UPS HAT for Raspberry Pi Uninterruptible Power Supply

With this Waveshare UPS HAT, a Raspberry Pi keeps running from two 18650 cells during a power interruption. When the supplied charger is connected, the cells are charged and the Raspberry Pi is powered at the same time. Voltage, current, power and remaining capacity of the cells can be read continuously via I2C. The batteries are not included.

Important: Use only the supplied 8.4 V charger, other power supplies can destroy the board according to Waveshare. When inserting the cells, watch the WARNING LED: it lights up if cells are reversed, then do not charge. According to Waveshare, use only identical cells of the same brand and do not mix old with new.

Features:

• 40-pin GPIO header passed through, the pins remain usable with the HAT attached
• Measurement of voltage, current, power and remaining capacity via I2C
• Cell protection circuit: overcharge, deep discharge, overcurrent, short circuit and reverse polarity, plus balancing charge
• 5 V regulator with up to 2.5 A continuous current
• 5 V USB output for other boards
• Switch for on and off
• According to Waveshare, charging time about 3 hours, total height with Raspberry Pi 42.05 mm

Application Examples:

• Protecting a Raspberry Pi against power failure
• Shutting down cleanly via script when the cells are low
• Mobile projects with Raspberry Pi

Documentation:

• Waveshare wiki with example program

Technical Data:

• Manufacturer: Waveshare, SKU 18306
• Output voltage: 5 V, up to 2.5 A
• Charger: 8.4 V 2 A, included
• Control bus: I2C, measuring chip INA219
• Cells: 2× 18650 Li-ion 3.7 V, not included
• Dimensions: 56 × 85 mm
• Mounting holes: 3.0 mm
• Weight: 220 g

Scope of Delivery:

• 1× UPS HAT for Raspberry Pi Uninterruptible Power Supply
• 1× charger 8.4 V
• 1× female header 20-pin
• 1× screw set for Raspberry Pi