I bought 1 from Northern tool for 80.00 on sale it worked great.. something like 800cca I started many, many diesel tractors w/ it..
It ended up growing legs.??
I needed 1 real quick while out on the road a few months back & ended up going to Harbor Freight.. I got 1 w/ a coupon that was only 50-60.00.
It hasn't let me down yet.. lots of tractor starting.. built in USB, spot lite & an air compressor..
1 suggestion tho.. buy the BIGGEST ONE u can afford..
I take mine out in the boat w/ me, just in case.. "I" haven't needed it, but I've gotten other boaters out of some real tight spots w/ it..