Which battery - JeepForum.com
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post #1 of 6 Old 11-09-2019, 08:39 AM Thread Starter
green199newbee
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Which battery

Good morning
I have a 1999 XJ 4.0 and am going to put a winch on the jeep. My battery is fine but have been told the winch will kill an average battery when it is time to use it. Truth??? What batteries are you running. I am on a tight budget and really do not want to spend $250 for a unnecessary large CCA battery if not necessary! Thanks ahead of time?

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post #2 of 6 Old 11-09-2019, 05:58 PM
rjbruzan
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Most likely a group 34. I prefer an AGM because its totally sealed and wont leak acid. One of the best out there is NorthStar. About $250 from Batteries plus with a discount if you order it ahead. The one in my TJ is 8 years old and going strong. I bought a new one for it and current one will go in my daily driver WJ.
My XJ beach truck has a less expensive Duration brand AGM (about $160 at Farm and Fleet) thats 7 years old and strong as when new.
XJ and TJ have winches that get used/abused.
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post #3 of 6 Old 11-10-2019, 12:40 AM
2oldjeeps
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i would do step one,add the winch and mess with it.
see how that goes b4 any battery work...probably need nothing else.
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post #4 of 6 Old 11-12-2019, 11:42 PM
rep-tile
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Lead acid batteries are not designed to go full or near full discharge and life span can take a big toll if they do. Deep cycle AGMs on the other hand won't care. I have Odysseys on both Jeeps. Don't think you'll find many brands with twice the crank power and 4 year full replacement out there.

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post #5 of 6 Old 11-18-2019, 09:35 PM
cpttuna
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Set your 99 up for extended idle. this will also help
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post #6 of 6 Old 11-18-2019, 10:16 PM
RevScott
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Quote:
Originally Posted by green199newbee View Post
Good morning
I have a 1999 XJ 4.0 and am going to put a winch on the jeep. My battery is fine but have been told the winch will kill an average battery when it is time to use it. Truth??? What batteries are you running. I am on a tight budget and really do not want to spend $250 for a unnecessary large CCA battery if not necessary! Thanks ahead of time?
A damn good battery Isolator, a continuous duty solenoid, with a dash switch and a second full sized battery that matches your primary. Your Winch gets hooked to the secondary battery, a heavy welding cable goes between the positive posts of the batteries, the solenoid gets spliced into this cable with the on off switch dash mounted and the heavy duty battery isolator mounted between the two batteries and the alternator. Your primary bat will always stay charged, as will the secondary your winch will NEVER drain the primary unless you flip the dash switch on, energizing the solenoid for extra power. This will also allow you to jumpstart yourself with the aux (secondary battery) providing everything is wired properly. Ive been running a setup identical to this for decades, with the addition of a plug in jumper cable with the socket mounted in the grill. Just plug my vehicles end of the cables into the socket and the clamps are on the other end. The plug/sockets are identical to those used to recharge electric forklifts and are available at most industrial supply stores. The clamps and cables are cheapest by buyinga good set of jumper cables, and cutting one set of clamps off. One other thing, since the battery isolator is made of two LARGE Diodes that prevent current from flowing back into the alternator, this will protect your electrical system from damage by jumpstarting other vehicles as well as spikes generated by stalling out a winch.
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