maxpower Posted February 15, 2017 Share Posted February 15, 2017 31 minutes ago, johng said: What board is that doing the UPS function ? Its a micro UPS from AA Portable in the US - http://www.batteryspace.com/12VDC-Micro-UPS-battery-backup-board-for-12.8V-LiFePO4-/-12V-SLA-battery.aspx I am told the Shenzhen market place has copied the board but cant find it anywhere. The micro is a Bananapi running the usual and Transmission I am currently working on a Mk2 with lots more storage space. Link to comment Share on other sites More sharing options...
johng Posted February 15, 2017 Share Posted February 15, 2017 Van you confirm it accepts 220v AC input and out puts 5v dc while providing 13-18 volts to charge the battery ? the info on the website unclear to me(says output is whatever input is ?)I'm looking for a (cheap) UPS solution for my raspberry Pi Link to comment Share on other sites More sharing options...
maxpower Posted February 15, 2017 Share Posted February 15, 2017 20 minutes ago, johng said: Van you confirm it accepts 220v AC input and out puts 5v dc while providing 13-18 volts to charge the battery ? the info on the website unclear to me (says output is whatever input is ?) I'm looking for a (cheap) UPS solution for my raspberry Pi The module takes DC only supply which in this case is 15V from an external power pack. The DC supply voltage needs to be above battery voltage to satisfy the charging circuit. The UPS outputs 12v which is then passed to a buck converter to obtain 5v for main board. If you are looking for a cheap 5V UPS solution take a look around Ebay and Chinese electronics markets on the web. Link to comment Share on other sites More sharing options...
johng Posted February 15, 2017 Share Posted February 15, 2017 Ok thanks for that confirmation its not suitable for my needs...pity Link to comment Share on other sites More sharing options...
maxpower Posted February 15, 2017 Share Posted February 15, 2017 3 minutes ago, johng said: Ok thanks for that confirmation its not suitable for my needs...pity I think you need something like this. Feed it with your 220 - 5v adapter http://www.ebay.com/itm/5V-UPS-Power-Diy-Board-Charger-Step-up-DC-DC-Converter-Module-3-7V-Li-ion-LiPo-/282352753274?hash=item41bd891a7a:g:VgIAAOSw4DJYmTkz Link to comment Share on other sites More sharing options...
johng Posted February 15, 2017 Share Posted February 15, 2017 Yes thanks that looks more like the low cost solution i'm looking for :D Link to comment Share on other sites More sharing options...
johng Posted April 1, 2017 Share Posted April 1, 2017 @maxpower So after a long wait on free delivery from China http://www.ebay.com/itm/5V-UPS-Power-Diy-Board-Charger-Step-up-DC-DC-Converter-Module-3-7V-Li-ion-LiPo-/282352753274?hash=item41bd891a7a:g:VgIAAOSw4DJYmTkz 5V UPS Power Diy Board Charger & Step-up DC DC Converter Module 3.7V Li-ion LiPo arrives much smaller than I expected (tiny solder pads) and I slung together with scrap parts and old Samsung phone battery a USB powerbank/charger/UPS that works with the Raspberry PI... most importantly the power is not interrupted when pulling the mains plug ( like most powerbanks do ) they also have a discharge protection module but I didn't order one http://www.ebay.com/itm/3-7V-4-2V-18650-Li-ion-Lithium-Battery-Charger-Over-Discharge-Protection-Module-/272602721327? Excuse my crappy soldering Link to comment Share on other sites More sharing options...
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