I've got a 25 gal. sprayer for my orchard trees mounted on my Grizzly & realized the battery is under the front rack (which I have a basket mounted to) so hooking up to the battery is going to be a pain. Was thinking of just purchasing another small battery & putting that in the basket when I spray. Any size battery in particular I should get? Run time will be about 45 minutes every 10-14 days so not sure if one kind of battery that's able to be charged between sprays (deep cycle?) is better than another... Any help is appreciated