I went to a Verizon store and bought the extended battery for my Thunderbolt. I believe it's the 2750 milliamp voltage model. Also got the semi hard/soft silicon case to go with it. Yes, the combination of the extended battery and case does add more weight and thickness, but surprisingly, it still fits in my front right trouser pocket pretty well. My front left trouser pocket is reserved for my wallet, which is noticeably thicker than my Thunderbolt with the extended battery.
My initial impressions are that my battery life is certainly longer! I may be imagining this, but the extended battery seems to take longer to get up to 100% full charge. But conversely, the battery also drains noticeably slower throughout the day. I also tried buying the wireless charging base, but unfortunately found out that the special charging back is only for the stock size battery, not for the extended battery. Too bad, I'm hoping someone will make the special back for the extended battery soon.
I've had this extended battery now for the past few days, and I'm satisfied with it.
My initial impressions are that my battery life is certainly longer! I may be imagining this, but the extended battery seems to take longer to get up to 100% full charge. But conversely, the battery also drains noticeably slower throughout the day. I also tried buying the wireless charging base, but unfortunately found out that the special charging back is only for the stock size battery, not for the extended battery. Too bad, I'm hoping someone will make the special back for the extended battery soon.
I've had this extended battery now for the past few days, and I'm satisfied with it.