Quote:
Originally Posted by burnafterreading
you said ALL devices behave like that, and i proved you wrong, and now you're arguing that since your specific devices worked like that then ALL devices on the planet work like that?
it's cool - you made a blanket comment that was incorrect. accept it and carry on  |
I probably should, but...
Your example didn't prove that the device runs on the battery when plugged in. It simply demonstrated that the device will not run without the battery installed. That is a very different thing. There are reasons to do this. Personally, I go with bad design, but as 5thWiggle suggests, it might be a safety feature.
My "all" statement was based on my understanding of how Li-Ion batteries work. They can't be trickle charged. All, and I do mean all, Li-Ion battery chargers will charge the battery to full and then stop. They don't kick in again until the charge level drops below a certain point. That drop will be either because the device is disconnected and used on battery, or due to self discharge. For laptops, the recharge point is usually 95%, but I have one laptop that uses 97%. For phones it recharges when connected at 99%, but, I've never had a phone connected to power for long enough to see if it restarts charging after the battery has self discharged a bit.
Maybe I shouldn't have said all, but because of the above, and that I can't work out how to do it, I feel pretty safe in saying it.