C182 pilot reported losing electrical power and squawking wrong code of 7500.

Attributes
ACN	1577058
Time
Date	201809
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Electrical Power
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 400 Flight Crew Total 950 Flight Crew Type 350
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence

Narrative:

On the way from ZZZ; the airplane lost electrical power. Enroute; I decided to activate the autopilot after which the alt circuit breaker popped out and the avionics started flickering. I notified it to ATC immediately and decided to request clearance to proceed back to ZZZ. I chose to go to ZZZ since I am familiar of the airport and had we lost [communications] proceeded to the original destination; I wouldn't have been able to pick up weather on the way. The radios became intermittent and then I squawked the 7500 by mistake. I intended to squawk 7600; but somehow entered the wrong squawk code. ZZZ TRACON somehow notified us on our intermittent radio and we corrected the squawk code. On our clearance back to ZZZ; I told ZZZ TRACON that we will shoot the RNAV xx approach and then we lost all radios completely. We landed uneventfully by using the foreflight app on my ipad. That was the best option in my opinion since I didn't have any navigation source remaining.

Original NASA ASRS Text

Title: C182 pilot reported losing electrical power and squawking wrong code of 7500.

Narrative: On the way from ZZZ; the airplane lost electrical power. Enroute; I decided to activate the autopilot after which the alt circuit breaker popped out and the avionics started flickering. I notified it to ATC immediately and decided to request clearance to proceed back to ZZZ. I chose to go to ZZZ since I am familiar of the airport and had we lost [communications] proceeded to the original destination; I wouldn't have been able to pick up weather on the way. The radios became intermittent and then I squawked the 7500 by mistake. I intended to squawk 7600; but somehow entered the wrong squawk code. ZZZ TRACON somehow notified us on our intermittent radio and we corrected the squawk code. On our clearance back to ZZZ; I told ZZZ TRACON that we will shoot the RNAV XX approach and then we lost all radios completely. We landed uneventfully by using the ForeFlight app on my iPad. That was the best option in my opinion since I didn't have any navigation source remaining.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.