This is another in a long list of apps that conserve your battery power switching off services or allowing you to make hotkeys to turn off services. What is going on with battery power exactly? The reason you may be losing battery power is because you have a lot of apps running simultaneously or even a few high processor usage apps. Juice Defender claims to extend battery life which is true in a way, but not a reason to download the app.
The reason you would want to download this app is because of their preset modes that help you manage WiFi, Mobile Data and CPU speed. The settings are nice because you can choose to run at full mode when you want to and switch over to less battery draining settings when you are done.
Juice Defender is a free and feature limited version of UltimateJuice. If you are looking for a power management app then Juice Defender is one you should be safe trying. If you don’t like it, there are plenty of others to try. Not only will they help you fight free radicals, but they may also help lower your risk of heart disease and Type 2 diabetes.