Battery Draining
#1
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Join Date: Dec 2015
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Model: Cherokee
Battery Draining
Hello there,
My issue is kind of complicated, but I'm posting here for opinions.
I have a 2000 Jeep Cherokee Sport 4.0
I have a 1100 Watt Amp with 10 inch Kicker Sub. (Set up is decent and got it new from a friend for present)
I have installed 240 Amp Alternator which I have had tested and is putting out 240 Amps
Installed Yellow Optima Battery
-750 CCa
870 CA
Also have aftermarket headlights
97-01 Jeep Cherokee Halo LED Projector Headlights
2 Hella Lights - which are around 200-250 Watts each
When I have all of this stuff turned on
INCLUDING
-Heater
- Rear Defrost
-Windshield Wipers
Then I hit my window swich my battery will begin moving from 13.7 Volts
to around 12.2 Volts
This is a large drop, any ideas as to why? Very confused as my friend has almost same set up and hitting his windows switches his Voltage only drops to about 13.4 Volts
Feedback Please
PS
I do not have a Capacitor on my Amp/ Sub setup Just ordered a 2 Farand one will be arriving 12/27
My issue is kind of complicated, but I'm posting here for opinions.
I have a 2000 Jeep Cherokee Sport 4.0
I have a 1100 Watt Amp with 10 inch Kicker Sub. (Set up is decent and got it new from a friend for present)
I have installed 240 Amp Alternator which I have had tested and is putting out 240 Amps
Installed Yellow Optima Battery
-750 CCa
870 CA
Also have aftermarket headlights
97-01 Jeep Cherokee Halo LED Projector Headlights
2 Hella Lights - which are around 200-250 Watts each
When I have all of this stuff turned on
INCLUDING
-Heater
- Rear Defrost
-Windshield Wipers
Then I hit my window swich my battery will begin moving from 13.7 Volts
to around 12.2 Volts
This is a large drop, any ideas as to why? Very confused as my friend has almost same set up and hitting his windows switches his Voltage only drops to about 13.4 Volts
Feedback Please
PS
I do not have a Capacitor on my Amp/ Sub setup Just ordered a 2 Farand one will be arriving 12/27
#5
CF Veteran
Join Date: Jul 2013
Location: Monett, MO.
Posts: 7,554
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Year: 1999
Model: Cherokee
Engine: 4.0
It seems that it would be a very rare occasion when all of these were on at the same time if at all in any real usage.
You did upgrade all wiring with the alt, big battery, and the amp?
You did upgrade all wiring with the alt, big battery, and the amp?
#6
CF Veteran
Break out the volt meter and turn it all on. Get in there and check for voltage drops across all your major wires, the batt to the alt, the big ground to the batt, all the grounds,..bad connections are in play here. Batt terminals. Everywhere. Then drive down and have the charging system checked at autozone.