cannot charge my nexus 7 even with a new battery

Len Gorsky , Reset did not work, either the cable or charge port may be damaged. Look in the charge port and blow/pick out(carefully) any dust/debri that may be causing an issue. Try a different compatible charger/cord to see if that is the issue. If different compatible charger/cord does not fix, it is probably a damaged/loose port that will have to be repaired/replaced. If port looks/test good the battery or connection is probably bad(try cleaning the connection and reseat) and try. If port is found to be loose it can be resoldered or board assy. replaced, resoldering is really not a repair for the inexperienced because the charge port for your device is soldered to the daughter board and the heat generated could cause further damage if not very careful. I will post a link to a tear down guide to get you inside the tablet to check the charge port and will also post a link showing what is involved in repairing a mini USB attached to the board. The last link is to new charge port(daughter board) which may be cost effective depending on est. of resoldering connector, which you can also do a search for better pricing perhaps if needed. If not wanting to do the repair yourself have a good computer/cell phone repair shop have a look and estimate repair. Good luck.

I hope this helped you out, if so let me know by pressing the helpful button.

Nexus 7 2nd Generation Micro USB/Daughterboard Replacement

https://www.youtube.com/watch?v=m-_v-JkN...

https://www.amazon.com/Charging-Charger-...

http://www.ebay.ca/itm/OEM-Genuine-Micro...