I have a relatively new pearstone battery used in my M8. B&H sold them for about $80. No longer have the M8 and the battery was only charged three times. It seems to hold a full charge but after the third charge it will no longer register on the fuel guage of the camera. Shows as empty. Has a full charge however. It can be yours for $30 plus $6 for USPS shipping. Could be useful as backup in an emergency. Only to address in USA please. No refunds on this one. PM me if interested.