This power supply will deliver a good 5A and 15V constant. It can be connected to your 110/240v home or workshop power socket. All you need is a common kettle plug, found at PC stores or your local electronics store. (you probably have a spare cord laying around the house already, as its a very common type).
Input: 110/240v 50/60Hz Switchable
Output: 15v and up to 5A
Suitable to be used with Imax E4 LiPo charger