Battery Drains

[Red-R/T]

2014 Reg Cab Sport R/T with 5.7 V8 and 8 Speed Trans.
I get a low battery and have to use a jump starter. Went to Ato Zone and they said battery, alternator and starter are good.
I charged battery and left it unhooked from the truck. Stayed charged. Hooked it up to the truck and it drained down to 8.8 volts. Need suggestions on what to try next.
Please help.

 

[daveray9]

Search fuel pump relay.. I cant search on the app but will share some threads when I get near a PC

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[Badger 13]

You could start pulling your fuses out one at time to check for a parasite draw. If you get a "spark" putting them back in, that could be your culprit circuit.

 

[daveray9]

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[Red-R/T]

UPDATE
After a couple of days of using a Jump Starter to go anywhere I went back to Auto Zone and a different parts guy decided the battery was bad. New battery and all is well.