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I just won an action for a Chromebook 11-1101us and noticed the power supply wasn’t coming with it. Everything I read states that it needs a micro B 5.25v 3A charger. I was thinking… I have a PC power supply sitting around that states on it’s side that the 5V line supplies up to 23A. For purely charging purposes, if I splice in a cable to the 5v line, will this be a good way to charge the laptop until I get replacement adapter? UPDATE: 4/27/16 A lot of good answers and a lot to think about… I initially used my PS to USB cable and it was charging my battery. The battery didn’t get hot, just barely warm but I decided it’s too much of a risk after reading that it might blow up my battery. I ended up using a 2.1 amp ipad charger and it worked good… except it took over 24 hours to fully charge from a dead battery.
Hi, Given that the adapter specs state 5.25V and you are supplying +5VDC the charging difference will be minimal. As it is a 3 cell battery that you are charging, this equates to 1.75V per cell with the correct adapter and 1.66V per cell with your supply. Obviously not the optimal charging voltage but it will suffice until you get the correct adapter. A battery will only take as much current as it needs to, to charge. The only way you can put more current into it (overcharging) is to increase the voltage. As long as you do not reverse the +ve and -ve connections on the charging cable that you are making there should be no problem
I would not recommend doing this. First, the cell voltage for Li ion is around 4.0V/cell. Li ion batteries require specific charging levels and currents and if the battery is low you might greatly exceed the charge rate. As you probably know, these batteries can catch fire so over stressing them is a hazard. Wait and get a correct charger. If you have a USB charger rated for 2.1 amps that should work to charge it if the computer is shut down. Check here if you want to know more about charging Li Ion batteries: http://batteryuniversity.com/learn/artic…
