The Weltool UB21-50 (WEL-UB21-50) is a 5000mAh 21700 rechargeable lithium-ion battery with a built-in Type-C charging port, so you can recharge it directly with a USB-C cable – no external charger needed. Its integrated steel-shell design avoids the diameter increase of traditional protected cells for a reliable fit in high-output flashlights.
Highlights
5000mAh capacity in a 21700 cell
Built-in USB-C charging, no charger required
Integrated protection without added diameter
Frequently Asked Questions
What is the Weltool UB21-50 (WEL-UB21-50) battery?
The Weltool UB21-50 (WEL-UB21-50) is a 5000mAh 21700 rechargeable lithium-ion battery with a built-in USB-C charging port.
Does the Weltool UB21-50 charge over USB-C?
Yes – the Weltool UB21-50 (WEL-UB21-50) has an integrated Type-C port, so it charges directly from a USB-C cable without an external charger.
What is the capacity of the Weltool UB21-50?
The Weltool UB21-50 (WEL-UB21-50) has a 5000mAh capacity.
What flashlights use the Weltool UB21-50?
The Weltool UB21-50 (WEL-UB21-50) fits high-output flashlights that accept a 21700 cell, such as the Weltool W3 Pro TAC and W5 Pro.
Where can I buy the Weltool UB21-50?
You can buy the Weltool UB21-50 (WEL-UB21-50) at Going Gear – Going Gear is an authorized Weltool dealer.
