My '04 DII has been giving me trouble when starting and, although it always starts, I'm worried that it might not when I need it to. What would be the best or least faulty battery I could put in her? Look at the POS that's in there now bwahaha
Here is an expensive option I may consider: http://www.interstatebatteries.com/c...s+II_V8%2f4.4L)

 

A good, largest that will squeeze in there battery. While cold cranking amps are important, don't neglect reserve capacity, which is how long you can drive with alternator out. Alternators don't always fail 100%, sometimes they just drop in amps so that your battery dies when AC, lights, and wipers are on for about an hour.

There are plenty of things that will keep a Disco from starting besides the battery. One of them is poor quality terminal connections and the places they bond to the chassis for grounds.

 

Thanks Savannah Buzz, I was hoping you would chime in!
The terminal connections could stand to be replaced but I keep them clean... Could you tell me where to check the chassis ground points?
Thanks

 

Locate the negative lead. Follow it to bolts on frame or chassis.

 

Appreciated

 

That seems like lot of money for a battery with only a 24 month free replacement.

 

You should be able to get a good battery with 36 month full replacement warranty and then prorated warranty after that for your needs. Diehard batteries are great and I like Interstate as well. The chain stores carry some with 36 month full replacement, Wal-mart, Autozone, Adv Auto, etc. I think size Group 31 or 34 is the largest that will fit in the battery box in a D2, but note that is not what most battery charts will call for, so know what you want when you go to buy.

 

with a minim of 800 CCA

 

Thanks for the help everyone!
I will post when I get a new one.

 

EDIT: This was wrong because my multimeter had a bad battery... The new readings are Battery=12.48v and Alternator=13.8v-------------

Time out! I just went out there and read the voltage with the multimeter and after sitting overnight the reading is around 19.5v
Maybe the alternator?
Used the RAVE:
Battery voltage
Open Circuit Voltage Test
Before commencing diagnosis of electrical problems, verify the condition of the battery is
acceptable by using the open circuit voltage test.
1. Switch off all electrical loads on the vehicle.
2. Adjust digital multimeter to read dc volts on the appropriate scale.
3. Connect test probes across battery terminals ensuring that polarity is correct and
record the voltage displayed.
A reading of 12.3V or more is acceptable; any battery which reads less than this will
need charging.
NOTE: If the vehicle has been used within a period of 8 hours prior to the test, surface
charge must be removed from the battery by switching the headlamps on for approximately
30 seconds. Wait a further 60 seconds before checking the open circuit voltage.
Battery voltage is used as a known reference for ascertaining whether or not circuits are
receiving sufficiently high voltage for components to function correctly. This reference is only
a guide since most electronic circuits are designed to function over a wide range of voltages.
In addition, consideration must be given to readings affected by voltage drop across certain
components and fluctuations due to cable lengths.