The controller should be selected according to PV array power, battery voltage and expected charging current. An appropriate design margin should also be considered.
This depends on the controller and PV specifications. An appropriate MPPT controller may support higher PV input voltage while charging a lower-voltage battery, provided all limits are respected.
No. A charge controller manages PV-to-battery charging, while an inverter converts DC electricity into AC power.
Our team can help identify a suitable PWM or MPPT solar charge controller for your system.
