The Wuben E7YTC 18650 Battery Extension Tube for E7 Flashlight is a durable accessory designed to extend the runtime of the Wuben E7 flashlight, ideal for camping, hiking, or professional tasks requiring prolonged illumination. For example, it allows the use of a higher-capacity 18650 battery, significantly increasing runtime for extended outdoor use. With robust aluminum construction and a secure fit, it’s a must-have for E7 users. Backed by a 5-year warranty, the Wuben E7YTC for Outdoor Use enhances flashlight versatility and reliability.

Extended Runtime for Wuben E7
The Wuben E7YTC is crafted to replace the standard 18350 battery compartment of the Wuben E7, enabling compatibility with a single 18650 Li-ion battery (not included, recommended 2600-3400mAh). This extends the E7’s runtime significantly; for example, with a 2600mAh 18650 battery, the E7’s Low mode (50 lumens) can last up to 20 hours compared to 10 hours with the 1100mAh 18350 battery. The extension tube maintains the E7’s IP68 waterproof rating (up to 2 meters submersion) when properly sealed, though users should ensure tight threading to avoid water ingress. Some reviews note the tube’s threading may feel rough, requiring careful alignment when screwing onto the E7 body.

Durable and Compact Design
Constructed from aerospace-grade aluminum with a hard-anodized finish, the Wuben E7YTC matches the E7’s durability, resisting corrosion and impacts. It measures approximately 50mm in length and 24.5mm in diameter, adding minimal bulk while increasing the E7’s total length to about 132.6mm, with a weight of roughly 30g (without battery). The design ensures a secure fit with the E7’s head and tailcap, though some users report slight misalignment with the flashlight’s flats, which may affect aesthetics when used with the optional P1 headband. The extension tube is designed solely for the Wuben E7 and is not compatible with other models like the X0.

Ideal for Outdoor and Professional Use
The Wuben E7YTC 18650 Battery Extension Tube for E7 Flashlight is tailored for campers, hikers, and professionals needing extended runtime from their Wuben E7. For example, it supports prolonged use during multi-day trips or long work shifts, maintaining the E7’s 1800-lumen output for up to 2 hours on Super Bright mode with a 2600mAh 18650 battery. Easy to install by replacing the 18350 tube, it enhances versatility, though users should verify battery compatibility (protected 18650 recommended) to avoid issues like reverse polarity damage. Ensure proper threading to maintain waterproofing, and avoid using in extreme submersion without checking seals. With a 5-year warranty, the E7YTC offers reliable performance, though users should check alignment for headband use.

Package Dimensions and Weight

• Package Width: 5.0 cm

• Package Length: 6.0 cm

• Packaged Height: 3.0 cm

• Packaged Weight: 50g

Assembled Product Dimensions and Weight

• Assembled Product Width: 2.45 cm

• Assembled Product Length: 5.0 cm

• Assembled Product Height: 2.45 cm

• Weight: 30g

Key Features and Specs
The Wuben E7YTC 18650 Battery Extension Tube for E7 Flashlight enhances runtime performance. It features aerospace-grade aluminum construction, compatibility with the Wuben E7 flashlight (24.5mm head diameter), support for a single 18650 battery (2600-3400mAh, not included), maintains IP68 waterproofing when sealed, and comes with a 5-year warranty. Its compact size (50mm length x 24.5mm diameter) and weight (30g) make it ideal for extending E7 use in camping, hiking, or professional tasks.

Specifications Overview

• Type: Flashlight Battery Extension Tube

• Purpose: Camping, Hiking, Professional Tasks, Extended Runtime

• Material: Aerospace-Grade Aluminum with Hard-Anodized Finish

• Compatibility: Wuben E7 Flashlight (24.5mm Head Diameter)

• Battery Support: 1x 18650 Li-ion (Not Included, 2600-3400mAh Recommended)

• Waterproof: Maintains IP68 (Up to 2 Meters, Not for Diving) When Sealed

• Dimensions: 50mm (Length) x 24.5mm (Diameter)

• Weight: 30g

• Warranty: 5 Years

Package Contents
The package includes:

• Wuben E7YTC 18650 Battery Extension Tube

Note: Ensure the extension tube is securely threaded onto the Wuben E7 to maintain IP68 waterproofing; check seals before submersion. Use a protected 18650 battery (not included) with proper polarity (positive terminal toward the head) to avoid damage. The tube is not suitable for diving; rinse with fresh water after submersion. Store in a dry place to prevent corrosion. Compatible only with the Wuben E7; verify flashlight model before use. For headband use (e.g., with Wuben P1), align flats carefully to ensure stability.