Video coming soon
Duke's verdict
Lives in the trunk of every car from the episodes. Starts a V8 with a dead battery, charges a phone, doubles as a flashlight. Florida heat kills batteries in two years — this pays for itself the first time.
Pros
- Starts up to 8L gas / 6L diesel
- Reverse-polarity protection
Cons
- Needs a top-up charge every 3 months
Garage & tools
More in this category
Garage & toolsDuke's pick
Shaker siphon hose for gas
Drain stale gas from an auction car, move fuel from a can into a generator, pump water out of a boat — no mouth, no pump, no batteries. Shake the valve in the tank a couple of times and gravity does the rest. Pocket change for a job otherwise solved with spitting and swearing.
Sep 15, 2026
Paid link