Capacity: N/A
Charging current : 0.5-5A (60W at 12v)
Trickle current: 10% of Charging current
Stop charge current: 10% of Charging current
Charging voltage: 4-23v
Input: 10-28v (15A) must be at least +1v to Battery charge voltage
Output voltage: 2-28v (12v 8.3A)
Output current: 8.3AInput curreny limit: 8A
Price: 36$ (w/o power supply and battery)
DIY case: https://makerworld.com/en/models/931707
VR1 (I chrg) : Charging current adjustment potentiometer
VR2 (V chrg): Charging voltage adjustment potentiometer
VR3 (V Start): Battery start threshold voltage adjustment potentiometer
VR4 (V und): Battery undervoltage protection threshold voltage adjustment potentiometer (needed whe use PC motherboard power control)
VR5 (V out): Output voltage adjustment potentiometer
When the battery voltage drops to the under voltage protection (UVP) setting value when powered by battery, the power supply automatically sends a shutdown command to the motherboard and shuts down according to the delay time set by J6.
Chinese Manual: UPS-1228-CN.pdf
Machine translation to English: UPS-1228-EN.pdf
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