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Item specifics
  • Model Number: 8a lithium
Product Description

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UPS-0528-11 is a DC on a lithium battery, lead-acid battery charging and the design of the UPS power module. When the input DC power supply, the output voltage is the input voltage. When the input DC power supply (or below the battery voltage) is powered by the battery, the battery voltage output =, seamless handoff, realize uninterrupted power supply function. Module output is not constant, the output voltage will vary with the battery voltage (input voltage) changes.


Does not support the 220V AC input


Product features


The input supply voltage range: 5 ~ 28V dc. Please ensure that the input supply voltage is higher than the charging battery cut-off voltage of 1V, otherwise not charge.


The maximum input current: 15A, load current and charging current is greater than 15A, the charge current will be reduced, so that the input current total of not more than 15A


The maximum switching current (output): 15A


Power supply switching time: seamless handoff. Input power down automatically switches to the battery output, and no switching time. When the input voltage is restored, restored automatically to the input power supply


The output does not have the voltage stabilizing function. The output voltage of the voltage stabilizing need, please the other module


No-load input current: 30mA (not connected with the battery and load)


Battery powered the no-load current: 100uA (input power, output no-load)


Rechargeable battery type: lithium battery (1 ~ 6 Series), lead-acid batteries (6V, 12V)


Charging mode: High Efficiency Synchronous Step-Down charging, the charging efficiency higher than 95%


Charging stages: trickle charge (for had put the battery), constant current, constant voltage, full stop, prevent overcharge. For the excessive discharge battery using small current charge to activate the battery, and then to the current charge


Charging voltage: adjustable (must be 1V lower than the input voltage), onboard multi ring precision potentiometer adjustment


The charging current: 0.5-8A adjustable, the default delivery 2A. Onboard multi ring precision potentiometer adjustment


Charging cut-off current: 0.3-1A adjustable, the default delivery 0.3A. Onboard multi ring precision potentiometer adjustment


Powered by battery input and output isolation, electrical feedback to the input without battery


Optional battery undervoltage protection and the power indication module


Working temperature: 20 ~ +85 degree



Pin definition:


1:Vout, output positive, with power load


2:GND, output, with power load


3:GND, the input, the input power supply negative


4:Vin+, the input cathode, the anode input power


5:Bat-, connected with the cathode of the cell


6:Bat+, is connected with the battery anode




VR1: charging cut-off current regulating potentiometer


VR2: charging voltage adjustment potentiometer


VR3: the charging current regulating potentiometer


The indicating lamp:


D1: green input power indicator. The input power supply is normal light, the input power is too low (and battery voltage differential pressure within 1V) when the input power is removed or flicker, than the battery voltage is low arc.


D2: dual color charge indicator lamp. When charging the green light, red light is bright. The input power is removed or not connected with the battery not bright



Packaging Details
  • Unit Type: piece
  • Package Weight: 0.6kg (1.32lb.)
  • Package Size: 5cm x 5cm x 5cm (1.97in x 1.97in x 1.97in)
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Packaging Details
  • Unit Type: piece
  • Package Weight: 0.6kg (1.32lb.)
  • Package Size: 5cm x 5cm x 5cm (1.97in x 1.97in x 1.97in)
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