According to the antivirus report, the app doesn't contain viruses or any kind of malware. Codeswitch is the creator of Battery Widget that is listed among the Tools category. This application was rated 3.9 on Google Play.
The developer rolled out a new version of Battery Widget on Apr 24, 2017 and over 100K users downloaded and installed the app. Advertisements are a part of this application. Samsung and Sony users download the app quite often.
A free .apk installation package of Battery Widget 2.1 is available from Droid Informer and you can have a look at users' reviews on this site. Prepare 3 MB of free space on your device for this app setup package.
Users leave reviews stating that you can notice such a drawback of the app as annoying ads.