Hello there Portly,
Thank you for posting your question!
Unfortunately even with all the information I found online about the Lg A380, I was not able to find anything that mentioned the voltage output.
If you are needing a replacement charger, a quick online search will point you in the right direction.
I actually found quite a few to choose from, that start from a buck up to $7.00.
Rocco, AT&T Community Care
Date published: 2016-08-30