Specs of original battery:
Rechargeable Lithium-ion battery (pack of three 18650 lithium batteries in serie connection)
Model: Klipsch the one
Voltage: 10.8V
Capacity: 2600mAh (28.08Wh)
Charge voltage: 12.6V
Red wire: +
Black wire: -
3INCMR19/66
Dongguan Large Electronic Co.,Ltd
170517298
You can use original battery of Marshall Stockwell with
Capacity: 2600mAh (28.08Wh)
Voltage: 11.1V
or better compatible with extended
Capacity: 3400mAh (37.7Wh)
( Voltage: 11.1V )
You have to adapt connection of 2+2 wires (2 red + 2 black) vs. 2 wires (red + black). That’s all!
Usefull links
The One Klipsch Certified Factory Refurbished specs:
https://www.klipsch.com/products/the-one-klipsch-certified-factory-refurbished#product-downloads
Manual: https://d2um2qdswy1tb0.cloudfront.net/product-manuals/The-One-Manual-v3.pdf
