Features: Version V1.2 removes the seldom-used serial function. Optimised the battery power supply circuit. Power control with low on-resistance improves battery service. UPS Lite is a UPS power supply designing specifically For RPi. This board integrates a fueled meter chip (MAX17040G) with 1000mAh per chip Adopting the thimbled mounting method, it is simple and generous. The actual test standbys time is up to 6 hours (test conditions: open networking, printing power parameters every 2seconds). Specifications: Model: UPS Lite V1.2 UPS Power HAT Board Charging current: 400mA Output voltages: about 5V Output current: 1.3A@5V (without external adapter, only battery power) 2A@5V (when plugging in external adapter) Power measurement accuracy: error ±2% Size：about 65x24mm/2.5X0.9in Package Includes: 1PC Power Mainboard (without battery ) note: Due to the problem of lighting effect, there might be tolerances in product, please understand. Please allow 1cm errors due to measurement.