Really hope this helps guys . It worked for me on my old KW88 and now just done this on my LES1 . A guy called " Tony Bunn " introduced this to me about a year ago and although some say apps are fake this worked for me twice . So here we go .
Close down ALL apps etc
Charge to 100% not 99%
Install and run " repair battery life pro from playstore " then close app
Again charge to 100%
Install and run " advanced battey calibrator from playstore " then close app
Again charge to 100% and reboot
Previously my Lemfo Les1 would disharge around 50-60% ? So i never really new what i had . My battery now runs from 100% and discharges at 1-2% .