20A 12/24V PWM Solar Charge Controller

Name: 20A 12/24V PWM Solar Charge Controller
Brand: Callsun
SKU: CS-P2420-US
Price: 19.99 USD
Availability: InStock

SKU: CS-P2420-US

$19.99 USD

Shipping calculated at checkout.

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Description

Versatile Battery Compatibility | Supports AGM, GEL, flooded, and lithium batteries with adjustable voltage settings—one controller works across multiple battery chemistries.
Smart Voltage Recognition | Automatically detects 12V or 24V systems for AGM, GEL, and flooded batteries, ensuring optimal charging without manual setup.
Manual Lithium Adjustment | For lithium batteries, voltage parameters can be manually configured, giving advanced users full control and flexibility.
Advanced PWM Charging | Three-stage charging process—equalize, boost, and float—extends lead-acid battery life and improves overall charging efficiency.
Clear LCD Display | Built-in LCD screen shows real-time system status and charging parameters, making monitoring and adjustments simple.
Easy One-Button Setup | Intuitive key operation allows fast configuration and hassle-free daily use, even for beginners.
Industrial-Grade Protection | Comprehensive electrical safeguards against PV reverse polarity, battery wiring errors, short circuits, and over-discharge.
Built for Harsh Environments | Rugged design engineered for long-term RV, off-grid, marine, and outdoor solar systems.

Description Specs Includes Downloads FAQ Reviews

20A 12/24V PWM Solar Charge Controller

✅ Wide Battery Compatibility & Flexible Voltage

Supports AGM, GEL, flooded, and lithium batteries with automatic 12V/24V detection and manual adjustment for lithium.

⚡ Efficient Three-Phase PWM Charging

Enhances battery lifespan and performance through equalize, boost, and float stages.

🔒 User-Friendly LCD & Full Protection

LCD screen for monitoring, with safeguards against connection errors, short circuits, and over-discharge.

🛠 Multiple Output Control Modes

Light control, light + time control, test & debug, manual, and always-on modes.

💡 User-Friendly Interface

Intuitive LCD + keypress operations make setup and management easy.

🔌 5V 1A USB-A Ports

Charge phones, USB fans, lamps, or outdoor cameras.

Connect Battery

→

Connect Solar Panel

→

Connect Load

→

Complete System

Specifications

Key Specs at a Glance Wide Compatibility · Smart Voltage · PWM Charging · Easy Setup · Safe Protection

Controller Specification

Battery System Voltage	12V/24V Auto (FLD/GEL/SEL) Manual (Li)
No-load Loss	8ma (12V), 12ma (24V)
Max Solar Input Voltage	<55Voc
Rated Solar Charge Current	20A
Max Solar Input Powe	340W/12V; 680W/24V
Light Modes	light control(dusk-to-dawn), light + time control, debug mode, manual control, steady-on mode.
Light Control Delay Time	10s
Max Load Output Current	20A
USB Output	5V1A
Operating Temperature	-35ºC ~ +45ºC
IP Protection	IP32
Net Weight	0.196 kg
Operating Altitude	≤3000 meters
Controller Dimension	1227034.5 mm

Battery Parameters

FLD Battery

Equalize Charge Voltage: 14.8V*n

Boost Charge Voltage: 14.6V*n

Float Charge Voltage: 13.8V*n

Boost Charge Recovery Voltage: 13.2V*n

Over-discharge Recovery Voltage: 12.6V*n

Over-discharge Voltage: 12.6V*n

SEL Battery

Equalize Charge Voltage: 14.6V*n

Boost Charge Voltage: 14.4V*n

Float Charge Voltage: 13.8V*n

Boost Charge Recovery Voltage: 13.2V*n

Over-discharge Recovery Voltage: 12.6V*n

Over-discharge Voltage: 12.6V*n

GEL Battery

Equalize Charge Voltage: --

Boost Charge Voltage: 14.2V*n

Float Charge Voltage: 13.8V*n

Boost Charge Recovery Voltage: 13.2V*n

Over-discharge Recovery Voltage: 12.6V*n

Over-discharge Voltage: 12.6V*n

LI Battery

Equalize Charge Voltage: --

Boost Charge Voltage: 14.2V*n(adjustable)

Float Charge Voltage: --

Boost Charge Recovery Voltage: --

Over-discharge Recovery Voltage: --

Over-discharge Voltage: 11V*n(adjustable)

Includes

120A 12/24V PWM Solar Charge Controller ×1

Downloads & View

📄

20A 12/24V PWM Solar Charge Controller User Manual

View Download

FAQ

1. What types of batteries are compatible with this solar charge controller?

This controller supports a wide range of battery types, including AGM, GEL, flooded, and lithium batteries. Users can also adjust voltage settings for added flexibility.

2. Is the controller easy to operate and monitor?

Yes, it features a user-friendly LCD screen that shows system status and parameters, along with intuitive key press operations for easy setup and management.