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NOCO Boost Plus GB40 Jump Starter vs Noco Boost X GBX45

The GBX45 is the stronger jump starter: 1,250 amps, 6.5L gas and 4.0L diesel coverage, USB-C Power Delivery, and a 60-second timer that keeps power in reserve. The GB40 is smaller and lighter, holds its charge up to a year, and has a long track record with owners who keep it in the glovebox. Buy the GBX45 for larger engines and fast USB-C charging; buy the GB40 for a simple, proven pack for cars and small diesels.

  • Choose the NOCO Boost Plus GB40 if you drive a car, SUV, or small diesel and want a proven, glovebox-sized pack that holds charge for up to a year.
  • Choose the Noco Boost X GBX45 if you need to start larger gas or diesel engines or want USB-C fast charging and recharge.

Prices

  • NOCO Boost Plus GB40 Jump Starter: $99.95 at Walmart (last seen Nov 8)
  • Noco Boost X GBX45: $119.99 at eBay (checked today)
  • Difference: the NOCO Boost Plus GB40 Jump Starter is $20.04 cheaper than the Noco Boost X GBX45 at the latest prices (Nov 8 and Nov 10)
NOCO
NOCO Boost Plus GB40 Jump Starter

NOCO Boost Plus GB40 Jump Starter

4.6(1,983 ratings)
$99.95at WalmartChecked Nov 8
See all prices and details
Visit Walmart
Pros
  • Proven design with a large base of owner reviews
  • Up to 20 jump starts per charge
  • Holds charge for up to a year
  • IP65 rated and small enough for a glovebox
Cons
  • Only 1,000 amps and 3.0L diesel coverage
  • Micro USB charging is slow
  • No USB-C or laptop charging
Noco
Noco Boost X GBX45

Noco Boost X GBX45

4.2(5 ratings)
$119.99at eBayChecked 2 h ago
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • 1,250 amps and 4.0L diesel coverage
  • USB-C Power Delivery in and out, 60W output
  • Recharges fully in about 48 minutes
  • UltraSafe 2.0 with a 60-second power timer
Cons
  • About 6 jump starts per charge at full power
  • 1-year limited warranty
  • Heavier duty clamps are bulkier to store

What separates them

NOCO Boost Plus GB40 Jump StarterNoco Boost X GBX45
Peak amps1,000 amps1,250 amps
Engine coverageGas up to 6.0L, diesel up to 3.0LGas up to 6.5L, diesel up to 4.0L
Jump starts per chargeUp to 20Up to 6 at full power, with a 60-second timer
RechargeMicro USB, slowUSB-C Power Delivery, full charge in about 48 minutes
Power bank outputUSB-A for phones and tablets60W USB-C, can charge laptops
Size and weight7.75 x 3.25 x 1.75 in, about 2.6 lb6.83 x 3.28 x 2.08 in, about 2.16 lb
Battery capacity24 Wh, 2150 mAh31 Wh, 2584 mAh
Safety techUltraSafe: spark-proof, reverse polarity protectionUltraSafe 2.0 with better thermal management

Price history

$124.95$99.95
Oct 28Nov 10
  • NOCO Boost Plus GB40 Jump Starter: lowest $99.95 on Oct 28 at Micro Center; $99.95 on Nov 8.
  • Noco Boost X GBX45: lowest $119.99 on Nov 10 at eBay.

Prices at every store

NOCO Boost Plus GB40 Jump Starter

  • WalmartNew

    In stock

    $99.95Free shippingChecked Nov 8
    Visit Walmart
  • Home DepotNew

    In stock

    $99.95Free shippingChecked Nov 8
    Visit Home Depot
  • Micro CenterNew

    In stock

    $99.95Checked Nov 8
    Visit Micro Center
  • Best BuyNew

    Availability unknown

    $99.95Checked Oct 30
    Visit Best Buy

Also available at

  • eBayCheck price at eBay
  • WalmartCheck price at Walmart
  • Bulldog Battery, Inc.Check price at Bulldog Battery, Inc.

Store links may earn us a commission.

