Two years ago I bought a Yaber(Chinese) 3000A, 23800mAH charger. It works great, it will jump-start an 8L gas or diesel engine, plus has other abilities. Cost= $79.
It has jump-started my MF 135, my Silverado 5.7L V8, my MF 451 perkins diesel, and other vehicles.
The only thing it doesn't do is...