We all can use more battery life on our idevices. What if I told you I could double your battery life. That really gets your attention doesn’t it. Well, there’s a new jailbreak tweak released called BattSaver and it claims to do just that. The developer states if this tweak is used properly it can double your battery life. Battsaver allows the user to customize the battery usage by turning on/off 3G, bluetooth, WIFi, and other battery draining uses. These features can be customized to only come on for example, the 3G will turn off when connected to wifi. If you don’t need the 3G service this could save a lot of battery power. However, if you turn the radio services off you can’t receive phone calls either. So this tweak does have its good …