Hearing Aid Battery Tester Battery Storage Case (Blue)
Important Notice before Purchasing: Now digital hearing aids all have low-
voltage protection . Hearing aids began to alarm if the voltage is lower than
1.1V , remind the users to replace the battery in order to achieve best effect
. If you take the battery out , the voltage would be rebound . But please note
, the rebound voltage is false electricity . If you test the battery on the
battery tester , it would show full voltage . But in fact , it is not enough
for using hearing aids . We have tested different brands & different types of
the batteries , they all have the same point , that is if place the battery in
air for a few time, the voltage would be rebound (Open-circuit voltage or
false-open voltage). So when the hearing aid is distorted or alarm to replace
the battery, the battery needs to be test immediately . And the result is for
reference only, the actual feedback from hearing aids shall prevail.
 
Product Features
  

         
If we take the battery out , the voltage would be rebound . Please note , the rebound voltage is false electricity . If you test the battery on the battery tester , it would show full voltage . But in fact , it is not enough for using hearing aids .
         
If you want to test a new battery,make sure to keep it in the air for sevearl minutes to active it.
         
Digital Display indicates battery strength.
         
Works with most size of hearing aid battery.
         
Storage compartment for 2 extra batteries.