2015 Freightliner Cascadia Battery Size & Group
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Quick answer
- BCI Group Size: Group 31
- Cold Cranking Amps (CCA): 950-1000 CCA per battery
- Reserve Capacity (RC): 190-220 minutes per battery
- Battery Type: AGM (Absorbent Glass Mat) recommended
- Terminal Layout: Post (Top Post)
- Physical Dimensions (approximate): 13" L x 6.8" W x 9.5" H
- Battery Setup: Dual-battery setup (two Group 31 batteries)
Replacement battery options
- Interstate: 31-AGM (950 CCA)
- Optima: YELLOWTOP D31A (900 CCA)
- DieHard: Platinum AGM 31 (925 CCA)
- Odyssey: 31-PC2150S (1150 CCA)
- ACDelco: 31-AGM (925 CCA)
AGM vs flooded — which does this vehicle need?
The 2015 Freightliner Cascadia requires AGM (Absorbent Glass Mat) batteries. AGM batteries are more resistant to vibration and provide the high cycling capacity needed for the Cascadia's electrical system. Flooded batteries are not recommended for this application.
Post-installation relearn / reset procedure
After replacing the batteries in a 2015 Freightliner Cascadia, a reset procedure is not typically required. The vehicle's computers will relearn the new battery state of charge on their own. However, it is a good practice to check for any fault codes with a diagnostic scanner after installation.
Signs of a failing battery
- Slow engine crank
- Dimming headlights at idle
- Warning lights on the dash
- Corroded battery terminals
- Swollen or leaking battery case
Common battery issues for this generation
The most common battery issue for this generation of Freightliner Cascadia is premature battery failure due to the high electrical demands of the vehicle. This can be exacerbated by aftermarket accessories or long periods of idling. It is important to use high-quality AGM batteries and to keep them properly charged.
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More specs for the 2015 Freightliner Cascadia
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2015 Freightliner Cascadia Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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