My experience with the battery life for Halo2 hearing aids is that they last about 7-10 days, based on full-time use (12+hours per day). This can be affected by the amount of streaming use (i.e. cell phone, other app). If you are a heavy cell phone user or watch movies on your iPad, the drain could be even higher.
As someone who wears Halo 2 everyday to test out since March, it lasts anywhere from 4 to 8 days depending on how much streaming you do from your phone. Normally 13's last 10 days or above but because it streams consistently it draws more power. They are awesome instruments.
Donald R. Kleindl III
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