The battery is incorporated into the photo pack itself, so you get a new battery when you replace the film pack.
Unfortunately it's an obsolete system as production of photo packs ended about two and a half years ago, and all remaining packs are now at least six months out of date.
This means that the overwhelming majority of Polaroid 600 photo packs now have flat batteries, stale photo chemistry, or both. Refrigerated photo packs may have good chemicals, but the batteries will definitely be flat as cold kills them.
There is only one fix for this, but it means that you need to modify the camera to take an external 6v dc power supply such as from an externally mounted battery or an AC mains adapter. It's not easy though as the camera is all clip together and the joints were never designed to come apart again. Please search my other answers for more details if you want as I've answered this question regularly, but given that the remaining photo packs are mostly useless and cost a fortune for just ten photos it's really not worth bothering. Note that suppliers of the remaining photo packs will almost never offer any kind of guarantee on them: those who do charge even more to cover the high likelihood of having to refund or replace.
Sorry if this news is disappointing, but it's just one of many old cameras which are now practically useless and won't be the last. I hope that you've found my answer to be informative and ask only that you return the favour by rating my answer.
Now there is a solution for those Polaroid afficionados around the globe: http://www.the-impossible-project.com/
This guy used to work for Polaroid and after much ado convinced the bigwigs at HQ that should sell him the machines to make our films. And they caved in. They're now shipping...
Answers & Comments
The battery is incorporated into the photo pack itself, so you get a new battery when you replace the film pack.
Unfortunately it's an obsolete system as production of photo packs ended about two and a half years ago, and all remaining packs are now at least six months out of date.
This means that the overwhelming majority of Polaroid 600 photo packs now have flat batteries, stale photo chemistry, or both. Refrigerated photo packs may have good chemicals, but the batteries will definitely be flat as cold kills them.
There is only one fix for this, but it means that you need to modify the camera to take an external 6v dc power supply such as from an externally mounted battery or an AC mains adapter. It's not easy though as the camera is all clip together and the joints were never designed to come apart again. Please search my other answers for more details if you want as I've answered this question regularly, but given that the remaining photo packs are mostly useless and cost a fortune for just ten photos it's really not worth bothering. Note that suppliers of the remaining photo packs will almost never offer any kind of guarantee on them: those who do charge even more to cover the high likelihood of having to refund or replace.
Sorry if this news is disappointing, but it's just one of many old cameras which are now practically useless and won't be the last. I hope that you've found my answer to be informative and ask only that you return the favour by rating my answer.
Now there is a solution for those Polaroid afficionados around the globe: http://www.the-impossible-project.com/
This guy used to work for Polaroid and after much ado convinced the bigwigs at HQ that should sell him the machines to make our films. And they caved in. They're now shipping...