What's the "best" UPS for a Raspberry Pi 3B?
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The super cheap way is to get this https://www.aliexpress.com/item/10W-3-7V-4-2V-Charger-5V-6V-9V-12V-Discharger-Board-DC-DC-Converter-Boost/32816412117.html
@gohan said in What's the "best" UPS for a Raspberry Pi 3B?:
The super cheap way is to get this https://www.aliexpress.com/item/10W-3-7V-4-2V-Charger-5V-6V-9V-12V-Discharger-Board-DC-DC-Converter-Boost/32816412117.html
Super cheap because it's just a cheap charging ic and a cheap step up, and there's no battery protection. If you rely on battery protection of an eBay/AliExpress lipo it will be a DW01 with undervoltage protection at 2.4V, fast way to kill your battery.
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I use this setup for my RPI running Domoticz, it though requires UTP cable connection to your router, to measure if the router provides IP address or you have powerloss.
Your only cost is how big you need/want your powerbank size... -
Carrying on with the "Super Cheap" theme, I have successfully used two Poundshop Lithium ion batteries. They have a 5V USB input and output which can only be used one side at a time. However, connect the two batteries in parallel (+ve to +ve, and - ve to - ve), and you get 2 charger/discharge circuits, so you can power the micro USB side from a USB 5V supply, and the other USB 5V o/p to the Pi. The cheaper ones (1pound) will supply 800mA, but they also have higher power ones for a bit more, especially as they are sometimes on offer.
Tony -
Carrying on with the "Super Cheap" theme, I have successfully used two Poundshop Lithium ion batteries. They have a 5V USB input and output which can only be used one side at a time. However, connect the two batteries in parallel (+ve to +ve, and - ve to - ve), and you get 2 charger/discharge circuits, so you can power the micro USB side from a USB 5V supply, and the other USB 5V o/p to the Pi. The cheaper ones (1pound) will supply 800mA, but they also have higher power ones for a bit more, especially as they are sometimes on offer.
Tony -
Carrying on with the "Super Cheap" theme, I have successfully used two Poundshop Lithium ion batteries. They have a 5V USB input and output which can only be used one side at a time. However, connect the two batteries in parallel (+ve to +ve, and - ve to - ve), and you get 2 charger/discharge circuits, so you can power the micro USB side from a USB 5V supply, and the other USB 5V o/p to the Pi. The cheaper ones (1pound) will supply 800mA, but they also have higher power ones for a bit more, especially as they are sometimes on offer.
Tony@tony1tf Do you mean this kind of charger?
https://www.aliexpress.com/item/ESP32-ESP32S-For-Wemos-For-Raspberry-Pi-18650-Battery-Charge-Shield-Board-V3-Micro-USB-Port/32843629344.html?spm=2114.search0104.3.8.197d1137ao0RVa&ws_ab_test=searchweb0_0,searchweb201602_5_10152_10065_10151_5711320_10344_10068_10130_10324_10342_10547_10325_10343_10546_10340_10548_10341_10698_10545_10696_10084_5722520_10083_10618_10307_5711220_10059_5722620_5722920_308_5722720_5722820_100031_10103_10624_10623_10622_10621_10620,searchweb201603_36,ppcSwitch_5&algo_expid=63f9de1f-1174-45ff-a9fd-4ebff214ea1b-1&algo_pvid=63f9de1f-1174-45ff-a9fd-4ebff214ea1b&transAbTest=ae803_1&priceBeautifyAB=0 -
@gohan I notice that the silkscreen on the back of the PCB says "5v 4A output" and "3v 1A output", which would seem to contradict the seller's description of the lower amounts you quoted. On the other hand, maybe one is burst mode and the other is continuous?
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@neverdie I have bought the last one in your list (ugeek hat) but not set up on my pi 3 yet.
You can get battery information through i2c and prepare for shutdown when battery is low as explained here
http://www.raspberrypiwiki.com/index.php/Raspi_UPS_HAT_Board@nca78 does this Raspi UPS HAT is able to turn rpi on when power comes back ?
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Designed for Rpi2 & 3, Best UPS I have found is definitively UPS PIco HV3.0B HAT Stack with Battery 450 available under below link.
http://www.pimodulescart.com/shop/item.aspx?itemid=30
It accepts most technologies of batteries and capacities, but with supplied version is good enough to manage supply of RPI3 and HDD running domoticz at least for 1h and if not sufficient will proceed with clean shutdown and automatic restart on main supply is back.
Nice industrial design, including user configurable Leds and button, relay and temperature monitoring with FAN control.
I bought one 2 month ago, and I'm very happy with it.
I have not any incentive nor interest in this product, just to highlight was quickly delivered to me, technical manual is well documented ( not chinese like) and firmware is professionally maintained with a dedicated forum also available.
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@gohan said in What's the "best" UPS for a Raspberry Pi 3B?:
Price is not bad compared to others, but still costs more than a pi3 😅
The pi is mass produced. His UPS is probably produced in small batches. i.e. it's more of a specialty item, which somewhat explains the price.
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OK, I just settled on this: https://smile.amazon.com/gp/product/B00NTQYUA8/ref=od_aui_detailpages00?ie=UTF8&psc=1
$25, surge protection, no lithium, and maybe (?) I'll be able to power the Pi directly from one of the UPS usb power ports.
It seems ridiculous that the Pi still doesnt have a shutdown button. Presently I have to ssl to it and do a "sudo poweroff" before unplugging it. Not exactly convenient!
@neverdie said in What's the "best" UPS for a Raspberry Pi 3B?:
OK, I just settled on this: https://smile.amazon.com/gp/product/B00NTQYUA8/ref=od_aui_detailpages00?ie=UTF8&psc=1
$25, surge protection, no lithium, and maybe (?) I'll be able to power the Pi directly from one of the UPS usb power ports.
It seems ridiculous that the Pi still doesnt have a shutdown button. Presently I have to ssl to it and do a "sudo poweroff" before unplugging it. Not exactly convenient!
I have this installed now. It turns out that the built-in USB power port is enough to power the Raspi3b running Octoprint. :)
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@gohan If I unplug it from the wall (thereby simulating a power failure), it continues to send uninterrupted power over it's built-in USB power port, if that's what you mean. i.e. power failures don't crash the Octopi.
Or did you mean what happens if I switch-off the UPS and then unplug it? i.e. is there a different (longer lasting) circuit powering it's USB power port?
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Has anyone gotten their PiModules UPS PIco to work right or for very long? And is it even compatible with a Pi 3B?
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@gohan said in What's the "best" UPS for a Raspberry Pi 3B?:
anyway 2A is more than enough for a Raspberry
No, I do not think it is enough. They recommend 2.5A PSU for the latest RPI. I have 3A power supply for RPi3B. 2A was not enough, but I must say I have a few bits and bobs attached to my RPi like camera or Z-wave USB module
