Foster City (CA) - Right before Christmas, Sony will launch a new batter pack for the PSP that it claims doubles the playtime offered by the current battery.

Though geared more towards the slimmer model of the PSP that was launced this year, the "Extended Life Battery Kit" is compatible with the original version of the device as well. The kit includes a 2200 mAh lithium-ion battery pack, which provides enough extra juice to double the life of pevious models.

According to senior marketing manager John Koller, the new battery is a bit thicker and therefore will not fit in with the battery cover that comes with the PSP system. The extended battery kit includes a new cover that will be able to house the bigger battery.

The new battery will be priced at around $45 and will launch in the middle of next month, just in time for last-minute holiday shoppers.