The Power Source: 21700 5000mAh USB-C
The kit includes two 21700 lithium-ion batteries with a rated capacity of 5000mAh. In the current landscape of portable illumination, 21700 cells are the industry standard for high-output tactical lights (like the L35 series). These aren't generic cells; they are engineered to handle the high-drain demands of modern drivers without significant voltage sag.
Crucially, these batteries feature integrated USB-C charging ports. This eliminates the dependency on separate wall chargers or bulky docking stations. When you are operating out of a vehicle or a base camp, you can recharge these cells directly via a power bank or laptop. It simplifies your loadout: fewer cables, less weight, and more redundancy.
The A2 Storage Box: Protection and Utility
Loose batteries rattling around in a cargo pocket are a liability. They risk short-circuiting against keys or tools. The A2 Battery Box solves this by providing a dedicated, impact-resistant housing.
- Compact Form Factor: The case is surprisingly compact, roughly the size of the battery itself, making it easy to stash in a pouch or EDC organizer.
- Internal Charging: You do not need to remove the batteries to charge them. The case features a pass-through port, allowing you to charge the cells while they remain protected inside.
- Status Indicators: The box features LED indicators that provide immediate feedback on charge levels. In a high-stress environment, knowing exactly how much juice you have left without guessing is vital.
Field Application: The Rotation System
For the professional operator or the serious enthusiast, this kit enables a "hot-swap" workflow. You carry one battery in your light, and the spare in the A2 box. When the primary cell depletes, you swap it instantly. The depleted cell goes into the A2 box to be recharged later, or kept safe until you return to base.
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