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Skelstart Engine Start Module Group 31

Original price $975.00 - Original price $975.00
Original price
$975.00 - $975.00
Current price $975.00

Product Benefits:

  • Guareentees your diesel engine will start up instantly in temps as low as -40F, even with dead batteries
  • 1.5X the lifetime of the other batterys in the system by taking the brunt of the load when starting a truck
  • Extends life of starter and alternator by providing adeqate power when normal batteries cannot
  • Saves fuel by ending the need to idle truck at night to ensure battery start up in the morning
  • Ends the need for jump packs and jump start service calls

Product Description:

The most powerful engine start module in the world! Skelstart is designed to maximize the lifespan of your batteries. This group 31 supercapacitor directly powers your starter and alternator, providing reliable starting power every time.
Ideal for use in semi-trucks, heavy equipment, and large vehicles. It can crank even the biggest of engines in the coldest weather conditions, ensuring your truck starts every time, even on a cold start.

Installation Instructions: Click here for a youtube video of how to install!

Cross Reference:

  • Maxwell ultra 18/3100 Engine Start Module part#63979


  • Cold Cranking Amps (CCA): 2130 A
  • Maximum Peak Current (1-sec current): 3829 A
  • Peak Power: 44.7 kW
  • Charged full voltage: 13.5 V
  • Energy: 37 Wh
  • Rated Capacitance: 1360 F
  • Individual Cell Capacitance: 3400 F
  • Charging current: 20 A (max)
  • 2 Year Warranty

Quantity Discounts

Please contact us at for quantity discounts on orders of 20 units or more.


This product comes with a two-year manufacturer warranty.

Cable Connection Style: Threaded Stud Top Connection (Most Common)
Voltage: 12V (Most Common)
SKU 6730109
8 in stock, ready to be shipped
Only 2 left!
Only 2 left!

Customer Reviews

Based on 2 reviews
Forest Redfall
Amazing product!

This is my second Skelstart. The first one performed so well that I purchased another. The first Skelstart eliminated two batteries on my day cab truck and lost around 75 lbs. My truck is able to spin over effortlessly at negative 30 degrees fahrenheit. I'm probably going to get a third for my pickup instead of replacing the batteries.

Michael Flanagan
Works great! Better than maxwell!

I used maxwell start module in my old truck before it eventually gave out. I bought this one a few months ago and it works amazing. It starts my truck immediately!