I have two of these from Harbor Freight.
Battery packI have a third made by Schumacher.
We carry one in our toad most of the time. During the winter, we carry one in each vehicle used.
The Harbor Freight units fits under the passenger seat without any problems. We charge or at least check the charge every month or so.
Harbor Freight has them on special most of the time or you can use there coupon found on line for 20% off. Should be around $40 rather then regular price
Bud
USAF Retired
Pace Arrow
2003 Chev Ice Road Tracker