The battery lasted a while initially. Maybe more than 5 hours, which was usually more than enough for my purposes: running, walking the dog and the occasional conference call. After about 4 months, the battery life is miserable. Less than 3 hours. Another disappointment is that the battery goes from 50% to zero in under 30 minutes. Warranty support works if you're within the warranty period, but battery life remains BTC1's weak point.
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