Duralast Heavy Duty 31-950
$174.99+ $22.00 refundable core charge
Duralast Heavy Duty commercial batteries
Duralast Heavy Duty Group 4D
Delivered and installed at your home, work, yard or job site anywhere in Dallas–Fort Worth.
$214.99+ $22.00 refundable core charge
Reference retail price, reviewed October 2026. Mobile installation and Texas sales tax are added on your quote. The final price is confirmed before dispatch based on availability, taxes and fees. You pay after installation.
- Group size
- 4D
- Technology
- Heavy-duty commercial
- Cold cranking amps
- 1,000 CCA
- Reserve capacity
- 295 minutes
- Listed warranty
- 1 year
- Part number
- 4D-1000
- Approx. case size
- 20.8 × 8.8 × 9.9 in
Which trucks and equipment use group 4D
Construction equipment, older trucks, buses and large marine engines.
Group size alone does not guarantee a fit. Cranking amps, terminal layout, AGM or flooded construction and any registration needs all matter, so we confirm this battery against your VIN before dispatch.
What your quote includes
- The battery at its retail price (reference $214.99).
- A refundable core charge (reference $22.00), where it applies.
- Mobile delivery and installation labor for your location.
- Texas sales tax.
Questions about this battery
How much does mobile battery replacement cost?
Your total has four parts: the battery’s retail price, a refundable core charge where it applies, installation labor for your vehicle and Texas sales tax. TotalPro batteries are listed from about $119.99, Duralast standard batteries from about $179.99 and Duralast Platinum AGM batteries from about $259.99 before core charge, labor and tax. Labor starts at $90 and depends on how hard the battery is to reach. The battery finder shows the battery price and the labor for your vehicle, and we send the confirmed total before we dispatch. See how pricing works.
When do I pay?
After the battery is installed and the vehicle starts. Nothing is charged before the work is done.
Should I replace all the batteries in my truck at once?
Usually, yes. Batteries in a bank share the load, so one new battery wired to old ones gets overworked and wears out early. We test the bank and recommend replacing it as a set when the others are weak.
My machine is 24 volts. What batteries does it need?
A 24-volt system usually uses two 12-volt batteries, such as two 8Ds, two 4Ds or two Group 31s, wired in series. Both should be replaced together with matching batteries. Send us the machine model or a photo of the battery label and we confirm it.
What warranty comes with the battery?
The warranty depends on the exact battery. Duralast standard batteries are currently listed with a 2-year warranty, Duralast Platinum AGM batteries with 4 years and Duralast Heavy Duty commercial batteries with 1 year. We confirm the warranty terms for your specific battery with your quote and give you the paperwork after installation.
Related batteries
Duralast Heavy Duty 31-750
$154.99+ $22.00 refundable core charge
Duralast Heavy Duty 8D
$286.99+ $60.00 refundable core charge
Need a battery today?
Call (682) 688-3514 or book online. We confirm the exact battery and price before a technician heads your way.