This Logitech T650 touchpad hasn't been used/charged for probably 5 years. Stored indoors. No heat exposure or freezing temps. It was likely at half or less charge when last used. Battery is
Logitech Rechargeable Touchpad T650 - Black Graphics Tablets - Newegg.com
Logitech t650 Wireless Touchpad (on Ubuntu) « #!/bin/strube
How this wireless touchpad and mouse desk setup saved my wrists | ZDNET
Logitech Rechargeable Touchpad T650 - Black Graphics Tablets - Newegg.com
Logitech Touchpad T650 Mouse for sale online | eBay