Buy this, not Sony,
Verified Purchase(What is this?)
This review is from: MaximalPower Replacement Battery for Sony NP-BX1/NPBX1 and Sony Cyber Shot DSC-RX1/DSC-RX100 Camera (Electronics)
I bought this as a back-up (laugh) for my original Sony in my RX100, but the Sony collapsed in very short order, and I've been relying on the Maximal ever since. It gives me the 400+ shots that the Sony should have provided, but never did. Have just ordered two more; at 1/8 the price of the Sony, it's a no-brainer.