Battery board and DC power supply, which are switched by short-circuit cap. Internal control of input current, maximum 20A. Output Voltage 3.6-72V Output Current Adjustable 0.5-20A. Optional configuration is as follows (Customers must confirm). Battery type: For lead-acid batteries and lithium batteries.
Two charging modes are switched by short-circuit cap. And lithium batteries are formed after short-circuit.
Temperature Compensation Charging: There is no temperature compensation by default. It needs external temperature resistance to detect temperature. When the temperature resistance is disconnected, it will be unable to charge the fault. Two power supply modes this function has been cancelled. And ideal diode module can be added.Default power supply for battery board and DC power supply. Two alternative power supply for battery board, parallel scheme for ideal diode. Can reduce the loss of parallel connection of two battery boards.
The shunt resistance is 1.5-3 milliohms. The default panel parameters are 16-72V and the maximum current is 20A. The parameters beyond this will not guarantee the maximum MPPT. The actual parameter configuration requires complex calculation.And the range of voltage and current values affects the accuracy of MPPT. For example, the maximum current is 20A. But the actual use of the maximum is not more than 10A. Then the current for 10A will achieve better accuracy. If you use batteries, you will not change frequently. Suggestions are given to configure module parameters to achieve the best results. Charging time limit: This function is only valid when DC power is input.
And there is no charging time limit by default. There is no charge time limit when the battery is loaded directly. Input and output fuses prevent accidental reciprocal faults. 3, optional overtemperature fan, overtemperature protection 95 degrees.Battery board input and DC power input shall not be reversed. DC power supply shall not be connected to the input port of the battery board (cancelled). Input and output positive and negative poles are forbidden to be connected to each other. Otherwise fuses or even modules will be burnt down.
In high temperature environment and high current and high voltage difference environment. It is necessary to reduce the amount of use!MPPT is only effective when the charging power is greater than the input power. Otherwise it can not achieve the highest energy utilization rate! The maximum power of the battery panel is 450W, but the charging power set is 28.4V10A. No matter how MPPT is set, the output power can not be achieved, just like a big horse cart. Important operation instructions: improper setting is too dangerous to act! Because of the under-voltage protection function of the battery.
If the module is connected to the input power supply and no load is output. It will be considered that the battery is faulty, and there is no output voltage at this time.
So how to adjust the output voltage? The following are several methods for reference.
Inform the shopkeeper (take a message or contact) that the charging voltage and current. This is the simplest way! (especially the setting of charging voltage is complicated). The charging voltage setting method of lead-acid batteries, input power on.Output is 0 at this time, and indicator flashes. Connect the output to a 12V battery or power supply. When the output voltage is stabilized.
There will be an output voltage value, and a load of 3-10Omega will be connected to the output. At this time, the output voltage will rise. Note that the current value is set for the output.
The output voltage potentiometer is then adjusted until the desired voltage is obtained. The charging voltage setting method of lithium battery: input power on, output is 0 at this time. When the output voltage is stable. There will be an output voltage value.
Maximum charging current regulation: after adjusting the voltage, connect the low resistance load resistance or battery with insufficient power supply, clockwise increase the output current. Reasons for module not charging. Battery has completed charging battery undervoltage failure charging time overtime. (if set this function) invalid battery temperature (if set this function).
Reasons for flashing failure indicator: Battery under-voltage invalid temperature charging. 3, status indicator: 3.5 seconds flashing once is the fault signal, 3.5 seconds flashing once is. The normal charging, and always on for charging completion or constant voltage charging. Phase 0: Trickle current charging, charging at 20-30% of the maximum charging current set. Until the battery voltage is 70% higher than the set charging voltage.
Stage 1: Constant current charging, charging with the maximum charging current set. Until the battery voltage is 98% higher than the set charging voltage. Stage 2: Constant voltage, charging with the set charging voltage until the charging current is. Stage 3: Reduce the constant voltage. After charging stage 2, the charging voltage is reduced.To 95% (95% can be changed). At this time, the battery voltage is larger than the actual charging. Voltage and used to stop charging until the battery voltage is lower than 95% or the charging. Current is greater than C/5. Phase 0-3 is suitable for lead-acid battery charging, and phase 0-2 is suitable for lithium. The item "Solar MPPT Charger DC-DC Buck-Boost Power Supply LT8490 Lithium Battery 75V/20A" is in sale since Thursday, September 5, 2019. This item is in the category "Sound & Vision\Home Audio & HiFi Separates\Amplifiers & Pre-Amps". The seller is "saida*technology" and is located in .
This item can be shipped worldwide.