MPD is a licensed manufacturer of Microsoft's InstaLoad technology,
allowing us to use this amazing technology in our battery holders.
InstaLoad eliminates incorrect battery insertions by making the battery
work regardless of which way it is inserted. By using special contacts
which have both positive and negative terminals instead of just one or
the other, and a special circuit connecting these contacts, electronics
users no longer need to worry about putting a battery in the wrong way.
More information about InstaLoad is available
InstaLoad battery holders are an ingenious solution to guarantee correct battery insertions by users.