InstaLoad is a patented technology developed by Microsoft which allows cylindrical batteries to function in a battery holder regardless of the batteries polarity.
The InstaLoad technology can be licensed from the Microsoft hardware Intellectual Property Licensing program. Microsoft provides royalty-free licensing for manufacturers of accessibility devices. InstaLoad is purely mechanical.
The device is designed to save time when swapping out batteries and reduce confusion from hard to read battery diagrams.
InstaLoad was designed to address the large number of phone calls to the Microsoft customer help desk in which consumers were improperly placing batteries in Microsoft wireless devices (such as the keyboard and mouse).