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Geekworm RPI Power Pack HAT Lithium Battery with Expansion Board

Geekworm RPI Power Pack HAT Lithium Battery with Expansion Board

Battery Power Board for Raspberry Pi, Phone Pad Charging - Red

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SKU: 474779
  • 16.26
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Geekworm RPI Power Pack HAT Lithium Battery with Expansion Board

Geekworm RPI Power Pack HAT Lithium Battery with Expansion Board

US$16.26 0
Due to new airline safety regulations announced by the ICAO, pure power products (e.g. Batteries, Power Banks) are currently not allowed to be shipped by Airline service with the exception of the following 24 countries:
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Please note that any purchases for such items from countries other than these will be cancelled.
This is a power expansion Board especially designed for Raspberry Pi, which enables to use the Raspberry Pi with a moveable power source. It's more convenient to use external 3.7V Lithium battery or 3.7V 18650 Lithium battery;

- Supports I2S Output with Capacity & Voltage Reading Function (provide algorithms and examples)
- Support Raspberry pi or Android & Apple Phone or Pad or other electronic device charging;
- Supports charging while discharging,(Very stable, the maximum output current can up to 1.8A while charging, but the chip heat will become larger. maybe you can place a external heatsilk on clip.)
- With 4 LED power indicator;
- Standard dimension of Raspberry Pi HAT;
- Two power supply modes: GPIO power output and USB power out;
- Removable battery, The external lithium battery requirements: 3.7V lithium battery;

- Built-in power path management, perfect support charging While discharging.
- Intelligent 3-stage charging (trickle, constant current, constant voltage), it can effectively extend the battery life.

- Maximum discharge current: 2A, Maximum charge current: 1.8A;
- Output protection: overcurrent, short circuit, undervoltage protection;
- Input protection: overvoltage, overcharge, undervoltage protection;

I2C test of this board (on raspberry pi ):
1. i2cdetect -y 1 #check if there is a I2C device;
2. i2cdump -y 1 0x62  # (device address) (You can see:0x0A address register default value is 0xC0)
3. i2cset -y 1 0x62 0x0A 0x00  #Wake-up the device I2C function; MODE register address 0x0A set to 0x00 
4. i2cdump -y 1 0x62  #VCELL(cell voltage) address:0x02 - 0x03
PS: 0x62 is the device address of I2C device(power management chip)

How to read the voltage values that saved by chip register?
sudo i2cget -y 1 0x62 0x02 w
get the value 0xf82f;  swap high and low byte to get 0x2ff8;
0x2ff8 converted to decimalism is 12280;
12280 * 305 = 3745400 uV
3745400/1000000 = 3.7454V
PS: 305 is a fixed value (Fix factor value);
How to read the voltage capacity (percentage) estimated by the chip?
# read the integer part of the battery percentage;
sudo i2cget -y 1 0x62 0x4 b
the resulting value is 0x11;
Converted to 10 decimalism is 17, then the remaining capacity is 17%;

#Read the fractional part of the battery percentage:
sudo i2cget -y 1 0x62 0x5 b
the resulting value is 0x95;
Converted to decimalism is 149;
Then the fractional part is 149/256 = 0.58;

So the chip estimated remaining capacity (percentage) is 17.58%.
Quantity1 piece
MaterialPCB + electric component
English Manual / SpecNo
Download Link http://www.raspberrypiwiki.com/index.php/Power_Pack_Pro
Dimensions & Weight
Dimensions 2.64 in x 2.32 in x 0.79 in (6.7 cm x 5.9 cm x 2 cm)
Weight 2.29 oz (65 g)
Packing List
1 x RPI Power Pack HAT Expansion Board 1 x Battery 1 x Screws pack

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Quantity 3+ units 5+ units 10+ units
Rate US$14.56 shipped US$14.51 shipped US$14.46 shipped

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