I recently replaced my battery and my alternator in my 2010 honda odyssey. After driving 15 miles to work and 15 miles back my battery light has come back on and I am just waiting for it to die again.. Does anyone have any ideas as to what is draining my battery? I have nothing plugged in to anything and my a/c has been off. Any ideas are appreciated.
Make sure all the connections are clean and tight:
- battery to body
- battery to alternator
- engine to body
- etc.
Check your alternator output, It may not be charging your battery.
Check Scotty's video on Parasitic Drain.
Was it working fine before you changed the battery and alternator?
No. Battery was completely drained so I replaced it and the new one drained instantly. So I replaced the alternator. Everything seems clean and tight. I am very confused. I will have to check the output of the Alternator I suppose. I just feel like something else is the cause. But I do not know what.
It could be parasitic draw.