The verdict
The Boost Plus GB40 is the best-overall pick — NOCO's flagship lithium jump starter for most cars.
NOCO Boost Plus GB40
Strengths
- +1000A peak UltraSafe lithium-ion
- +Handles 6L gas + 3L diesel engines
- +Most popular jump starter brand
- +Reverse polarity protection
Watch-outs
- −Not for largest diesels (use GB70)
- −Lithium needs occasional topping
- −Premium pricing
How it compares
Best overall. Most popular. Premium price.
Who this is for
At a glance: daily drivers wanting reliable jump starter for sedans and SUVs.
Why you’d buy the NOCO Boost Plus GB40
- 1000A peak UltraSafe lithium-ion.
- Handles 6L gas + 3L diesel engines.
- Most popular jump starter brand.
Why you’d skip it
- Not for largest diesels (use GB70).
- Lithium needs occasional topping.
- Premium pricing.
Rating sources
Our 4.8 score is the average of these published ratings. More about methodology.
