The controller applies to the solar net division system (independent system). It can control the electrical charge and discharge process automatically. The discharge process of the storage battery has been optimized thus it can increase the lifetime of the storage battery and improve the function of the system. The thorough electronic protection function can keep the controller away from damage when the users install it error or the system is in bug.

What does Solar Charge Controller do?
Solar panels may make power at very high voltage and current. If all that is fed directly to the battery then it
may get overcharged or blast (in extreme cases).

A solar charge controller prevents this from happening. It is is placed in between the solar panels and the
battery bank to regulate the charging (current and voltage) of the batteries through solar.

For example if your solar panels is making 20V and the battery is of 12V then it will make sure that only 12V reaches the battery. It also prevents the reverse flow of current from batteries to the solar panels during night-time.

Basically, without a charge controller it is not possible to safely use solar energy for charging batteries.

Protection Functions
Battery over-charge/discharge protection
Over-current disconnect function
Over-loading disconnect function
Over-temperature protection
Short circuit disconnect function
Reverse polarity protection
Anti-reverse charging on night

There are two types of solar charge controllers available in the market – PWM(Pulse Width Modulation) and MPPT (Maximum Power Point Tracking)

 Difference between PWM and MPPT Solar Charge Controllers

1) PWM is dragging down the voltage of solar panel to the battery voltage.

2) MPPT is the latest technology meant to extract maximum from the solar panel. They operate according to the panel voltage and converts extra voltage of panel into current which increases the output from the solar system.

Here we are assuming that the efficiency from solar panels is 100% which is seldom the case: 
Example: If you are using a 12V, 100W solar panel with battery of 12V then that panel may make 18V during the
time of peak sunshine.

However PWM will only give 12V and 5.56 current to the battery. You will get only 66W(12×5.56) from your 100W panel and the extra 6 Volts will be wasted.

While MPPT will give 12V to the battery but will also increase the current to 8.34 so that you can get full 100W (12×8.34) from the panel.

MPPT charge controller is much more expensive than PWM controller as MPPT charge controller is based on latest technology .But our PWM controller is also very popular and satified with customers as high qulity and its enough for cutomers demand.   

It is up to you to buy either PWM or MPPT based on your budget ,but never order poor quality because it will  cause the batteries to burst.

 Certifications

1. Just call or email to consult any relevant questions any time with our foreign sales .
2. We can also make customized products according to your needs.
3. We provide long-term after-sale service.
4. We will send many new styles every week to our old customers.

 Our Yunnan Yaochuang Energy Development Co., Ltd specializes in solar system research & developing, producing & marketing .

Sale office is located in Kunming, a very beautiful place be named as Flower city, it is near to Thailand, Myanmar, Vietnam, Laos, and we have installed many solar water pump system in those countries, and get high praise.On the other hand,those provinces------Yunnan ,Guizhou,Tibet, three provinces are rich of solar radiation, we set our office in Kunming to dvelop the solar power system in those three provinces.

If have any doubt or want to know further about solar products,please feel free to contact us or send me inquiry .