1、Full Protection: This control board has anti backflow, overcharge, and over discharge protection, and the user can customize the constant light or flashing light. 2、Light Interference Resistant: This control board does not turn off the light when the light is on for about 5 seconds with strong light exposure, and automatically turns off the light after 5 seconds. 3、Strong Compatibility: This solar light circuit control board is compatible with lithium iron 2V and LiPo 7V batteries. 4、Low Power Consumption: This solar light circuit board as a whole is designed for low power consumption, charging during the day and automatically lighting up at night. 5、Wide Application: This control board can be used for solar powered yellow flashing lights, warning lights, street signs, street lights, wireless relays, surveillance, billboards and other application scenarios. 1 x Solar Charge Controller Board1 x Instruction Item Type: Solar Charge Controller BoardMaterial: PCBCharging and Discharging Current: 6V Acid Battery: ≤5A12V Acid Battery: ≤5A 3.7V Single Li Polymer: ≤5A 3.2V Single Cell Lithium Iron Phosphate: ≤5ACharge and Discharge Protection:Battery Type Charging Protection  Charge Protection ReleaseDischarge Protection Discharge Protection Release  6V Acid ≈ 7.1V ≈ 6.8V ≈ 5.4V ≈ 6.2V12V Acid ≈ 14.2V ≈ 13. 7V ≈11V ≈ 12.4V 3.7V Single Li Polymer ≈ 4.2V ≈ 3.9V ≈ 3.2V ≈ 3.5V 3.2V Single Cell Lithium Iron Phosphate ≈ 3.6V ≈ 3.4V≈ 2.8V  ≈ 3.2VBattery type indication:After the battery side of the circuit board is powered up, the output side indicates the battery type by flashing light. Flashing once, the board thinks it is a series lithium iron phosphate battery, and runs the program related to a single series lithium iron phosphate battery; flashing twice, the board thinks it is a single series lithium battery, and runs the program related to a single series lithium battery; flashing three times, the board thinks it is a 6V lead-acid battery, and runs the program related to a 6V acid battery; flashing four times, the board thinks it is a 12V acid battery, and runs the program related to a 12V acid battery The program is related to the 12V acid battery. When using, please verify whether the battery is connected wrongly or the circuit board identifies wrongly according to the number of flashing lights at the output. If the battery type prompted by the circuit board does not match the actual battery used, please disconnect the battery immediately and stop using it.Battery Type Identification Voltage Range: 3.2V single series lithium iron identification range is 2.5- 4.0 volts.Identification range for 3.7V single string lithium is 3.0- 4.4 volts. 6.0V acid batteries are identified in the range of 5.0 to 7.5 volts 12.0V acid batteries are identified in the range of 9.0 to 15.0 volts.When the battery end of the circuit board is powered up, the battery voltage needs to be near the standard battery voltage to prevent the program from misidentifying the battery. When assembling the fixture, it needs to detect whether the battery is incorrectly identified, and if it is incorrectly identified it needs to check the battery voltage and ensure that the battery voltage is correct before re powering.