If the battery is not charging and is stuck at 1% please try these troubleshooting steps;
Plug the charger into the charging port and shutdown the Chromebook
Press and hold ESC + refresh + power till the screen blinks black.
On the recovery screen that prompts you to insert a flash drive containing OS, press and hold refresh + power while simultaneously unplugging the charger.
Hold down the power button for 2 seconds.
Plug the charger into the charging port.
Hit the power button once, Chromebook will turn on(start booting up). Log in to see if you can see a status on the battery icon, if not try again from step 1.