Duralast/Heavy duty battery

Not Vehicle Specific
Part Number: 31-950
Warranty: 18 MO
In Stock
Not Available
Price: $141.99
Core: $22.00
Total: $163.99
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Features & Benefits

Duralast Heavy Duty Batteries are manufactured with patented grid technology and designed for the demanding CCA and RC ratings of your equipment. Heavy Duty, the best choice for equipment operating under the harshest on and off-road conditions.

  • Patented grid manufacturing technology produces grids engineered to be more efficient for optimal performance
  • Plates are surrounded by a Heavy Duty separator that virtually eliminates internal shorts
  • Solidium™ welds are designed to stop corrosion and prevent premature failure
  • Chemically engineered to provide maintenance free service, resulting in longer life and reduced downtime
Product Details
Part Number: 31-950
Weight: 59.91 lbs
Warranty: 18 MO
Application: Truck
BCI Cold Cranking Amps (CCA): 950
BCI Cold Cranking Amps Value: Tested to BCI Standard
BCI Designation: 31
Battery Height: 240 mm - 9 7/16 in
Battery Length: 330 mm - 13 in
Battery Width: 173 mm - 6 13/16 in
Core Charge Applicable: Yes
Cranking Amps (CA): 1000
EN / DIN Designation: Not Applicable
JIS Designation: Not Applicable
Positive Terminal Side: Left
Post Location: Top Post
Reserve Capacity (min): 195
Voltage: 12
MSDS Information: Click to View
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    Duralast/Battery

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    5

    This review is hidden because you have chosen to ignore Member 280643652. Show DetailsHide Details

    Likely highest quality battery made of this type, far superior to the others Autozone sells

    After this battery came back to full power after sitting for YEARS in storage for the umpteenth time spanning a decade long period, I decided to look up who made it and where it came from. Unlike all other Duralast batteries, this one doesnt carp out on a predictable timeline. Its also not specified that its a starting or deep cycle, but I did the research and can fill in the missing details of this amazing battery.

    * manufactured by Johnson Controls
    * a rebranded Johnson Controls 31-Platinum HD
    * its 950 CCA, not 1000
    * its TECHNICALLY a starting and NOT a deep cycle battery, but...
    -its patented "grid technology" makes this starting batteries plates STRONGER, like a deep cycle
    -performs closer to a deep cycle and will tolerate deep discharges where other staring battery will not


    I've thrown this battery in just about everything from boats to cars to construction equipment and solar arrays and RV's. It has been my "spare power" for longer than a decade. Ive forgotten it so many times and been SURE it would not take a charge, but EVERY time it comes back to full strength. Ive even left it out in the rain for a year and IT STILL took its charge normally and came back to full power!!!

    NOTE: if this battery gets too badly discharged, modern electronic controlled chargers WILL NOT even try to charge the battery and report this battery bad. You HAVE TO use a "dumb" manual charger on a 2 amp setting to bring the battery up from this low state and THEN you may charge with "smart charger".

    Ive owned a lot of batteries and this one ranks at the top right next to my Optima Yellowtop D31 (which is also manufactured by Johnson Controls and sold by Autozone and ive had for the same amount of time as the 31-950)

    Pros: has lasted over 10 years, has always come back to full charge even after being neglected for YEARS, MASSIVE reserve capacity, run high demand loads, runs inverter LONG time

    Cons: Does not have handle or strap to carry

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