Check your engine size and charge port first
The GBX45 is rated at 1250 amps, which NOCO lists for gasoline engines as large as 6.5L and diesel engines as large as 4.0L. We recommend it if you want one jump starter that can cover a daily driver plus a second vehicle, since that range reaches most cars, crossovers, and many trucks and SUVs.
Your first check is engine displacement. If your gas engine is larger than 6.5L or your diesel is above 4.0L, this isn't the right rating and you should look at a higher-amp unit instead.
One more thing to confirm before you buy is what you'll charge it from. The GBX45 charges over USB-C Power Delivery, so you'll want a PD-capable source, not an old low-wattage phone brick.
| Product detail | Value to match to your vehicle |
|---|---|
| Product | NOCO Boost GBX45 1250A UltraSafe Jump Starter |
| Model | GBX45 |
| Color | Gray |
| Size | 1250A |
What it will not do
This is a jump starter and a power bank, not a battery charger or a replacement for a failed battery. It gets a discharged battery turning over; it doesn't diagnose why the battery went flat or fix a charging system problem.
We'd also skip the assumption that a deal on a jump starter means anything about the health of your car's battery. A low price here says nothing about whether your battery or alternator needs attention.
The 60-second timer is part of the design, not a fault. It limits each jump attempt to conserve the high-voltage pack, and NOCO rates the unit for up to six jump starts per charge, so a single attempt that times out doesn't mean the unit is out of power.
It starts a car; it does not charge or maintain a battery.
A single timed-out attempt doesn't mean the pack is empty.
A lower price says nothing about your battery's health.
What you pay and what it compares to
- Amazon price
- $99.96
- Customer rating
- 4.5
- Customer reviews
- 15528
- Typical price over 90 days
- $123.42
- Difference
- $23.46 (19 percent)
At $99.96, the GBX45 sits $23.46 under the typical price of $123.42 buyers have seen over the last 90 days, about 19 percent less. That's a real gap against the recent norm rather than a one-off coupon.
For context, the listing is widely bought rather than an unknown quantity. The reviews and rating give you a broad set of buyer experiences to weigh alongside the specs.
Confirm your charging setup and storage space
Plan on USB-C Power Delivery. NOCO says a full recharge takes about 48 minutes over PD, and you can get enough for a jump in five minutes even from empty, so a PD charger is the difference between a quick top-up and a slow one.
The kit includes the clamps, a USB-C cable, and a microfiber bag, so you don't need to source those separately. Just check that the bag and unit fit where you intend to keep them, since a jump starter is only useful if it's in the vehicle when you need it.
Who should buy this jump starter
Buy the GBX45 if your gas engine is 6.5L or smaller or your diesel is 4.0L or smaller, and you want one pack that can also top up a phone or laptop over its USB-C Power Delivery output. The dual-direction charging and the 100-lumen light with seven modes round it out for roadside use.
Skip it if your engine is bigger than those ratings, or if you'd rather have a unit that doubles as a maintainer for a car that sits for long stretches. Those needs point to a different tool, not this one.
Specifications
| Model | GBX45 |
|---|---|
| Color | Gray |
| Size | 1250A |
Guides from the desk
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