Cloud Defensive CD65001 18650 Rechargeable Battery 18650 3.6V 3000 mAh Compatible w/ UI2 Custom Label Charger/D2 Custom Label Charger

If you run Cloud Defensive weapon lights, you need reliable power to count on when it matters. The Cloud Defensive CD65001 18650 rechargeable battery is purpose-built for that role—a 3.6V lithium-ion cell rated at 3000mAh capacity with the electrical performance to handle sustained use in demanding conditions. This is an unprotected, flat-top design, which means it's optimized for integration with proper charging and protection systems rather than standalone operation in standard consumer devices. It pairs exclusively with Cloud Defensive's UI2 or D2 Custom Label Chargers, ensuring you're using matched components engineered to work safely together.

The 18650 form factor is proven and widely trusted in tactical and precision shooting circles, but not all 18650 batteries are created equal—and compatibility matters more than you'd think. Many popular weapon light brands don't support unprotected cells like this one, so if you're building a Cloud Defensive system, this battery is the right choice. At 48 grams and with dimensions of approximately 18.1mm diameter by 64.9mm length, it fits standard weapon light housings designed for the platform. The 15A continuous discharge rating and 10.8Wh energy capacity give you consistent output over extended training sessions or field use.

Lithium-ion batteries demand respect. Read the warnings and handling guidance carefully—improper storage, charging, or use can create serious safety hazards. Always store in the protective case provided, charge on a fire-proof surface with your matching Cloud Defensive charger, and never leave cells unattended during charging. If a battery shows signs of damage, unusual odor, heat, or deformation, stop use immediately.

Key Features

• 3000mAh capacity with 10.8Wh energy density for extended runtime
• Flat-top, unprotected cell design for integration with proper protection circuitry
• Compatible exclusively with Cloud Defensive UI2 and D2 Custom Label Chargers
• 15A continuous discharge rating for consistent performance under load
• Lightweight at 48g; standard 18650 dimensions for secure fit

Specifications

Frequently Asked Questions

What charger do I need for the Cloud Defensive CD65001 battery?

This battery is designed for use with the Cloud Defensive UI2 or D2 Custom Label Chargers. These chargers are matched to the battery's specifications and provide the proper protection circuitry. Do not use other chargers or attempt to charge with incompatible equipment.

Is this battery compatible with other weapon light brands?

No. This is an unprotected cell, and most other weapon light manufacturers do not support unprotected batteries. It is engineered specifically for Cloud Defensive systems. Always verify your light's requirements before purchasing.

How should I store and transport this battery?

Always store and transport the battery in the protective case or box in which it was delivered. Never leave lithium-ion cells loose in a pocket, purse, bag, or any location where they could short-circuit against metal objects or other conductive materials. Proper storage is essential for safety.

What happens if the battery feels hot or smells unusual?

Stop use immediately. If a battery emits an unusual smell, feels hot, changes color or shape, or appears abnormal in any way, do not attempt to charge or use it further. Place it in the protective case and contact your local waste management or recycling facility for proper disposal.