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Forum Index : Microcontroller and PC projects : Power Failure Chips

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lew247

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Joined: 23/12/2015
Location: United Kingdom
Posts: 1702
Posted: 05:21pm 20 Dec 2018
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A Pi Zero W, and it's been running all day so far
It's got a 3.5A battery so will be perfect to keep it running if there was a short power cut
 
lizby
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Joined: 17/05/2016
Location: United States
Posts: 3470
Posted: 11:41pm 27 Jan 2019
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I got this LIPO charger with battery: https://www.amazon.com/gp/product/B07H3KSBSX/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=1

It ran a raspberry pi zero w for 20 hours and 17 minutes, and the pi started back up when I plugged the charger back in. Price is up $3 since I bought it.
PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed
 
lizby
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Joined: 17/05/2016
Location: United States
Posts: 3470
Posted: 03:31pm 28 Jan 2019
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On a second test, the pi rebooted upon removal of power from the lipo charger. I'll see how long it runs again disconnected from the charger, and then try again with a biggish cap on the pi supply.

21 hours on the second pass; no glitch upon plugging in the module with a flat lipo.
Edited by lizby 2019-01-31
PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed
 
lizby
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Joined: 17/05/2016
Location: United States
Posts: 3470
Posted: 04:07pm 31 Jan 2019
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This 18650 power bank will run a raspberry pi zero w for over 5 hours, and was glitchless in my testing upon power disconnect, but does not recharge (overnight, for instance), when power is applied again with the pi connected, so the pi never starts up again.

Has anyone found one of these large power banks (~20000mAh) which powers a device (pi) while charging, and is glitchless when removing or applying power?Edited by lizby 2019-02-02
PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed
 
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