Longer runtime
More usable energy for your onboard loads.
KEY BENEFITS
Built to start your engine. Designed to power your comfort.
12V DUAL-PURPOSE LITHIUM
SmartStart 100
Engine starting and onboard power in a compact Group 31 format.
100AhCAPACITY
1.28kWhENERGY
2,400AMAX STARTING CURRENT
NORTH AMERICAN FORMAT
Lightweight Group 31 / 2 × Group 31 design.
ONBOARD COMFORT POWER
Supports hotel functions.
IMPROVED CHARGE ACCEPTANCE
Enhanced rechargeability compared with lead-acid batteries.
VIBRATION-RESISTANT DESIGN
High vibration resistance for commercial-vehicle use.
OUTSTANDING CRANKING POWER
Up to 2,400A maximum starting current.
90% DEPTH OF DISCHARGE
Designed for commercial-vehicle applications.
AUTOMATIC SELF-HEATING
Integrated auto-heating for cold-climate operation.
CAN + BLUETOOTH
Real-time battery monitoring.
BUILT FOR COMMERCIAL TRUCKS
For long-haul trucks, delivery vehicles, hotel functions and demanding onboard equipment.
12V DUAL-PURPOSE LITHIUM
SmartStart 300
Engine starting and onboard power with greater energy capacity in a 2 × Group 31 format.
314AhCAPACITY
4.01kWhENERGY
2,400AMAX STARTING CURRENT
NORTH AMERICAN FORMAT
Lightweight Group 31 / 2 × Group 31 design.
ONBOARD COMFORT POWER
Supports hotel functions.
IMPROVED CHARGE ACCEPTANCE
Enhanced rechargeability compared with lead-acid batteries.
VIBRATION-RESISTANT DESIGN
High vibration resistance for commercial-vehicle use.
OUTSTANDING CRANKING POWER
Up to 2,400A maximum starting current.
90% DEPTH OF DISCHARGE
Designed for commercial-vehicle applications.
AUTOMATIC SELF-HEATING
Integrated auto-heating for cold-climate operation.
CAN + BLUETOOTH
Real-time battery monitoring.
BUILT FOR COMMERCIAL TRUCKS
For long-haul trucks, hotel functions, rough-terrain use and power-hungry equipment with deep-cycling applications.
A simpler approach to onboard power
ONE BATTERY SYSTEM.
STARTING + APU POWER.
One battery system handles engine starting and APU loads.
Eliminates the need for
- Separate battery banks
- Isolators
- Redundant components
High-quality battery modules
Advanced BMS
Temperature management
Side-by-side system comparison
LEAD-ACID VS.
POLAR FOX LITHIUM.
Compare a traditional electric APU battery setup with one dual-purpose lithium system.
| Category |
|
|
|---|---|---|
| Battery type | Lead-acid / AGM | Lithium |
| System design | Split: starter + APU bank | Unified |
| Wiring | Complex | Simplified |
| Usable capacity | ≈50% (400Ah) | 90–100% (400–628Ah) |
| Voltage stability | Poor | Excellent |
| Lifecycle | 2–3 years · 200–300 cycles | 8–10 years · 3,000 cycles |
| Warranty | Limited | 5-year full replacement warranty |
| Replacement over truck life | 3–4 times | 1 time |
| Total battery weight | 500–640 lbs | 120–150 lbs |
Illustrative APU system configurations. Capacity, total battery-bank weight and service life depend on configuration and use. Warranty coverage is subject to its terms.
A complete system redesign.
Real performance under load
STEADIER VOLTAGE.
CONSISTENT PERFORMANCE.
Power for air conditioning, inverters and everyday hotel loads.
Lead-acid / AGM
Voltage sag under load can make the system struggle.
Polar Fox lithium
Stable output helps maintain consistent performance under load.
Voltage through the discharge cycle
- Lithium
- Lead-acid / AGM
Better cooling performance
Steadier power for your air conditioning.
Less system stress
Consistent output for connected equipment.
Charging efficiency & downtime
LESS TIME RECHARGING.
MORE TIME READY.
Two approaches to getting your power back between stops.
A longer charging journey
Traditional lead-acid / AGM
Recharge beginsLonger recharge
- Slow recharge
- Charge rate tapers as the battery fills
- Longer engine runtime to replenish power
Built to get ready sooner
Polar Fox dual-purpose lithium
Recharge beginsReady sooner
- Fast recharge from the alternator
- High charge acceptance
- Ready for the next stop sooner
Charging paths are illustrative, not time-scaled.
REAL TRUCKS. REAL INSTALLATIONS.
INSTALLED ACROSS TRUCK MAKES AND MODELS.
See Polar Fox dual-purpose batteries at work in a range of truck battery compartments and configurations.
POLAR FOX / ENGINEERED WITH EXPERIENCE
BUILT FOR NORTH AMERICA.
PROVEN IN THE FIELD.
Confidence starts long before installation. Polar Fox batteries are backed by a foundation of lithium engineering, commercial-vehicle experience and established manufacturing.
15
YEARS OF LITHIUM & BMS DEVELOPMENT
7
YEARS OF BATTERY PLATFORM EXPERIENCE ON THE ROAD
OEM-level engineering. An established manufacturing and supply chain. Experience built around heavy-duty commercial vehicles.
A COMMERCIAL-VEHICLE FOUNDATION
TESTED FOR THE REAL WORLD
READY FOR DEMANDING CONDITIONS.
Rigorous testing covers extreme cold and heat, high shock and vibration, and high electrical loads — the demanding conditions batteries encounter in commercial vehicles.
TESTING, COMPLIANCE & MANUFACTURING QUALITY
BUILT TO AUTOMOTIVE STANDARDS.
UN 38.3
Lithium battery transport testing
E-Mark
Automotive compliance
IATF 16949
Automotive manufacturing quality
POLAR FOX BATTERY
BUILD YOUR POWER SYSTEM
Talk with Polar Fox about battery selection and installation.
