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Unfortunately the battery meter is not currently accurate, and most people haven't done enough uninterrupted charge-and-read cycles yet with the new Touch to really establish the baseline battery life. It's notoriously difficult to create an accurate battery meter for lithium-ion batteries because of their voltage drop-off curve, so what we're hoping for is:
1) more accurate guidance on expected battery life, charging time, and interpreting the battery meter
2) more graceful low-power warning and shutdown
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