Phonic Ear Radium 920SR User Manual page 44

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check indicator light
1
1
battery life
NiMH rechargeable AA = 12 hours (approx.)
Alkaline disposable AA = 15 hours (approx.)
WARNING: Never recharge alkaline
batteries! This will cause damage to the unit
and will void the product warranty.
Check indicator light:
Continuous green = adequate power
Continuous red = low battery
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