The Canon Powershot Pro series of high end point and shoot cameras come with a Li-Ion battery pack that is rechargeable. The camera will come with the charger, too. You can also buy extra or replacement batteries.
Both the Canon Powershot Pro 1 and 90 IS a use a High Capacity, rechargable Lithium-Ion battery called the BP-511A Battery Pack. The PowerShot Pro70 uses a Battery Pack NB-4H which can use 4 rechargeable AA batteries.
