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I just purchased a used K5 from KEH a few weeks ago. I am trying to buy an extra battery or two.
I found an eBay seller that had them and I ordered two. Unfortunately, their description was wrong. What they were selling was the D-Li109, not the D-Li90. They were pretty good about the return, though.
So, now I'm looking at eBay again, and I'm confused. My camera came with a battery labelled as a genuine Pentax D-Li90.
The confusing part is that my battery has four electrical contacts, while all the batteries being sold on eBay seem to have only three contacts. This includes a couple that are labelled (in the pictures, not just the description) as Hoya Corporation D-Li90.
I know that the K7, which preceded the k5 by a year or two, also uses the D-Li90. I don't remember exactly when Ricoh bought Pentax. Were the K7's sold under the Hoya ownership?
Did Pentax make a running change from three contacts to four?
Will the three-contact batteries work in my K5? I looked inside the battery compartment on the camera and it looks like there are only two contacts, at positions 1 and 3.
This may seem like a silly question, but I just got burned by one eBay seller, selling the wrong battery. I don't want to get burned again.
Typical eBay battery:
2300mAh Camera Battery For Pentax D-LI90 K-5 K-5II K-5IIs K-7 K-01 K-3 645D 645Z 747180916478 | eBay
My Battery: