The cordless packs are still using alot of nicads with very low capacity, so it may not give you more than a few hours of use.. I have a computer with a double capacity battery that sticks out the bottom of computer, and if that engineering went to the scanner a six cell battery for the scanner would double capacity and possible more stable in the upright position, and then possibly fit in a commercial charger. With that in mind a guy could have a radio mod company like after market for cars. I would buy a commercially upgraded case, and battery & charger if available.