Widex P38 - Manual (Page 11)

11
Exhausted batteries: If you hear four rapid beep-
tones while wearing your hearing aid, it is an indica-
tion that you should exchange the battery as soon as
possible as the battery is nearly exhausted. Once the
battery is totally exhausted, the hearing aid will be
completely silent.
Exactly how long the hearing aid will function af-
ter the beep-tones varies from one case to another.
We recommend that you always have a spare battery
with you.
Never leave an exhausted battery in the hearing aid.
Exhausted batteries may leak, which could damage
your hearing aid.