9Battery IndicatorsAn indicator will sound when the battery voltage islow You have approximately 5 minutes* to replacethe battery An indicator will sound just before thebattery stops working* Actual time between low battery indicator and shutdown will vary depending on environmental noiselevels and brand of battery used.Helpful Hints• NEVER FORCE THE BATTERY DOOR SHUT;this could result in serious damage; if the doorwill not close securely, check that the battery isinserted correctly• Do not open the battery door too far or damageis likely to occur• Because of their size, it’s a good idea tochange and replace batteries above a tableor desk to reduce the risk of dropping theinstrument or battery• Dispose of used batteries immediately in theproper waste or recycling container• Because batteries can vary in size andperformance, your hearing care professionalis your best source for lifespan estimates andverification that you are using the proper sizeand typePreparation