Disposable stuck at 99% juice

I got a disposable and it’s just been at 99% juice , a friend got the same one and it’s at 90 and we’ve done about the same amount. Tried to look for other posts lol couldn’t find anything just wondering is it possible for the juice display to just not work ? The battery one is working.
And I’m not sure how much it matters but it’s a lost Mary vape , 50k turbo.
If anyone knows about this I’d really appreciate some info !!