More about Battery Doubler
You can download the 1.2.1 version of Battery Doubler from this website. It's a trial edition created by Dachshund Software for $25. This program belongs to Battery in the System Utilities category. The site is user-oriented so you can can use the version 1.2.1 of the software for your Windows XP/Vista/7/8/8.1/10. The most popular installer name for this tool is Battery Doubler.exe.