SunReadFarm EV solar charger

Solar voltage stabilized direct charge uninterrupted, battery synchronous pressure measurement controller


SunReadFarm Technology Co., Ltd established in 2018, is located in Taichung City, Taiwan.
Our company focuses on the R&D, production and sales of controllers for solar regulated charging. A smart solar, mobile EV charging controller with a new architecture.

1. Simple BMS Controller for Solar Stabilized Charging.
2.The battery can be charged up to a single solar voltage stabilized.
3.The normal battery voltage value V1 can be specified, the battery power consumption V1 voltage drops,       the  charging switch is turned on, and the solar voltage stabilizer charges the battery.
4.The solar energy stabilized direct charge is uninterrupted, the battery voltage is detected synchronously,   and the charge reaches the specified normal battery voltage value V1, and the charging is stopped.
5.Charging only when power is consumed_ charging is safer. The voltage difference between the solar voltage regulator and the battery voltage value V1 is sufficient, and the full current can be supplied when charging.
6. The charging method of the controller is fast charging mode, direct charging with the highest efficiency.
7.
100% preferential use of solar energy, suitable for lithium, lead-acid and other types of batteries. It can be used for EV car, car charging generator backup, outdoor power generation.

Applied to lithium battery:          maximum chargeable voltage when connected in series = 4.2 X N
                                                                                                       Normal voltage can be set = 3.7 X N=V1
                         As soon as the normal battery voltage V1 drops, all solar current will be charged
                                                                              Charge up to the specified voltage value, stop charging
                                                                                                       battery full charge stop set=4.2X N -0.1Vtg
                     Solar charging current / lithium battery rechargeable current = 0.1 ~ 0.9 (small value, high safety)

       Equipped with self-developed remote battery voltage detection technology, the controller can synchronize the battery voltage when the voltage is regulated and directly charged. Supports wires up to five meters in length, and the battery can accurately control the voltage to the second decimal place.

Battery two step protection :
  1. Charge the battery not to exceed the chargeable charging voltage, and the battery will not overvoltage.
  2. Charge only when the normal battery voltage is drained The battery is never under pressure.
  3. Therefore, it can reduce the battery DoD and increase the temperature of the battery after high current output. Prolong battery life.Increase the running distance of the equipment.
EX: Solar current 3A is ready. When the accelerator of the EV car accelerates, the battery voltage V1 drops       and the charging switch opens.
       The motor needs 5 amperes. At this time, the solar current 3A is charged into the battery and used first. The battery only needs 2 amperes of current to the motor.
       The smart control of the normal battery voltage value V1+ charging switch can prevent the battery from being in a high-frequency power supply and battery fully charged state when the EV car stops and goes.
       It is easy to damage the battery.
       This solar charging method can provide supplementary power as soon as possible after the battery is discharged. It is better than any solar controller on the market. It is more suitable for use in EV vehicles.


This product has passed the Ce FCc electronic product safety certification, just connect the positive and negative power cords of the solar panel to the controller,Convert it to a suitable charging voltage. Then connect the positive and negative wires of the battery terminal to the controller_easy to install.

The solar energy stabilized direct charge is uninterrupted, and the controller can detect the voltage of the battery synchronously. Therefore, it can control any battery voltage value without overcharging.

SUNREADFARM Technology Co., Ltd. 2021