From: usenet@dolik.dev   
      
   Computer Nerd Kev  wrote:   
   > Andriy D  wrote:   
   >> The Natural Philosopher  wrote:   
   >>> On 14/03/2024 07:57, Andriy D wrote:   
   >>>> This is exactly my concern - I want this think up&running 24/7/365 and I   
   don't want   
   >>>> it to burn my house down :)   
   >>>> I guess this is where you'd say 'risk' and 'price' are in a inverse   
   relationship ;)   
   >>>> --   
   >>> It is entirely possible to trickle charge a lithium cell at uber low   
   >>> risk, Essentially you want to current limit the supply at at one tenth   
   >>> of the hourly capacity so e,g a 2200mAh celll would need to be charged   
   >>> at no more than 220mA, and voltage limit the charge at 4.2V.   
   >> Majority of the schemes I've found so far suggest use of NiMH cells as   
   >> they are less 'combustive'.   
   >   
   > Indeed, but if the power requirements are low (a Pi Zero without any   
   > power-hungry USB/HDMI connections) then supercaps might be an easier   
   > option. Since then you don't need to worry about over-charging,   
   > which will still wear out NiMH, even if it doesn't then burn your   
   > house down.   
   I had this thought as well, as all I need is to have enough power to   
   cover for a few seconds of a power outage or gracefully shutdown RPi if   
   it's longer than that. Thanks for that link!   
      
   --   
      
   Cheers,   
   \aID   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)