All 8 stores and price history →

Noco Boost X GBX45

  • WalmartNew

    In stock

    $124.95Free shippingChecked 2 h ago
    Visit Walmart
  • DuroMax Power EquipmentNew

    In stock

    $124.95+ $12.95 shippingChecked 2 h ago
    Visit DuroMax Power Equipment
  • eBayNew

    Availability unknown

    $119.99Checked 2 h ago
    Visit eBay
  • Best BuyNew

    Availability unknown

    $124.95Checked 2 h ago
    Visit Best Buy

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission.

All 19 stores and price history →

Specs compared

SpecNOCO Boost Plus GB40 Jump StarterNoco Boost X GBX45
Dimensions7-3/4"L x 3-1/4"W x 1-3/4"D6.83 x 3.28 x 2.08 in
Battery capacity2150 mAh2584 mAh
Weight1200 g2.16 lb
colorGrayGray
Jump-start current1,000-amps—
Gasoline engine sizeUp to 6.0L—
Diesel engine sizeUp to 3.0L—
Jump starts per chargeUp to 20 jump starts—
Battery typelithium-ion—
Flashlight brightness100-lumen—
Power capacity24 Wh—
IP ratingIP65—
Show all 36 specsShow fewer specs
SpecNOCO Boost Plus GB40 Jump StarterNoco Boost X GBX45
size1000A—
Peak current—1250A
Petrol engine rating—6.5L
Diesel engine rating—4L
Internal battery—Lithium Ion
LED lumens—100L
Capacity—31 Wh
Operating temperature—4ºF to 122ºF
Charging temperature—32°F to 104°F
Protection type (IP code)

What reviewers say

NOCO Boost Plus GB40 Jump Starter

  • 4.6 / 51,983 ratings

With 4.6 out of 5 from 1,983 ratings, owners mostly report it does exactly what it is supposed to do. Some used it during a blackout to charge devices and provide light.

What people mention
  • Starting powerPraisedOwners say it starts dead batteries as advertised.
  • Safety clampsPraisedSpark-proof, reverse-polarity protection makes hookup mistake-proof.
  • SizePraisedSmall enough to keep in the glovebox or trunk.
  • Diesel limitsCriticisedOnly rated for diesel engines up to 3.0L.

Noco Boost X GBX45

Owners of the GBX45 generally praise its small size, easy clamps and ability to start cars that have sat for months. Some report it struggles in very cold weather or on larger engines, and a few find the short cables awkward.

What people mention
  • Starting powerPraisedOwners say it fires up cars and SUVs that have been sitting for weeks.
  • Cold weatherCriticisedSeveral report weaker starts in freezing temperatures.
  • SizePraisedBuyers like that it fits in a glovebox or door pocket.
  • USB-C chargingPraisedThe 60W port recharges the pack fast and tops up phones and laptops.
Reviews
  • The Best Portable Jump Starter Can Amp a Dead Land Cruiser 15 Times

Questions and answers

Which is better for a diesel truck?
The GBX45. It is rated for diesel engines up to 4.0L, while the GB40 tops out at 3.0L. For a full-size diesel, check your engine size against that rating.
Which one lasts longer between charges?
The GB40 holds its charge for up to a year and does up to 20 jumps per charge. The GBX45 does about 6 jumps at full power and its timer conserves energy, but it needs topping up more often.
Is the GBX45 worth stepping up to?
Yes if you have a larger engine or want USB-C fast charging and laptop charging. The GB40 is enough for most cars and small diesels.
Can either charge a laptop?
Only the GBX45. Its 60W USB-C port can fast-charge USB-C laptops. The GB40 has a standard USB-A port for phones and tablets.
Are both safe to connect the wrong way?
Yes. Both use NOCO UltraSafe with spark-proof clamps and reverse polarity protection. The GBX45 adds UltraSafe 2.0 with better thermal management.
Do both fit in a glovebox?
The GB40 is the easier fit at 7.75 inches long and about 2.6 lb. The GBX45 is shorter but thicker, so check your glovebox depth.

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—
IP65
Brand—NOCO
Model Number—GBX45
Amperage—1250
Voltage—12V
Compatible Battery Type—Lead acid, Lithium-ion
Charger Type—DC
Auto Shut-Off—true
Product Height—8.23 inches
Product Width—4.96 inches
Product Depth—3.62 inches
Cord Length—1 feet
Overload Protection—true
Warranty - Parts—1 year limited
Warranty - Labor—1 year limited