Jump to content

Is there such a thing as.....


Recommended Posts

I need to know if there is dc low voltage limit switch. I want to use an external cell phone battery pack as external power to charge an 18650 in a build. The problem I am having, once the external battery gets the 18650 up to 4.2 volts, it shuts off. Which is great. Only it does not come back on and the 18650 drains and shuts off at 3.4v and the camera is dead. I am playing with a 20k mah external, so i should be able to charge the 18650 at least 6 times.

so i need some simple that will open at like 4.1v and then close again at like 3.6v as I believe that will wake the charger back up. I don’t care that this voltage doesn’t top the 18650 off as it can charge to 90% or whatever as often as it wants to. 

Any suggestions? 

 

Link to post
Share on other sites
 
 
 

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...