STANLEY FATMAX 1200 Peak Amp Jump Starter with 120 PSI Air Compressor, USB-C & USB-A Power

Be prepared for roadside emergencies with the STANLEY FATMAX 1200 Peak Amp Jump Starter, an all-in-one portable power solution designed to jump-start 12 V vehicle batteries, inflate tires, and charge mobile electronics.

Delivering up to 1200 peak amps, this portable jump starter supports 12 V AGM, GEL, and WET lead-acid batteries and is capable of jump-starting vehicles with engines up to a V8. The integrated digital 120 PSI air compressor features AUTOSTOP for controlled tire inflation, while 25 W USB-C PD and 15 W USB-A charging ports provide convenient power for compatible phones, tablets, speakers, and other USB devices.

Compact enough to keep in your vehicle, the STANLEY FATMAX combines essential roadside functions into one portable unit for daily driving, road trips, camping, and emergency preparedness.

Key Features

• 1200 Peak Amp Jump Starter — Provides portable starting power for compatible 12 V vehicles without requiring another vehicle.

• Supports Engines Up to V8 — Designed to jump-start compatible vehicles with engines up to a V8.

• 12 V Battery Compatibility — Works with compatible AGM, GEL, and WET lead-acid vehicle batteries.

• 120 PSI Digital Air Compressor — Built-in compressor provides convenient inflation for vehicle tires, sports equipment, and other compatible inflatables.

• AUTOSTOP Inflation — Helps provide controlled inflation by automatically stopping at the selected pressure.

• Secure Inflation Connection — Locking mechanism helps provide a secure connection during inflation and minimize air leakage.

• 25 W USB-C PD Port — Provides fast, convenient charging for compatible USB-C devices.

• 15 W USB-A Port — Charges compatible phones, tablets, speakers, and other USB-powered electronics.

• Reverse Polarity Alarm — Alerts the user when jumper clamps are connected incorrectly.

• Portable All-in-One Design — Combines vehicle jump-starting, tire inflation, and USB charging in one compact roadside device.

• No Second Vehicle Required — Provides independent jump-starting capability when properly charged and used with a compatible battery.

Specifications

• Brand: STANLEY FATMAX

• Product Type: Portable Jump Starter / Air Compressor / USB Power

• Peak Jump-Starting Power: 1200 A

• Vehicle Battery Voltage: 12 V

• Compatible Battery Types: AGM, GEL, WET

• Maximum Engine Size: Up to V8

• Air Compressor: Digital

• Maximum Air Pressure: 120 PSI

• Compressor AUTOSTOP: Yes

• USB-C Output: 25 W PD

• USB-A Output: 15 W

• Reverse Polarity Alarm: Yes

• Portable Design: Yes

What's Included

• (1) STANLEY FATMAX 1200 Peak Amp Jump Starter

• Built-In 120 PSI Digital Air Compressor

• Built-In Jumper Cables / Clamps

• USB-C Charging Port

• USB-A Charging Port

Ideal For

• Cars

• SUVs

• Trucks

• Compatible 12 V vehicles

• Roadside emergencies

• Dead vehicle batteries

• Low tire pressure

• Tire inflation

• Sports equipment inflation

• Emergency USB device charging

• Road trips

• Camping

• Vehicle emergency kits

Why It Stands Out

The STANLEY FATMAX 1200 Amp Jump Starter combines three useful roadside functions in one portable device: vehicle jump-starting, tire inflation, and USB charging.

Its 1200 peak amp output supports compatible 12 V vehicles with engines up to a V8, while the integrated 120 PSI digital compressor eliminates the need to carry a separate tire inflator. AUTOSTOP helps simplify inflation, and the combination of 25 W USB-C PD and 15 W USB-A outputs adds convenient charging capability for personal electronics.

The built-in reverse polarity alarm also helps identify incorrect jumper-clamp connections before starting the vehicle.

Charging & Maintenance

For optimal performance, keep the jump starter properly charged and ready for emergency use.

• Recharge immediately after each use.

• Recharge the unit overnight after use as recommended.

• When stored and not in use, recharge approximately every 30 days.

• Check the charge level periodically when storing the unit in a vehicle or emergency kit.

Frequently Asked Questions

How powerful is the STANLEY FATMAX jump starter?
It provides up to 1200 peak amps of jump-starting power.

What size engine can it jump-start?
It is designed to jump-start compatible 12 V vehicles with engines up to a V8.

What types of vehicle batteries are compatible?
It supports compatible 12 V AGM, GEL, and WET lead-acid batteries.

Does it include a tire inflator?
Yes. A digital air compressor capable of delivering up to 120 PSI is built into the unit.

Does the air compressor automatically stop?
Yes. The compressor features an AUTOSTOP function for controlled inflation.

Can it charge a smartphone or tablet?
Yes. It includes a 25 W USB-C PD port and a 15 W USB-A port for charging compatible electronic devices.

Does it provide protection against incorrect jumper connections?
Yes. A reverse polarity alarm alerts the user if the jumper clamps are connected incorrectly.

How often should the jump starter be recharged?
The manufacturer guidance provided recommends recharging immediately after use and approximately every 30 days during storage to maintain optimal performance.

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