Power & Propulsion  /  JLTV HEV Kit
JLTV Series Hybrid-Electric Conversion Kit

Same JLTV. New Capability.

A bolt-on series hybrid powertrain that converts a stock JLTV in 24 hours with a standard military tool set. Silent mobility, triple-voltage export power, and 469 miles of hybrid range. No permanent modifications, and it comes back off just as clean.

Army RCCTO Prototype Program All JLTV Variants 100% Reversible MOSA
469 miHybrid range @ 35 mph
125 miSilent range @ 35 mph
3.6 s0–30 mph
24 hrsInstall, depot or field
The system

A powertrain swap, not a new vehicle

The kit replaces the JLTV's mechanical drive path with MATBOCK's patent-pending series hybrid architecture: a 75 kW range-extending generator charges a 127 kWh usable battery pack, and two electric motors drive the front and rear axles independently.

Because the generator never mechanically drives the wheels, the vehicle can run engine-off on battery, idle silently on station, and push power off-board to whatever the mission plugs into it.

The kit was developed and refined across four phases of a U.S. Army Rapid Capabilities and Critical Technologies Office (RCCTO) prototype OTA, with vehicles delivered to the Army for testing.

Exploded CAD view of the MATBOCK JLTV HEV conversion kit: battery pack, range extender, motors and controllers
Integration

What changes, and what doesn't

Fleet managers get new capability without giving up commonality, warranty, or the option to go back.

Gained Capability

  • Silent mobility on battery alone, up to 125 miles at 35 mph
  • Silent watch with sensors and comms running, engine off
  • Exportable power across AC, HVDC, and 28 VDC
  • Acceleration of 0–30 mph in 3.6 seconds from 750 kW peak drive power
  • Range of up to 469 miles in hybrid mode at 35 mph

Kept The JLTV

  • No OEM vehicle modifications, preserving warranty and fleet commonality
  • Bolt-on, 100% reversible integration
  • 24-hour install from a stripped JLTV at depot or field level
  • Standard military tool set and single-soldier connectors
  • Factory exterior, visually indistinguishable from a standard JLTV
Silent mode
125MILES

Battery-only range at 35 mph. Move into position, hold, and get out without announcing it.

In silent mode the range extender shuts down and the JLTV runs entirely on its 127 kWh usable pack. Acoustic and thermal signature drop by more than 80%, which changes the math for reconnaissance, observation posts, and any mission where the engine is the loudest thing on the objective.

When the pack needs it, the 75 kW range extender comes back online and recharges on the move.

Exportable power

The vehicle is the generator

Three export buses with field-standard connectors. Power a command post, charge another vehicle, or support a microgrid without towing a separate genset.

AC
42 kW
120/208 VAC, 3-phase

Hubbell 5-pin & sleeve. Shelters, C2 nodes, and tactical operations centers.

HVDC
250 kW
370–800 VDC

Amphenol PowerLok. Vehicle-to-vehicle charging, vehicle-to-grid, and high-draw payloads.

LVDC
17.5 kW
28 VDC

NATO slave / busbar. Standard military vehicle and equipment power.

Technical specifications

By the numbers

System Overview

Vehicle platformJLTV (all variants)
ArchitectureSeries hybrid-electric
IntegrationBolt-on, non-permanent
Install time24 hrs from stripped JLTV
Tools requiredStandard military tool set
Reversibility100%, no vehicle mods

Vehicle Performance

0–30 mph3.6 s
Hybrid range @ 35 mph469 mi
Silent range @ 35 mph125 mi
Hybrid range @ 65 mph260 mi
Max speed82 mph
Max grade60%
Fording depth60 in (with fording kit)

Electric Drive

Motors2× Helix SPX242-175
Motor controllers2× Helix CTI-4
Peak power750 kW
Continuous power200 kW
Peak wheel torque24,750 Nm
Continuous wheel torque16,000 Nm
LayoutTwo-motor, front/rear axle

Energy Storage

ChemistryLi-ion NMC
Capacity182 Ah
Voltage700 VDC nominal
Usable energy127 kWh
Cycle life1,500–3,000 cycles
Thermal managementChiller / PTC
Operating temp−40°F to 130°F

Power Generation & Export

Range extender (continuous)75 kW
AC export42 kW, 120/208 VAC 3P
AC interfaceHubbell 5-pin & sleeve
HVDC exportUp to 250 kW, 370–800 VDC
HVDC interfaceAmphenol PowerLok
LVDC export17.5 kW, 28 VDC
LVDC interfaceNATO slave / busbar

Weights, Dimensions & Standards

Curb weight14,300 lb
Payload capacity3,500 lb
Ground clearance18–30 in
Dimensions (L × W × H)246 × 98.4 × 102 in
Design standardsMIL-STD-810H / 461G
Data interfaceCAN-Bus J1939

Specifications are engineering estimates based on prototype testing and are subject to change.

Modular Open Systems Approach

Built to be upgraded, not replaced

The kit is designed to DoD MOSA principles. Interfaces conform to published technical standards, enabling competitive sustainment and technology insertion with reduced vendor lock-in. COTS components and a defense-qualified supply chain support rapid production scale-up.

The architecture leaves room to grow: full-electric conversion, autonomous drive integration, V2G and microgrid operations, and the power management that future directed energy systems will demand.

MATBOCK JLTV HEV prototype during track testing
MATBOCK JLTV HEV prototype on grade test slope
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