HoMedics Thera P BPA-150 Manual page 13

Replace the batteries if:
1. The weak battery symbol appears on the display.
2. Nothing appears on the display when the power is
switched on.
As the supplied batteries are for test only, they may be
discharged earlier than batteries you buy in stores.
Replace the batteries in pairs. Remove batteries when
unit is not in use for extended periods of time.
Note: Batteries are hazardous waste. Do not dispose
of them together with the household garbage.
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