First of all the tweak by name can be indicated as a fake idea or a joke but after looking from a professional prospective it is a tweak which will lock your battery indicator at a very low percentage so that other tweaks similar can be used such as LockInfo, SmartScreen etc.

Well we are not sure because there is no described description in Cydia. It can be useful for proffesional as its availabel for free from the BigBoss repository. For non proffesionals it can be a joke or fooling some one.

Source (iPhoneItalia)