Stanley 1200 Peak Amp Lithium Jump Starter with USB & Case (LJ12FC)
Stanley 1200 Peak Amp Lithium Jump Starter with USB & Case (LJ12FC)
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Stanley FatMax

Stanley 1200 Peak Amp Lithium Jump Starter with USB & Case (LJ12FC)

521 ratings

Key item features

  • Instant Vehicle Start: Delivers 1200 peak amps, capable of instantly starting cars and trucks with engines up to V8 (8-cylinders).
  • Versatile Battery Support: Compatible with AGM, GEL, and WET 12V lead-acid batteries, offering broad application flexibility.
  • Secure Polarity Protection: Provides essential reverse polarity protection, ensuring jumper cables are always connected correctly for safe operation.
  • Device Charging Ports: Features USB-A (15W) and USB-C PD (30W) power in/out ports, suitable for charging a wide range of personal electronic devices.
  • Compact Portable Design: Functions as a portable jump starter and USB power bank, presented in a small, convenient take-along size.
  • Essential Included Accessories: Includes durable powder-coated metal clamps and a practical carrying case for organized storage and easy transport.
  • Integrated Utility Light: Features a bright LED light, providing useful illumination for vehicle repairs and tasks in dark environments.
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Specs

Battery capacity, 1820 mAhAmps, 1200 AAutomotive battery type, Lead Acid BatteryBrand, Stanley FatMaxPower type, BatteryCable length, 24 in

About this item

Product details

The Stanley FATMAX LJ12FC 1200 Peak Amp Lithium Jump Starter, is a portable jump starter and USB power bank in a small take-along size. 1200 peak amps of starting power instantly jump starts cars and trucks up to 8-cylinders. Powder-coated metal clamps are included. The reverse polarity protection assures that jumper cables are connected correctly. The mini powerpack features / USB-A(15W), USB-C PD (30W), Power In & Out. The bright LED light helps with repairs after dark. 1-year warranty. Includes an attractive, handy carrying case.
  • 1200 peak amps: Helps to start cars and trucks up to V8
  • Compatible with AGM, GEL and WET 12V lead-acid batteries
  • Provides reverse polarity protection to assure that jumper cables are connected correctly
  • USB-A(15W), USB-C PD (30W), Power In & Out to charge most devices
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Battery capacity

1820 mAh

Amps

1200 A

Automotive battery type

Lead Acid Battery

Brand

Stanley FatMax

Warranty

Warranty information

1 year limited

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Warnings

Customer ratings & reviews

4.3 out of 5 stars
stars
521 ratings157 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars72% (377)
  2. 4 stars9% (47)
  3. 3 stars4% (20)
  4. 2 stars3% (15)
  5. 1 star12% (62)

Reviews summary

Pros

  • : Compact design makes it simple to operate.
  • : Small enough to store in car trunks or under seats.
  • : Designed for easy carrying and storage in small spaces.
  • : Delivers consistent power to jump start vehicles.
  • : The included hardshell protects and organizes items.
  • : The unit maintains power between uses and runs several devices per battery cycle.
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Showing 1-3 of 157 reviews

Oct 19, 2026
Reviewer name: Christopher
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works like a charm on V6 engine!

Lightweight and easy to use, my 2.5 liter V6 Mazda cranked right up. This thing's a must-have, 5 minutes or less and you're up and running again.

Helpful?0U7B3I1AGVIR17433524042
Oct 18, 2026
Reviewer name: MichaelK
5 out of 5 stars
5 out of 5 stars review

Small but powerful jump starter.

[This review was collected as part of a promotion.] A solid jump starter from a trusted brand. I like the compact design and the convenience of having a portable unit available for emergencies. It's a handy item to keep in the vehicle for peace of mind when dealing with a dead battery. Overall looks like a practical addition to any emergency roadside kit.

Review from Stanley12volt.com
Helpful?0U7B3I1AGVIR17433524042
Oct 20, 2026
Reviewer name: PaulB
5 out of 5 stars
5 out of 5 stars review

Amazing power and super easy to use

[This review was collected as part of a promotion.] Conveniently packed in a carrying case - this powerful jump starter is up for any task. From mowers, to boats, to automobiles (even a diesel) this powerful jump starter pack is designed to meet the challenge and get you back on the road!

Review from Stanley12volt.com
Helpful?0U7B3I1AGVIR17433524042
Current price is $69.39
Price when purchased online
  • Free shipping
  • Free 90-day returns
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