Military/Navy BoatStartPlus™ Family
Military/Navy BoatStartPlus™ Family
From small tactical craft to multi-engine patrol and support vessels, there’s a BoatStartPlus™ built for your mission. Our proprietary supercapacitor technology installs permanently alongside your existing battery and delivers instant, reliable starting power — on engines from under 7 liters all the way up to 32 liters. One installation. Zero maintenance. Mission-critical equipment that starts every time.
BoatStartPlus™
SKU: MKSM2012
The Original. Perfect for smaller outboards and single-engine boats.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | SPECS | VALUE |
|---|---|---|---|---|---|---|
| 2 | Voltage | 12V | ||||
| 3 | Cells | 20-cell | ||||
| 4 | Capacitance | 240F | ||||
| 5 | Max Power | 42.05 kW | ||||
| 6 | Engine Size | Up to 7L | ||||
| 7 | Internal Resistance | |||||
| 8 | Energy Stored | |||||
| 9 | Dimensions | 14.25" x 10.25" x 6.25" | ||||
| 10 | Weight | 8 lbs | ||||
| 11 | Operating Temp | -40°F to 149°F | ||||
| 12 | Warranty | 3 yr module / 1 yr components | ||||
| 13 | Price List |
The original BoatStartPlus™ delivers dependable starting power for single-engine tactical and support vessels with engines up to 7 liters. Compact, maintenance-free, and built to perform in the field.
BoatStartPlus™ XL
SKU: MKSM612
More capacity for bigger single-engine vessels.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | SPECS | VALUE |
|---|---|---|---|---|---|---|
| 2 | Voltage | 12V | ||||
| 3 | Cells | 6-cell | ||||
| 4 | Capacitance | 525F | ||||
| 5 | Max Power | 47 kW | ||||
| 6 | Engine Size | Up to 8L | ||||
| 7 | Internal Resistance | 0.0011 ohms | ||||
| 8 | Energy Stored | 42.3 kJ | ||||
| 9 | Dimensions | 14.79" x 7.75" x 8" | ||||
| 10 | Weight | 22 lbs | ||||
| 11 | Operating Temp | -40°F to 149°F | ||||
| 12 | Warranty | 3 yr module / 1 yr components | ||||
| 13 | List Price | $2,899.98 |
When operational demands require more starting capacity, the XL is ready. With 525 farads and 47 kW of starting power, it handles engines up to 8 liters reliably — in any conditions, at any temperature.
BoatStartPlus™ Boost
SKU: MKSM1012
Built for twin-engine vessels and larger offshore boats.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | SPECS | VALUE |
|---|---|---|---|---|---|---|
| 2 | Voltage | 12V | ||||
| 3 | Cells | 10-cell | ||||
| 4 | Capacitance | 1,260F | ||||
| 5 | Max Power | 112 kW | ||||
| 6 | Engine Size | Up to 15L | ||||
| 7 | Internal Resistance | 0.0008 ohms | ||||
| 8 | Energy Stored | 101.6 kJ | ||||
| 9 | Dimensions | 19.44" x 7.75" x 8" | ||||
| 10 | Weight | 32 lbs | ||||
| 11 | Operating Temp | -40°F to 149°F | ||||
| 12 | Warranty | 3 yr module / 1 yr components | ||||
| 13 | List Price | $3,866.64 |
Built for twin-engine patrol craft and multi-engine support vessels. With 1,260 farads and 112 kW of starting power, the Boost handles demanding engine configurations up to 15 liters — so your vessel is ready when the mission demands it.
BoatStartPlus™ Turbo
SKU: MKSM1212
Maximum 12V power for the most demanding twin-engine setups.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | SPECS | VALUE |
|---|---|---|---|---|---|---|
| 2 | Voltage | 12V | ||||
| 3 | Cells | 12-cell | ||||
| 4 | Capacitance | |||||
| 5 | Max Power | |||||
| 6 | Engine Size | Up to 15L | ||||
| 7 | Internal Resistance | |||||
| 8 | Energy Stored | |||||
| 9 | Dimensions | |||||
| 10 | Weight | |||||
| 11 | Operating Temp | -40°F to 149°F | ||||
| 12 | Warranty | 3 yr module / 1 yr components | ||||
| 13 | List Price | $4,115.80 |
When your 12V twin-engine vessel requires maximum starting reliability in the field, the Turbo delivers. Engineered for operations where equipment failure is not an option.
