Weltool BB5 Extension Tube – Dual 21700 Battery Tube for W5 & W5Pro LEP Flashlights
Weltool BB5 Extension Tube – Dual 21700 Battery Tube for W5 & W5Pro LEP Flashlights
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Weltool BB5 Extension Tube
The Weltool BB5 (BB5) is a flashlight accessory and dual-battery extension tube built for the Weltool W5 and W5Pro LEP flashlights. It lets you run two 21700 rechargeable lithium-ion batteries for dramatically longer runtime, all in a CNC-machined aluminum body with a hard-anodized finish.
Highlights
- Extended runtime — supports two 21700 lithium-ion batteries
- Custom fit for the Weltool W5 and W5Pro LEP flashlights
- CNC-machined aluminum alloy with durable black anodized finish
- Compact upgrade at just 70mm long, adding power without bulk
Specifications
| Model | Weltool BB5 |
| Compatibility | Weltool W5 / W5Pro LEP Flashlights |
| Material | CNC-machined aluminum alloy |
| Finish | Black anodized |
| Battery Support | 2 × 21700 lithium-ion (not included) |
| Length | 70mm ±1mm |
| Max Diameter | 30mm |
Frequently Asked Questions
What is the Weltool BB5 (BB5) used for?
The Weltool BB5 (BB5) is an extension tube that lets the Weltool W5 and W5Pro LEP flashlights run two 21700 lithium-ion batteries instead of one, greatly increasing runtime.
Which flashlights is the Weltool BB5 compatible with?
The Weltool BB5 (BB5) is designed specifically for the Weltool W5 and W5Pro LEP flashlights.
How many batteries does the Weltool BB5 hold?
With the Weltool BB5 (BB5) installed, the flashlight accepts two 21700 rechargeable lithium-ion batteries. Batteries are not included.
What is the Weltool BB5 made of?
The Weltool BB5 (BB5) is CNC-machined from aluminum alloy with a scratch-resistant black hard-anodized finish.
How long is the Weltool BB5 extension tube?
The Weltool BB5 (BB5) measures 70mm ±1mm in length with a maximum diameter of 30mm, adding capacity without unnecessary bulk.
Where can I buy the Weltool BB5?
You can buy the Weltool BB5 (BB5) at Going Gear. Going Gear is an authorized Weltool dealer.

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