20A Solar Controller 12V 24V solar panel battery charge controller with timer control for solar home system led lighting 20I

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This items is just for off-grid Solar PV system.
  • For 12V PV system: 21V for Max input,240W Solar Panel.
  • For 24V PV system :42V for Max input,480W Solar Panel.
  • Brand New PWM 20A Solar Charge Controller Panel Regulator 12V 24V
  • The Solar lighting Controller for solar system with automatic lighting control and time functions.
  • The Solar Controller is designed with a microcontroller for automatic lighting control functions.
  • Proven reliability Precise lighting controller PWM battery charging Microcontroller digital accuracy
  • Fully automatic operation 16 field adjustable lighting control options
  • Manual test capability
  • Detects day and night using the PV array
  • Suitable for all 12V /24V lamps
  • Suitable for Seal lead acid battery
  • Temperature compensation
  • Microcontroller digital accuracy
  • PWM Charge mode
  • State of charge (SOC)
  • Temperature compensation with external temperature sensor
  • Detects day and night using the PV array
  • Big terminals and big distance between terminals
  • Short circuit protection
  • Reverse polarity protection
  • Reverse current protection at night
  • Over charging or discharging protection
  • Over load protection
20I Data Sheet:
  • 20I series: 12 VOLT or 12/24 VOLT auto work, 20 AMPS (for PV and load)
  • Equalization voltage: 14.8 Volt
  • Boost voltage: 14.4 Volt
  • Float voltage: 13.6 Volt
  • Low voltage disconnect (LVD) 11.10 Volt
  • Low voltages reconnect (LVR): 12.6 Volt
  • Temperature compensation: -30mv/degree/12V
  • Self-consumption: 6mA maximum
  • Terminals: for wire sizes to 2.5mm^2
  • Temperature: -35degree to +55degree
  • 4 LED indicators
  • PV: Green –charging
  • Battery: Green-Yellow-Red
  • Load: Red –output on
  • Red slow flashing& blinking shows mistakes
  • The fourth double LED shows timers
  • LED indicator:
  • Solar Panel LED:
  • Green ON when solar is charging Battery.
  • Green blink when the syetem over voltage
  • Battery LED:
  • Green ON when battery level in the right range
  • Green Slowly flashing when battery level full
  • Yellow ON when battery level low
  • RED ON when loads cut off.
  • RED ON when the output is on
  • RED slowly flashing when it`s over load
  • (the load amps is 1.24 times of rated current for 60 seconds,or the load amps is 1.5 times of rated current for 5 seconds.)
  • RED blink when the load is short -circuit.
This controller has Light and Timer control Function
Light control:When daylight starts to occur then the light source goes off. Meanwhile the Solar Panels will charge the batteries. when there is no sunlight the garden light will switch on.
Time control:There is an eight hours timer control,that means it will go off when the Lights automatically switch off after 0-15 hours.


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

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We do not issue the refund if:

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  • Your order did not arrive due to exceptional circumstances outside the control of Just another WordPress site (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of https://www.sunzale.com

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


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Please do not send your purchase back to us unless we authorise you to do so.

A few reasons why buy from us:

We try our best to make your shopping experience not only pleasant, seamless and hassle-free, but also secure.

Enjoy flexible international shipping services that currently operate in over 200 countries across the world.

It's okay to change your mind! You can send your order back for a full refund, we've got you covered with our full Buyer protection.

Brand new products are available on a regular basis.

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