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20A Solar Charge Controller

20A 12 24V auto PWM low self consumption battery charge controller

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Product Details

20A solar charge controller

1.Product introduction of the 20A solar charge controller

CD12/24-20 is a mini type PWM solar charge controller it has plastic material casing,light and compact,with black,silver and blue colour version for your choose,especially designed for small solar systems with the need of a low battery disconnect feature

2.Product parameter (specification) of 20A solar charge controller



Nominal voltage

12/24V auto. switch

Max.Charging current


Battery type





24 months






Gift box

Packing list

1*20A Solar Charge Controller;1*User Manual

3.Product feature and application of 20A solar charge controller 

-3 LED indications: charge status, SOC, LVD, overload/short circuit.

-Maximum 16 sq.mm connecting terminals.

-Fully electronically protected: Panel surge voltage, wrong polarity at panel or battery, overload and short circuit at load.

-The melting fuse of the prodecessor has been replaced by a fully electronically protected circuit.

-Selectable charging model (Gel & Sealed battery type).

-Reverse blocking MOSFET.

-Common positive allows grounding.

-Applicable to AGM,GEL battery. With PV and battery reverse polarity protection, overload protection, short circuit protection function etc.


1 What is the difference between PWM and MPPT charge controller?

"PWM charge controllers rely on an older technology. These controllers work to match the voltage from the solar panels to battery's voltage by pulling down the panel's voltage,  in doing so, it lowers the efficiency of the energy to about 80% of the theoretical maximum.

MPPT is a newer technology designed for extracting maximum energy from the solar panel, by maintaining the highest possible voltage from the panel. It can achieve high efficiency rate of 98%."  

2 How is your quality?

CARSPA has successful implemented ISO9001 and a strict quality control process throughout the production process. In addition, we use ATE testing equipment for testing and we keep test data for as long as 5 years.

3  What's the delivery time?
It depends on your quantity, but usually, 7 days for sample order, 30-45 days for batch order.

4 What is your regular package? 

Our regular package is color box or brown box, then packaged in cartons.  

5 How long will it take to develop a new product?

Usually it takes about 60days to develop a new product.

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