Charging issues... :(

[Renthal]

2001 Qx4
Is my alternator hooped?

It all started with a check engine light and the codes pointing to the MAF.
I pulled the MAF and cleaned it, but that didnt seem to help as the truck ran worse.
couple weeks later... my abs light came on, and airbag light, and the front speakers stopped working.. cleaned the battery terminals and that solved it.

replaced the MAF and battery last week with new ones and cleared the codes. I did buy a slightly smaller battery.. 810 CA's compared to 830 of my old nissan battery (it was all costco had) and the battery was slightly smaller in size.

I was driving the truck yesterday and after about an hour... then the ABS and airbag light came on, and the front speakers stopped working.. the truck started losing power and bogging like crazy.. i shut off the AC and the truck got more power and I made it home.
Went to start it today and new battery was completely flat..the truck just clicked when i turned the key.

I put it my old battery and it fired right up! is my alternator hooped?

[Leo1998]

Yep, alternator shot. I recently went through all that too, first the battery and then the alternator.