Reference · Power & Battery
Power and Battery Systems: How LLI Keeps You Running
Every power component in the LLI ecosystem. Battery compartments, external power, and how to configure for your mission profile.
The Power Architecture
LLI uses a modular power system on the MH-1. Instead of locking you into a single battery type with a fixed compartment, the MH-1 accepts swappable power modules that change your battery format, capacity, and operational profile without tools and without modification to the housing.
The MH-1 ships standard with the CR123A battery compartment. Additional compartments are available as accessories.
Section 1 — Compartments
MH-1 Battery Compartments
The MH-1 accepts swappable power modules. Each changes your battery format, capacity, and operational profile without tools and without modification to the housing.
| Compartment | Weight | Battery Format | Price |
|---|---|---|---|
| Standard | 23g | CR123A | Included |
| UBC | 31g (+4g w/ AA cap) | CR123A, AA, AAA, Fischer | $199 |
| Standalone Fischer | 15g | External power only | $49 |
| AA/AAA Cap (accessory) | Accessory | Adds AA/AAA to UBC | $49 |
Standard Battery Compartment
The default configuration that ships with every MH-1. Runs on CR123A lithium batteries at 23g. CR123A delivers 3 volts with excellent energy density, performs well in temperature extremes (rated to -40 degrees F), has a shelf life of approximately 10 years, and provides consistent voltage output throughout the discharge cycle.
Universal Battery Compartment (UBC)
The most versatile power option in the MH-1 system. Weighs 31g and accepts CR123A batteries, AA batteries, AAA batteries, and connects to external power through the Fischer port built into the back of the compartment. Start a mission on CR123A, switch to AA or AAA when those run out, and plug into external power for sustained operations. All without tools, all without removing the housing from your helmet. The Fischer port is a military-grade circular connector that provides a secure, waterproof connection between the housing and an external battery pack. At $199, the UBC is the single most impactful accessory purchase for MH-1 owners who want maximum power flexibility.
Standalone Fischer Compartment
The Standalone Fischer replaces your onboard battery compartment and dedicates the MH-1 entirely to external power. At 15g, it is 8g lighter than the Standard compartment and 16g lighter than the UBC. Designed for users who run external power exclusively and want the lightest possible housing configuration. At $49, it is the most affordable compartment option.
Section 2 — External Power
LLBP: Low Light Battery Pack
LLI's dedicated external battery pack. Runs on either 2x AA or 4x AA batteries. Connects via Fischer or LEMO connector. Designed to sit on the counterweight pouch at the rear of the helmet, balancing the weight of the night vision system at the front. This counterweight positioning reduces neck fatigue during extended wear and improves stability during dynamic movement.
Section 3 — Other Platforms
UH-1 and MH-14 Power
UH-1
AA battery standard with external power port. AA was chosen for global availability and cost. Delivers 25 to 90 hours depending on configuration.
MH-14
Single AA battery with 50+ hours of continuous operation. The most efficient power system in the LLI lineup relative to tubes powered. Two or three spare AA batteries provides enough power for a week of nightly use.
Section 4 — Purchase
How to Buy
All LLI power accessories are available through the authorized distributor network including Custom Night Vision, GPNVGs, Nightfall Optics, Aurora Tactical Group, and MK4 Design.
Keep Reading
Related Guides
Understand the rest of the LLI ecosystem and how power fits into each platform.
Flagship Housing
The MH-1 Complete Guide
Materials, manual gain, modular power, and full specifications for the LLI flagship binocular housing.
Read Article →
Monocular
The MH-14 Guide
Single-AA efficiency and the most power-efficient platform in the LLI lineup relative to tubes powered.
Read Article →
Housing
The UH-1 Guide
AA-standard power with an external port, chosen for global availability and 25 to 90 hours of runtime.
Read Article →
Next Step
Start Your Mission.
Visit our retail store, find a distributor, or configure your own system.