Actually I have bought the Momentus XT SD25 but using this what I found out is that the installing the SD23 firmware the battery life dropped from 6.5 hr to 5.5 hr and after which I tried installing the SD24 firmware and I found out that the battery life still dropped from the 5.5 hr to 4.5 hr. so I would like to know what is your opinion regarding the battery life for the Momentus XT SD25.
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