NTI - The run up to major announcement, page-32

Afternoon @Dhm
I believe this will help you answer your question:

The user can use the Mente Autism system as a therapy throughout his or her lifetime. It is advised that the Mente Autism system is used every day with no or minimal interruptions. With time, the brain will learn to adapt to a more optimal brain frequency activity. This does not mean that the user will at some point no longer benefit from the device: constant use usually means continued progress. This progress is interrupted if the device is no longer used.
In terms of the device, it is important that this is properly taken care of, by avoiding damage to the device, regularly charging it and downloading any available software updates. The lifetime of the product is determined mainly by the battery life. The battery has a maximum number of charging and discharging cycles. It is therefore not advisable to charge Mente Autism after every session as this would reduce its lifetime. With a typical use of 40 minutes per session, a fully charged Mente Autism device should last between 3 to 4 sessions. The lifetime of the product is dependent on battery lifetime, which is 500 charge/discharge cycles. This results in approx. 5 years.

http://www.mentetech.com/mente-autism/faqs/

Cheers

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