50A 12V/24V/48V PWM Solar Charge Controller

$92.46

| 5 review(s) | Add your review

Low price 50 Amp auto PWM solar charge controller on sale, LCD, intelligent PWM charge mode, automatic identification of 12V/24V/48V, it can display current, voltage, temperature, power, light control time, etc.

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Delivery date: 6-12 days

SKU: ATO-PWM-LS-50

Output Voltage (V) *

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Overview
Specs
Manual
FAQ
Reviews

Overview

50A smart PWM solar charge controller for 12V/24V/48V batteries, auto swich DC 12V/24V.48V, light weight, beautiful appearance and fast heat dissipation.

Features

Automatic identification system voltage 12V/24V or 24V/48V.
50 amp pwm solar charge controller has personalized LCD and two-button operator and page. High-performance PWM three-stage charging.
You can choose to load the control template and set the streetlights in the world at night. 50a PWM solar charge controller comes with overvoltage, short circuit, overload, overcharge, over discharge protection.
12v pwm solar charge controller has accurate temperature compensation, correct charging, and discharging voltages automatically extend battery life.
The default setting can be reset when the 12 volt PWM controller with the parameter set is powered off.
The positive and negative terminals of the input terminal are reversely connected to protect PWM charger.

Circuit Diagram

Specs

Model	ATO-PWM-LS-50
System Voltage	DC 12V/24V, DC 24V/48V,automatically switch
The Max Voltage of The Solar Panel Input	50V (12V/24V), 100V (24V/48V)
Self Los	≤13mA
Max Charge Current	20A
Max Discharge Current	20A
LVD	(9-11V), 21V (18-22V), 42V (36-44V)
LVR	12.6V (11-13.5V), 25.2V (22-27V), 50.4V (44-54V)
Floating Voltage	13.8V (13-15V), 27.6V(26-30V), 55.2V(52-60V)
Increase the Charge	14.4V/28.8V/57.6V, the battery voltage is below 12V/24V/48V, start extra charge for 2 hours
Battery overpressure protection	15V/30V/60V
Input Reverse Connection Protection	Yes
Load Over Current Protection	Yes, every two seconds to restart
Charging Mode	PWM
Temperature Compensation	-24mV℃， -48mV℃， -96-mV℃， relative to 12V/24V/48V System
Operating Temperature	-20℃- +55℃
Terminal Scale	28-10AWG
Waterproof level	IP 32
Product Size	195mm107mm59mm
Weight	850g

Manual

PWM Solar Charge Cotroller User Manual

FAQ

How does the PWM controller control the charging process?

Voltage detection and comparison:
The PWM solar controller continuously monitors the output voltage of the solar panel and the voltage of the battery.
When the output voltage of the solar panel is higher than the charging voltage of the battery, the solar controller needs to take measures to prevent overcharging.
When the output voltage of the solar panel is lower than the charging voltage of the battery, the controller needs to allow charging.
Duty cycle adjustment:
According to the result of voltage detection, the PWM charger adjusts the duty cycle of the square wave signal to control the size of the charging current.
When the charging current needs to be reduced, the controller will reduce the duty cycle; when the charging current needs to be increased, the controller will increase the duty cycle.
Constant current and constant voltage charging:
In the early stage of charging, the PWM solar charger usually adopts a constant current charging mode to charge the battery at a faster rate. At this time, the controller maintains a constant charging current by adjusting the duty cycle.
When the battery is close to full charge, the PWM controller 24v switches to constant voltage charging mode to maintain a constant charging voltage. At this time, the duty cycle will be further adjusted to ensure that the charging current gradually decreases to prevent overcharging.

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Existing reviews

For a basic solar setup, this solar charge controller is a solid pick.

This 50A PWM solar charge controller gets the job done at a budget-friendly price. It’s easy to set up, and the LCD gives all the key info like voltage and current. However, the PWM charging isn’t as efficient as MPPT, so you might lose a bit of power.

From: Owen Jonah | Date: 3/20/2025 7:40 PM