Here’s another feedback today from a client who ordered Nikola Signature to power and charge his laptop. He ordered with 2.1mm DC adaptor at first and changed to 2.5mm later.

Hello Keetakawee,

The problem is solved. After all, I needed a 5.5/2.5mm plug. My wife noticed an improvement although she did not know that I ha med any changes.

Thank you again and best wishes,
Markus Wolfensberger

Some people believe that battery power source will make anything before it ineffective but his wife can still tell from blind listening. Glad to hear that Nikola linear power supply is effective enough. 🙂