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 T650 Wireless Rechargeable Touchpad New Battery Free 4 day shipping | eBay
Logitech Touchpad T650 review: Multitouch gestures on any Windows 8 PC, tablet - CNET