Hello martin,
Thank you for writing in.
To give you accurate answer, could you please send us the link of item?
We will find solution for you at that time.
Hope you can understand.
Best regards.

Hello David,
Thank you for writing in.
Is the following item you are mentioning?
200119
Here is an instruction for your reference.
200119 instruction
For more question, please feel free to contact us.
Best regards.

Hello Dan Donovan,
Thank you for writing in and your purchase.
We are sorry for any inconvenience caused you.
Here is a instruction
180051
If you need more help, please feel free to contact us.
Best regards.

Hallo Franz Peter,
Vielen Dank für das Schreiben in.
Wir entschuldigen uns für irgendwelche Unannehmlichkeiten.
Da gibt es zu viele ähnliche Titel für unser Produkt, würden Sie uns bitte den Link des Artikels oder seiner ASIN schicken?
Und können Sie uns bitte mehr Details über Ihr Problem erzählen?
Wir werden zu dieser Zeit Solsuion finden.

Hello Franz Peter,
Thank you for writing in.
We are sorry for any inconvenience caused you.
As there are too many similar titles for our product, would you please send us the link of item or its ASIN?
And could you please tell us more detail about your problem?
We will find soltuion for you at that time.
Best regards.

Hello Alex，
Thank you for writing in.
We are not sure whether the following item can meet your demand.
https://www.amazon.com/DROK-Multimeter-Charge-Discharge-Electricity-Overvoltage/dp/B01M5CWR2P/ref=sr_1_1?s=aht&ie=UTF8&qid=1489126390&sr=8-1&keywords=drok+200193

The measure range of thit item may be too large to suit your demand.
Best regards.

Hello Sang,
Thank you for writing in.
We have many kinds of converter. Could you please let us know more deatil about your requirment?
What is the input voltage? Do you want a boost converter or buck converter?
Look forward to your reply.
Best regards.

Hello Sylvain Gaudreau,
Thank you for reply.
This is buck converter. The output voltage must be less than the input voltage.
When the input voltage drop to DC 22v, we are sorry it is impossible to output DC36V.
Is this can help with you?
For more questions, please feel free to cotnact us.
Best regards

Hello Franz Peter,
Thank you for writing in.
To give you a correct answer, would you please firstly sned us the link of item to ensure which item you mention?
Sincerely beg for your forgiveness.
Look forward to your reply.
Best regards.