Hi Folks.....I'm a newbee, I've just bought an unfinished custom built gimbal with 2 x iPower 8017-120t fitted and 2 x 5108-120t fitted. I'm going to be using a Canon 1dx with the 16-35mm lens...quite weighty. It doesn't have any battery Should I get the 4s lipos?....appreciate advice....I don't want to penny pinch...want the battery for the job Cheers