Heavy-duty equipment needs to have a reliable power source. That’s where ULTRAPOWER comes in.

The ULTRAPOWER 931S battery has heavy duty commercial technology with advanced calcium lead alloy that reduces the battery’s water consumption, keeping it to a minimum.

Plus, a thicker plate design with high durability technology gives this battery more cyclic stability, thanks to its ability to resist the damaging effects of vibration.

Your ULTRAPOWER 931s delivers:

  • Long life span
  • Enhanced Power
  • Reliable Performance
  • Improved Safety & Usability

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You deserve (need) a battery designed for heavy duty use.

The ULTRAPOWER 931S is exactly that, with a high performance polyethylene separator with fleece designed specifically for heavy duty equipment.

Even better, the labyrinth cover on these batteries provides a completely maintenance-free battery with a long life span.

For commercial vehicles out on the road, there can’t be a question of reliability – especially during the winter months. The ULTRAPOWER 931s takes the guessing out of it. Drivers can depend on the performance of ULTRAPOWER.


  • CCA @ O degrees F | 950

Get your ULTRAPOWER 931s batteries today!

Our dedicated team of Customer Service members are standing by, ready to answer your questions about our heavy-duty ULTRAPOWER batteries. They’ll get you the info you need, and can even get you a quote or place an order for you.

Reach out to our team today, get better performance tomorrow.