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NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

Q: What is the Mah rating on this device?

The user manual rates it at 99 watt hours and it supports a variable output voltage of between 5 and 20 watts. So, running at 5 volts, your mAH would be 99Wh / 5V = 19.8 Ah * 1000 = 19,800 mAH. At 12 volts, you would have 99 / 12 * 1000 = 8,250 mAH. At 20 volts, 99 / 20 * 1000 = 4,950 mAH. From what I've seen, USB power banks usually use the 5V standard for calculating mAH, so for comparison purposes, this is probably the one you'll want to use. Hope this helps!

Q: What is the correct Noco email for customer support?

support@no.co (That is indeed supposed to read ".co", NOT ".com")

Q: The boost led does not come on after i plugged it into the battery? any help would be appreciated it

Does any other lights flash? I had a short in the alternator and would cause the exclamation icon next to the battery gauge to flash and the boost LED would not come on.

Product ID: 320429699

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Details

Brand
NOCO
Product Dimensions
8.18"D x x
Item Weight
7 Pounds
Amperage
4250 Amps
Peak Output Current
4250 Amps

⚡4250A peak amps for extreme starts

🔋2.7h USB-C Turbo Recharge

🔦500-lumen multi-mode LED flashlight

Description

⚡ Power Up Fast, Stay Safe Always!

POWER BANK ON DEMAND - 60W USB-C PD dual-direction charging keeps your devices and laptop powered wherever you go.
SAFETY MEETS INNOVATION - Upgraded spark-proof & reverse polarity protection with thermal management for worry-free, ultra-safe operation.
LIGHT UP EVERY EMERGENCY - Integrated 500-lumen LED with 7 modes including SOS & strobe—your ultimate roadside companion.
TURBO RECHARGE IN A FLASH - USB-C PD charges fully in 2.7 hours or enough for a jump in just 5 minutes—because downtime is not an option.
EXTREME POWER ZERO COMPROMISE - 4250 amps to jump gas engines up to 10.0L & diesel up to 8.0L—never get stranded again.

The NOCOBoost X GBX155 is a 4250A ultra-safe 12V lithium jump starter designed for gas engines up to 10.0L and diesel engines up to 8.0L. Featuring rapid USB-C turbo charging, advanced spark-proof and reverse polarity protection, and a powerful 500-lumen LED flashlight, it doubles as a 60W portable power bank. Compact and rugged, it delivers up to 18 jump starts per charge, making it an essential tool for professionals who demand reliability and speed on the go.

Specifications

Brand	NOCO
Product Dimensions	8.18"D x 4.84"W x 13.51"H
Item Weight	7 Pounds
Amperage	4250 Amps
Peak Output Current	4250 Amps
Specification Met	energy
Manufacturer	NOCO
UPC	046221200096
Global Trade Identification Number	00046221200096
Automotive Fit Type	Universal Fit
Model	GBX155
Item Weight	7.01 pounds
Item model number	GBX155
Batteries	1 Lithium Ion batteries required.
Exterior	Machined
Manufacturer Part Number	GBX155
OEM Part Number	GBX155
Position	Unknown
Bulb Type	LED
Special Features	4250A 12V Portable Lithium Car Battery Jump Starter Power Pack, 500 Lumen LED Flashlight with Multiple Modes, including SOS., 60-Watt USB-C Power Delivery Technology, Portable Power Bank for USB Devices, Reverse Polarity and Spark-Proof Protection

Have a Question? See What Others Asked

Can i charge a noco boost x gbx155 jump starter with a noco xgc4 56-watt xgc power adapter?

What is the Mah rating on this device?

What is the correct Noco email for customer support?

The boost led does not come on after i plugged it into the battery? any help would be appreciated it

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