I have think that there is something not right with my Nexus itself. With it in the car, using Battery Monitor Widget, at least 75% of the time it will show as "Discharging" even though it also says "A/C Connected". Every now and again it will charge a little, but more often than not it just slowly drains. While I would be OK with this if I was streaming music/using navigation etc. It will lose charge with just simply music playing from a USB stick. For example, apart from the 3% that it charged on the 11th, since then it not charged at all, despite being connected to the same power source, and the same usage. Temperatures here have not been that hot this week either.
I decided to take a look at what the Battery Monitor Widget shows when plugged into a wall outlet, same thing, sometime it shows charging, but more often than not it simply says "Discharging" and "A/C Connected" with nothing open/running. That at least tells me that my wiring in the car is fine, but it does then makes me wonder if there is something wrong with the Nexus.. I have tried inside with the Asus charger (albeit with a Sony USB cable), a Sony charger (1.5A) and a Kindle Fire charger (1.8A). Same thing persists with all of them.
I have noticed when plugging in the charger that it does not always recognize it has been plugged into a power source. Typically I have to unplug it and then plug it in again for it to recognize it as being on a power source. I am not entirely sure what to do, I know I have the original box, but am not sure I have the receipt. The Nexus is only about 4 months old, so is still under warranty. But, I need to figure out if I can flash it back to stock, and if I have the receipt if I decide to try and return it for an exchange.
Frustrating really, I don't expect it to constantly maintain 100% while in the car. But, with the type of use that it goes through, I feel like it should charge more than it loses. Any one have any suggestions on what I can check?