This is a placeholder topic for “Raspberry Pi UPS HAT” comments.
DFRobot Raspberry Pi UPS HAT is an uninterruptable power supply shield for Raspberry Pi. It can provide steady power source to Raspberry Pi for an extended period … read more
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Raspberry Pi UPS HAT (DFR0494)
DFRobot Raspberry Pi UPS HAT is an uninterruptable power supply shield for Raspberry Pi. It can provide steady power source to Raspberry Pi for an extended period … read more
Read more
Do you guys have a snippet of code for i2C connection of this? Do you also have documentation for this product?
Found it here: https://wiki.dfrobot.com/Raspberry_Pi_%20UPS_HAT_SKU_DFR0494
You guys might want to add this.
Thanks Ekin!
My question is about the Li battery.
What is the maximum physical capacity of the battery in mAh and hence its physical dimensions.
Thank you
Anthony
Hi Anthony,
This product does not come with a battery. Any of our LiPo batteries will be compatible:
https://core-electronics.com.au/power-batteries/liion-lipoly.html
Dear Stephen,
Thank you for the reply. I know that the Li battery is not included. Having a look at https://core-electronics.com.au/power-batteries/liion-lipoly.html will the 6000mAh with SKU: CE04381 fit within the confines of the UPS HAT’s space and how does one secure the battery to the PCB?
I have another question about the pinouts of the UPS HAT. We know that the pins on the RPi include the power, ground, data pins, IIC pins and PWM pins. Does the UPS HAT’s pins only connect to the power pins of the RPi?
Thank you
Anthony
Hi Anthony,
There is no maximum capacity in mAh listed for this device. The largest battery that you could comfortably mount on the top of the UPS HAT would be the 4400mAh:
https://core-electronics.com.au/polymer-lithium-ion-battery-4400mah.html
The 6000mAh will be the same footprint as the total board. You could attach it with some double sided tape.
As far as the pin used by the UPS hat, this will connect to the Power and Ground pins, as well as the I2C pins. None of these are ‘used’ though as they are busses, and still accessible via the headers on the top of the UPS HAT.
Hi.
I am looking at the DFRobot UPS Hat for a Home Assistant installation on a RPi 3B.
I understand that the hat sends a shutdown to the OS when the power is off and the battery is < 10%.
What I want to know is if the hat sends a power on signal once power is restored and the battery is at a certain level.
The FAQ says: “The power supply will not be resumed unless the battery power is back up to above 10%.”. But this is ambiguous to me.
Does that mean that a power-on signal will be sent to the main RPi system at this point and therefore the RPI OS will be rebooted?
A number of UPS hats will shut down the RPi but not reboot the RPi once power is restored until a button is manually pressed. I want to avoid that scenario and have the system automatically restart.
Cheers.
My question was answered on the DFRobot product page forum.
The answer is that power cannot be restored automatically once tthe RPi is shut down.
