OTR Batteries: Built with Power from the Inside, Out
Written January, 2023

Did You Know? In 1800, Italian physicist Alessandro Volta introduced the first battery. This led to the term “volts” that we still use for batteries today. This invention was the fruition of a series of experiments during the 1790’s of the “electrochemical phenomena.”
Until 1859, the “battery” made of copper and zinc discs stacked together with saltwater-soaked cloth. This “battery” was not rechargeable like the batteries we use today. Since then, the lead-acid battery design has endured over 160 years for the starting of internal combustion engines.
Spec’ing a Battery
When selecting a FleetPride OTR Battery, truck owners must consider several factors. This includes the truck’s make and model, engine specifications, electrical requirements, and operating conditions. The OTR brand offers a comprehensive range of batteries designed to meet various trucking needs. We make the spec’ing process hassle-free and accurate.
There is a time-old question: are more Cold Cranking Amps (CCA) better when spec’ing a battery? The answer is, not necessarily. It is important to consider what type of environment your heavy duty truck is operating in.
Higher CCA provides for increased cranking abilities in harsh, frigid winter environments. Warmer climates prefer lower CCA, as it keeps the battery cooler under harsh temperature demands. When evaluating a battery’s worth, it is important to consider its cycling ability and lifespan.
A few other features to consider are Reserve Capacity (RC) and anchor bonding. Now more than ever, the electrical demand of newer trucks amplifies the importance of RC. Choosing a battery with a higher RC rating serves the purpose of a dual-style battery (starting and deep-cycle) compared to a regular starting battery.
Ensure your peace of mind by preventing your electronics from draining the battery's capacity and causing slow or no-start situations. Anchor bonding provides superior protection against vibration with premium epoxy flooded bonding that anchors elements to the bottom of the container. With grid elements locked in place, these heavier plates mean longer-lasting life for your battery.
Exciting OTR Line-Up
The OTR Group 31 Heavy Duty Truck Battery ensures Expertise Built In™, being constructed with the power from the inside, out. This serves as the heart of the truck’s electrical system. Experience unmatched performance and endurance for class 6-8 semi truck charging systems whether you are driving through hot or cold climates.
These heavy duty batteries ensure smooth vehicle starts, properly supplying power when vehicle electrical loads surpass charging system output. Also, these act as a voltage stabilizer for the electrical system.
OTR “Silver” Flooded Battery
OTR Conventional Flooded (Wet) Battery is the preferred choice when both performance and price are essential. The wet battery can deliver maximum cranking power and deep cycling capabilities. Experience OEM-level quality of performance in moderate climates, providing robust performance at an affordable price point.

Group | Description | New Part | Warranty | CCA | RC |
---|---|---|---|---|---|
31 | Traditional Flooded | OTRS-F31SX | 2 year | 950 | 180 |
31 | Traditional Flooded | OTRS-F31AX | 2 year | 950 | 180 |
31 | Traditional Flooded | OTRS-F31S | 2 year | 750 | 170 |
31 | Traditional Flooded | OTRS-F31A | 2 year | 750 | 170 |
OTR “Gold” ECL Battery
The OTR ECL (Extended Life Cycle) Battery serves as the bridge between AGM and conventional flooded batteries. This heavy-duty battery features glass mat separators, a proprietary negative paste for improved charge acceptance, and a high-density positive paste. With these enhancements, it delivers exceptional durability, cranking ability, and improved cycling performance. Experience a quicker recharge while being maintenance free.

Group | Description | New Part | Warranty | CCA | RC |
---|---|---|---|---|---|
31 | Anchor Bonded ECL | OTRG-ECL31S | 3 year | 700 | 190 |
31 | Anchor Bonded | OTRG-F31SX | 3 year | 950 | 195 |
31 | Anchor Bonded | OTRG-F31AX | 3 year | 950 | 195 |
31 | Anchor Bonded | OTRG-F31S | 3 year | 750 | 180 |
31 | Anchor Bonded | OTRG-F31S | 3 year | 750 | 180 |
OTR “Platinum” AGM Battery
The OTR AGM (Absorbed Glass Mat) Battery contains an electrolyte solution suspended in a glass material separator, accompanied by a valve-regulated vent system. Trade up to the longer-lasting, most powerful battery with exceptional RC, cranking ability, and extreme durability.
Furthermore, AGMs are non-spillable and maintenance-free. The OTRM AGM battery excels at rapid recharging after powering vehicle electronics during repetitive cycling. It delivers long-lasting performance in the most demanding applications.

Group | Description | New Part | Warranty | CCA | RC |
---|---|---|---|---|---|
31 | AGM | OTRP-AGM31SX | 4 year | 925 | 190 |
31 | AGM | OTRP-AGM31S | 4 year | 800 | 180 |
OTR: With Expertise Built In™, stands tall with their exceptional quality and unmatched performance. FleetPride’s OTR brand keeps you on the road with the durability you can count on in a heavy duty battery. Experience for yourself exceptional performance, again and again.
Visit FleetPride.com to learn more about OTR’s battery offerings.
* The forgoing is provided for informational purposes only. Please consult your local FleetPride Heavy Duty Experts to verify the suitability of a part for the intended application.