I've done some testing on the best ways to charge the Nexus 9. Here's what I've found...
a. You'll want to upgrade your kernel.
The stock kernel for the Nexus 9 does not support charging over 1.5a, I'm using Elemental X which supports up to 2a.
b. Use a charger between 1.5-2a.
I'm using the Insiginia rapid charger from Best Buy.
I've tested 4 different cables to see the amp output from the charger with the new kernel using Ampere. The stock charger from the box, my Moto G LTE charger, an Insignia charger and a generic charger from ebay. The results are as follows...
Insignia Rapid Charger @ 5v/2.4a
I read the readings with the screen on 40% brightness and let them each sit for 60 seconds.
Min is the minimum amperage the cable hit, max in the very maximum and avg is the average at which the output sat around.
As expected, the stock usb cable performed the best, while the generic charger was very unstable and wild (I probably won't use this charger anymore as a result).
a. You'll want to upgrade your kernel.
The stock kernel for the Nexus 9 does not support charging over 1.5a, I'm using Elemental X which supports up to 2a.
b. Use a charger between 1.5-2a.
I'm using the Insiginia rapid charger from Best Buy.
I've tested 4 different cables to see the amp output from the charger with the new kernel using Ampere. The stock charger from the box, my Moto G LTE charger, an Insignia charger and a generic charger from ebay. The results are as follows...
Insignia Rapid Charger @ 5v/2.4a
I read the readings with the screen on 40% brightness and let them each sit for 60 seconds.
Min is the minimum amperage the cable hit, max in the very maximum and avg is the average at which the output sat around.
As expected, the stock usb cable performed the best, while the generic charger was very unstable and wild (I probably won't use this charger anymore as a result).
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