20A Mppt Solar Panel Battery Regulator Charge Controller Auto Switch 12V 24V Wholesale Free … #4270-Evelyn

$ 12.76

Item Description: Product Features: ISO9001Certified 10A /20A /30Aforyoutochoose Electronic for …

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20a mppt solar panel battery regulator charge controller auto switch 12v 24v wholesale free shipping

Item Description:

Product Features:

  • ISO 9001 Certified
  • 10A /20A /30A for you to choose
  • Electronic for protection
  • Fully automatic operation
  • PWM charge mode(SOC)
  • Micro-controller digital accuracy
  • Suitable for all 12/24VDC lamps
  • Big terminals,big distance between terminals
  • Double digital LED display, numbers equal to timer setting
  • Temperature compensation(with external temperature sensor)


Full consideration to the safety of persons and property has been given when designing the products.
However the incorrect connection may cause the system breakdown or even safety accident. For your 
safety and benefits, the following rules must be complied during the operation.
. Installation of this product shall be tinder the guidance of the professionals in this field. 
. Prevent this controller from water, humidity and insects, to avoid short-circuit. 
. Keep children and incapable persons away from the controller
. Keep the controller away from electrical heater, heating machine and other high temperature electrical 
appliances; avoid the controller suffering from insulation directly. 
. Please check the rated voltage of solar panel, battery, and loads before connection. 12V rated voltage
 is 12V, 24V rated voltage is 24V, 48V rated voltage is 48V. 
. Make sure connections between positive and negative poles of Solar panels, Battery and Loads are correct. 
. The diameter of connecting cable must be matched with the requirements of the current. Do not use thinner
diameter cable, the thinner diameter. The larger resistance, this will cause higher temperature and output power
. The total rated current of solar panel and loads must be smaller than the rated current of the controller. 
. Components of system must be correctly and firmly connected. Prevent the terminals from oxidation and moldy,
 to avoid connection trouble. 
. keep the battery on fill voltage condition. 
. Prevent the battery from over-charging. 
. Prevent the battery from over-discharging. 
. Prevent the battery from reverse charging to solar panels during nights. 
. Reverse Polarity for Protection for Battery
. Reverse Polarity for Protection for Solar Panels
. When the battery voltage is low, the controller will automatically cut off the load from the system. If the voltage of 
battery is back to normal and the load will restart working. 
. Thunder for protection
. According to the battery voltage grade, the controller can automatically set charge-off voltage, the load-off voltage, 
the load- restore voltage. (The parameter is default under 25℃ condition, locked by the CPU procedure, cannot adjust.) 
. The controller will automatically compensate the temperature of the charging voltage according to the changes of 
ambient temperature.
Before connecting to the solar panel, please connect the controller to the battery; do not use solar panel supply power 
to the loads directly. 
Do not use lamplight to charge the solar panel (lamplight is too weak to charge) 
for DC power source to replace the solar panel will cause troubles to controller.
Choose the suitable wire which diameter should not be too small, please refer to the parameter.
When Red LED (CHARGE) is on, battery is charged up strongly; When Red LED is flickering, battery is 
charged up in constant voltage; when Red LED is oft charge off
. When Green LED (LOAD) is on, loads are working; when Green LED (LOAD) is off, loads stop working. 
.Three Colorchanging LED (BATTERY), When light is red, it indicates low voltage, green indicate battery full charged, 
orange indicate normal status. 
Color-changing LED working voltage indicates area: 

Color-changing LED 12V 24V
Red LED 10.5V-11V 21V-22V
Orange LED 10.5~11V-13.7V 21~22V-27.4V
Green LED ≥13.7V ≥ 27.4V


Rated Vo1tae 12V / 24V 
Max Load current 5A 10A 15A 20A 30A 4OA 60A
Input voltage range 12V~20V/24
Charge loop drop
<250mV <250mV <250mV <250mV <250mV <250mV <250mV
Discharge loop drop
<50mV <50mV <50mV <50mV <50mV <50mV <50mV
Full charge cut 1.37V~14.4V/27.4V~28.8V/54.8V~57.6V (data under no load condition)
Low voltage cut 10.5V~11V / 21V~24V 
Temperature compensation -3mV/℃/ccll
No load loss ≤10mV ≤10mV ≤20mV ≤20mV ≤30mV ≤40mV ≤45mV
Efficiency 95%~97% 95%~97% 95%~97% 95%~97% 95%~97% 95%~97% 95%~97%
Max wire area 2.5mm2 2.5mm2 4mm2 6mm2 8mm2 10mm2 12mm2
Ambient temperature -25℃—55℃

Phenomenon:Green LED off, battery indicator LED is red. 
Reason: Low voltage of battery 
A:Cut off the power, disconnect the load; reconnect the load after the charge become normal. 
B:Battery charge problem: Increase the solar panel power or change the battery. 
Phenomenon:Battery indicator LED is orange and Load indicator LED is green, the loads cannot work. 
Reason:Over load or short-circuit causes the controller inner fuse cut off 
Solution: 10-20 minutes after eliminated the malfunction, the fuse will automatically back to working. 
Package Content:
1 x 20A MPPT Solar Charge Controller

Item Pictures:


1) We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW.
2) Payment must be made within 3 days of order.
3) If you can’t checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days.

Related Products:


Country                          Delivery Time
Working Days (not including holiday) 5-7 8-11 12-14 15-19 20-22
Working Days + Saturday + Sunday 5-9 10-15 16-20 21-25 26-30
United States Rate (item arrived) 5 .1% 50.1% 29.6% 10.5% 4.7%
United Kingdom Rate (item arrived) 9.9% 63.2% 19.1% 3.4% 4.4%
Australia Rate (item arrived) 21.4% 50.0% 14.3% 7.2% 7.1%
France Rate (item arrived) 10.5% 28.6% 43.8% 10.1% 7.0%
Germany Rate (item arrived) 11.1% 22.2% 30.3% 20.9% 15.5%
Canada Rate (item arrived) 0.0% 47.1% 31.4% 17.6% 3.9%
Spain Rate (item arrived) 3.5% 25.0% 47.9% 12.9% 10.7%

Item are shipped within 3 business days once full payment is settled.If you can’t get your items in time,please contact to us first,we wil check and solve it for you soon.We will reply your mail within 24 hours normally. sometimes have a little delay due to the weekend or holiday.If you can’t get our mail after 48 hours,please check your spam or contact to us with other mail address.

Return & Warranty:

If item DOA(Dead of Arrival),Buyers Can return it in 14 Days,We will Replace it with New item after we receive DOA item.Please Contact us Before you sent the item back

All item Comes with Basic 3 Month Sellers Warranty,if item defective in 3 Month,We will offer replacement withour extra Charger(including shipping fee)After we Receive the Defective item.
If item Defective after 3 Month,Buyers can still send it back,We will contact suppliers or Manufactory for Warranty.Buyers Might Need pay the Shipping fee For resend the replaced item.


We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.
It is impossible to address issues if we do not know about them!


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Additional Information

Brand Name


Model Number

20A Solar Charge Controller


Solar System Controller

Maximum Current


Rated Voltage