MISSION-CRITICAL
STARTING POWER
Your craft starts—
every single time.
Proprietary supercapacitor technology delivers full cranking power—even with a completely dead battery.
MISSION-CRITICAL
STARTING POWER
Your craft starts—
every single time.
Proprietary supercapacitor technology delivers full cranking power—even with a completely dead battery.
Instant Start Power
Full cranking power when your battery is discharged. No jump-starts. No delays. Your engine cranks every time you turn the key.
Extreme Temperature Performance
Operates from -40°F to 149°F. When lead-acid batteries lose 50% capacity in cold weather, supercapacitors deliver consistent power.
1 Million+ Cycles
Lasts 1 million+ cycles. That’s 2,000x longer than traditional batteries. Eliminate replacement logistics and reduce maintenance burden.The Problem with Battery-Only Systems
Lead-acid batteries fail after 300-500 cycles. They lose capacity in extreme temperatures. And they die unpredictably—usually at the worst possible moment.
The mission impact:
- Training exercises delayed.
- Pre-deployment operations aborted
- Emergency response degraded
- Maintenance hours reduced
Auxiliary Power That Never Fails
BoatStartPlus works alongside your existing battery—not as a replacement. Your battery continues powering accessories and electronics. BoatStartPlus guarantees starting power.
?
WHAT
IT IS
A supercapacitor energy storage system that delivers massive cranking power instantly. Unlike batteries, it stores energy in capacitor cells—not through chemical reactions that will fail.
?
WHAT
DOES IT DO
Provides up to 42kW of starting power, enough to crank engines up to 7 liters. Recharges completely in 30 seconds from any 12V source. Works in any weather, any temperature.
3-Year Full Warranty
Because we stand behind our technology
Built for Naval Operations
Technical Validation
Documented -40°F to 149°F operation with complete technical documentation for naval spec compliance.
Marine Tested
Corrosion-resistant construction validated in saltwater conditions and high-vibration applications.
System Integration
Compatible with existing 12V electrical systems. Works with the current battery configuration.
Performance Data
Comprehensive specs and test results available for formal evaluation protocols.
Test BoatStartPlus at Your Command
We’re providing evaluation units to NSWC, NSW, and PEO commands for operational validation.
Unit configured for your craft
Performance documentation
Installation support
Engineering team access
Request Your Evaluation Unit*
BoatStartPlus™ Product Specification
| Specification | Value |
| Power Output | 42.05 kW maximum |
| Operating Voltage | 7-14.5 Volts DC |
| Capacitance | 240F (Farad) |
| Internal Resistance | 0.0026 Ohms |
| Cycle Life | >1,000,000 cycles |
| Emergy Storage | 19.4 kJ (operating window) |
| Recharge Time | >30 seconds |
| Operating Temperature | -40°F to 149°F (-40°C to 65°C) |
| Dimensions | 14.25” × 10.25” × 6.25 |
| Weight | 8 lbs (3.62 kg) |
Key Features
- Works with lead-acid and lithium battery systems
- No maintenance required
- Automatic charging during engine operation
- Emergency start button for deeply discharged batteries
- Twin engine applications
| Specification | Value |
| Engine Compatibility | Up to 7L displacement |
| Installation Distance | Up to 20 feet from engine |
| Mounting | Any orientation |
| Voltage Limits | 15V max, 0V min |
| Current Leakage | 4.5mA @ 15V |
| Storage Temperature | -40°F to 158°F (-40°C to 70°C) |
| Warranty | 3 years (supercapacitor module) |
| 1 year (other components) | |
| Origin | Made in USA |
Starting Power for Large and Small Vessel Applications
BoatStartPlus and MKSM Marine Supercapacitor Modules
BoatStartPlus is ideal for engines up to 7L, f or engines from 8L-32L , Kold-Ban’s MKSM (Marine KSM) supercapacitor modules deliver industrial-scale reliability in marine environments.
Applications: Patrol craft, workboats, shore power systems, heavy marine equipment.
Proudly Made In The USA
About Kold-Ban International
For decades, Kold-Ban International has been the trusted name in engine starting solutions for commercial fleets, transit systems, and heavy-duty applications. From Northern winters to desert heat, our supercapacitor technology ensures reliable starts when failure isn’t an option. BoatStartPlus brings that same proven reliability to the marine market—commercial-grade performance, sized for recreational boaters.