NOCO Boost X GBX45
#10 in Cars and SUVsFull review
For car and small-SUV owners who want a compact pack that refills fast from any USB-C charger. It costs a little more than the GB40 but recharges several times faster.
Amazon $124.95$124.95
The NOCO Boost X GBX45 is the better jump starter overall, rated 3.1 to 2.6. The NOCO Boost X GBX45 leads on value and features. The NOCO Boost GB50 wins on capacity. The NOCO Boost X GBX45 costs $25 less ($124.95 vs $149.95).
NOCO Boost GB50
#12 in Cars and SUVsFull review
For drivers of cars, crossovers and mid-size SUVs who want a proven NOCO pack with headroom over the GB40. Check the GBX55 price first, since it charges far faster for similar money.
Amazon $149.95$149.95
Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the NOCO Boost X GBX45 for value ($124.95 for its size vs $149.95 for its size) and features (manual override, rated to -4 °F, USB-C charging, IP65 vs manual override, rated to -4 °F, USB-C charging, IP65).
- Choose the NOCO Boost GB50 for capacity (35 Wh battery vs 31 Wh battery).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every cars and suvs jump starter; a clear win is highlighted. How we rank explains each one.
| Factor weight | NOCO Boost X GBX45 | NOCO Boost GB50 |
|---|---|---|
| Overall rating | 3.1/5 | 2.6/5 |
| Value 40% | 23 $124.95 for its size | 0 $149.95 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 77 manual override, rated to -4 °F, USB-C charging, IP65 |
| Capacity 15% | 28 31 Wh battery | 38 35 Wh battery |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| NOCO Boost X GBX45 | NOCO Boost GB50 | |
|---|---|---|
| Starting | ||
| Rated engines | 6.5 L gas, 4 L diesel | 7 L gas, 4.5 L diesel |
| Peak amps (maker) | 1,250 A | 1,500 A |
| Voltage | 12 V | 12 V |
| Manual override | Yes | Yes |
| Lowest operating temperature | -4 °F | -4 °F |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity | 31 Wh | 35 Wh |
| USB-C input | 60 W | 10.5 W |
| Recharge time | 0.8 hours | 5 hours |
| USB outputs | USB-C 60 W, USB-A 10 W | USB 10.5 W |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | IP65 |
| Dimensions | 6.83 x 3.28 x 2.08 in | 8.58 x 3.42 x 3.16 in |
| Weight | 2.2 lb | 2.7 lb |
| Warranty | 1 year | 1 year |
| Released | 2021-11 | 2019-04 |