BoatStartPlus™ Ultra
SKU: MKSM1024
The 24V solution for larger vessels and serious offshore powerboats.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | SPECS | VALUE |
|---|---|---|---|---|---|---|
| 2 | Voltage | 24V | ||||
| 3 | Cells | 10-cell | ||||
| 4 | Capacitance | 315F | ||||
| 5 | Max Power | 112 kW | ||||
| 6 | Engine Size | Up to 32L | ||||
| 7 | Internal Resistance | 0.0019 ohms | ||||
| 8 | Energy Stored | 112.4 kJ | ||||
| 9 | Dimensions | 19.44" x 7.75" x 8" | ||||
| 10 | Weight | 32.5 lbs | ||||
| 11 | Operating Temp | -40°F to 149°F | ||||
| 12 | Warranty | 3 yr module / 1 yr components | ||||
| 13 | List Price | $3,866.64 |
Running a 24V system on a larger patrol or support vessel? The Ultra handles engines up to 32 liters with 112 kW of starting power — ensuring operational readiness regardless of battery condition or environmental extremes.
BoatStartPlus™ Max
SKU: MKSM1224
The ultimate BoatStartPlus™ for the largest, most demanding vessels.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | SPECS | VALUE |
|---|---|---|---|---|---|---|
| 2 | Voltage | 24V | ||||
| 3 | Cells | 12-cell | ||||
| 4 | Capacitance | 263F | ||||
| 5 | Max Power | 94 kW | ||||
| 6 | Engine Size | Up to 32L | ||||
| 7 | Internal Resistance | 0.0022 ohms | ||||
| 8 | Energy Stored | 102 kJ | ||||
| 9 | Dimensions | 19.44" x 7.75" x 8" | ||||
| 10 | Weight | 34.5 lbs | ||||
| 11 | Operating Temp | -40°F to 149°F | ||||
| 12 | Warranty | 3 yr module / 1 yr components | ||||
| 13 | List Price | $4,115.80 |
The MAX is built for the most demanding 24V naval applications. From heavy support craft to large multi-engine vessels, it delivers 94 kW of reliable starting power for engines up to 32 liters. When mission readiness depends on starting every time — the MAX is your solution.
Compare All Six Models
Match your vessel’s engine size and electrical system to the right BoatStartPlus™ model for your operation.
| BoatStartPlus™ | BoatStartPlus™ | BoatStartPlus™ Boost | BoatStartPlus™ Turbo | BoatStartPlus™ Ultra | BoatStartPlus™ Max | |
| SKU | MKSM2012 | MSKM612 | MKSM1012 | MKSM1212 | MKSM1024 | MSKM1224 |
| Voltage | 12V | 12V | 12V | 12V | 24V | 24V |
| Cells | 20 | 6 | 10 | 12 | 10 | 12 |
| Capacitance | 240F | 525F | 1,260F | 315F | 315F | |
| Max Power | 42.05 kW | 47 kW | 112 kW | 112 kW | 94 kW | |
| Engine Size | Up to 7L | Up to 8L | Up to 8L | Up to 15L | Up to 23L | Up to 23L |
| Weight | 8 lbs | 22 lbs | 32 lbs | 32.5 lbs | 34.5 lbs | |
| Start Cycles | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 |
| Price | $2,899.98 | $3,866.64 | $4,115.80 | $3,866.64 | $4,115.80 |
Need help specifying the right model for your fleet or procurement requirements?
Call (800)527-8278 — we work directly with military and naval procurement teams.
Built for Operators Who Can’t Afford a No-Start
“The value the KSM has provided is me knowing that my boat will start every time. It’s peace of mind when I’m 30-40 miles offshore. I don’t want my starting bank to drain and be stuck out there. Knowing that capacitor is holding the charge and can start the motor is what sold me.”
– Captain Mike Littlefield, Archangel Fishing Charters
Engineering You Can Count On
Instant Power
Maximum cranking amps released in milliseconds—no chemical delay
30-Second Recharge
Fully recharged in 30 seconds from any 12V source
All Temps
Full power from -40°F to 149°F with zero degradation
No Charging
Supercapacitor technology—never needs charging, no batteries to replace
Waterproof
IP67 rated components stand up to saltwater, extreme weather, and combat conditions
Made in USA
Designed and manufactured in Lake in the Hills, Illinois
Mission-Critical Equipment Starts Every Time.
In the field, a vessel that won’t start isn’t just an inconvenience — it’s a mission failure. BoatStartPlus™ installs once and delivers reliable starting power for the life of your vessel, in any environment, at any temperature.
Military and government procurement inquiries welcome.
Call (800)527-8278 or specifications and volume pricing.