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93 350 CTD...adding 2nd battery? #1394617 02/28/13 02:15 AM 02/28/13 02:15 AM
Joined: Jan 2003 Posts: 4,448 Phoenix, AZ M MoparBilly OP master
MoparBilly OP master M Joined: Jan 2003 Posts: 4,448 Phoenix, AZ	Seems I'm constantly fighting to keep enough battery in my truck. The 12 Valve and killer stereo system and pulling trailers...so I'd like to add a second battery...any aftermarket kits to do this, or will I have to fab it up myself?? "Livin' in a powder keg and givin' off sparks" 4 Street cars, 5 Race engines

Re: 93 350 CTD...adding 2nd battery? [Re: MoparBilly] #1394618 02/28/13 02:45 AM 02/28/13 02:45 AM
Joined: Jan 2003 Posts: 12,043 State of Confusion hp383 Just a normal tag again
hp383 Just a normal tag again Joined: Jan 2003 Posts: 12,043 State of Confusion	Im not sure about the kits, but is your truck using an actual diesel rated battery? It seems that many parts stores are selling a non-diesel battery in place of the OEM type replacement. Not sure why, but as an example O'Reilly's doesn't even list a battery for the 93 CTD trucks. So they often just sell the group 27 battery to customers. I don't know if there would be room on the passenger side near the air box or not for a second. My truck had a second battery on the frame rail under the box, a fabbed battery box was attached to the frame, and lead wires ran along the inner frame rail, up to the main battery. Join the Penguin Liberation Front!! Stop the Hippo Occupation!

Re: 93 350 CTD...adding 2nd battery? [Re: MoparBilly] #1394619 02/28/13 09:49 AM 02/28/13 09:49 AM
Joined: Jan 2003 Posts: 8,021 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,021 Tulsa OK	Quote: Seems I'm constantly fighting to keep enough battery in my truck. The 12 Valve and killer stereo system and pulling trailers...so I'd like to add a second battery...any aftermarket kits to do this, or will I have to fab it up myself?? Are you running a group 31 battery? The interstate part would be 31P-MHD which is a 950CCA. You might actually be able to go down some in CCA to help increase service life since you live in AZ, an Interstate part for that would be a 31P-LHD 750CCA. I work for interstate in case you couldn't tell, but those part numbers should be easily crossed by anyone. I had a 92 for awhile that had a 6 year old battery in it and it started fine even in single digit temps. It lacked the killer stereo though. With as easy as those rotary pump motors start you could probably just hang a hand crank out the front that you could kick before you get in . My friends and I joked that you could start my old 92 beater by hitting the alternator pulley with a hammer lol. 68 Barracuda Formula S 340

Re: 93 350 CTD...adding 2nd battery? [Re: Bad340fish] #1394620 02/28/13 01:54 PM 02/28/13 01:54 PM
Joined: Jan 2003 Posts: 12,043 State of Confusion hp383 Just a normal tag again
hp383 Just a normal tag again Joined: Jan 2003 Posts: 12,043 State of Confusion	Hey Bad340fish, Does Interstate make a dual terminal in a group 31 or a group 27? Im looking for one to replace the discontinued Super Start Premium that went bad. Join the Penguin Liberation Front!! Stop the Hippo Occupation!

Re: 93 350 CTD...adding 2nd battery? [Re: MoparBilly] #1394621 02/28/13 09:59 PM 02/28/13 09:59 PM
Joined: Nov 2008 Posts: 5,954 Greenville, PA redraptor master
redraptor master Joined: Nov 2008 Posts: 5,954 Greenville, PA	Quote: Seems I'm constantly fighting to keep enough battery in my truck. The 12 Valve and killer stereo system and pulling trailers...so I'd like to add a second battery...any aftermarket kits to do this, or will I have to fab it up myself?? If your alternator can't keep up then eventually you will kill the 2nd battery. They should also be matched (new) if you go thru with it.

Re: 93 350 CTD...adding 2nd battery? [Re: redraptor] #1394622 02/28/13 10:44 PM 02/28/13 10:44 PM
Joined: Jan 2003 Posts: 12,043 State of Confusion hp383 Just a normal tag again
hp383 Just a normal tag again Joined: Jan 2003 Posts: 12,043 State of Confusion	Quote: Quote: Seems I'm constantly fighting to keep enough battery in my truck. The 12 Valve and killer stereo system and pulling trailers...so I'd like to add a second battery...any aftermarket kits to do this, or will I have to fab it up myself?? If your alternator can't keep up then eventually you will kill the 2nd battery. They should also be matched (new) if you go thru with it. A battery isolator is something to consider as well. It will also help to prevent total loss of both batteries. Say you wire a pair up parallel to get a dual battery feed to power the vehicle electronics, and the second for the accessories, they all share the battery power. If you leave the lights on, or run the stereo too long you could possibly drain the batteries to the point they would leave you stranded. With the isolator, the vehicle power can be isolated from the accessories, then if you drain one battery, you still have the other to get you going again.

Re: 93 350 CTD...adding 2nd battery? [Re: MoparBilly] #1394623 02/28/13 11:23 PM 02/28/13 11:23 PM
Joined: Jan 2003 Posts: 43,522 Round Lake Beach, Illinoisy Rhinodart Rhinotruck
Rhinodart Rhinotruck Joined: Jan 2003 Posts: 43,522 Round Lake Beach, Illinoisy	I have the same issue with my 93. Nobody makes the right battery anymore, I am using a group 65 that was in my 2004, but of course there are two of them. I will be watching this thread and I WILL buy one of those isolators as I have a battery on the back of my ramp truck to run the winch and it is cabled to the start battery. The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it. JB Rhinehart, Realist A-Body's RULE!

Re: 93 350 CTD...adding 2nd battery? [Re: Rhinodart] #1394624 02/28/13 11:30 PM 02/28/13 11:30 PM
Joined: Jan 2003 Posts: 8,021 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,021 Tulsa OK	Quote: I have the same issue with my 93. Nobody makes the right battery anymore, I am using a group 65 that was in my 2004, but of course there are two of them. I will be watching this thread and I WILL buy one of those isolators as I have a battery on the back of my ramp truck to run the winch and it is cabled to the start battery. Go to interstate and use the part numbers I mentioned above. I usually have over 40 on hand and I would guess the same around the country. Any farm supply should carry that style. 68 Barracuda Formula S 340

Re: 93 350 CTD...adding 2nd battery? [Re: hp383] #1394625 02/28/13 11:32 PM 02/28/13 11:32 PM
Joined: Jan 2003 Posts: 8,021 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,021 Tulsa OK	Quote: Hey Bad340fish, Does Interstate make a dual terminal in a group 31 or a group 27? Im looking for one to replace the discontinued Super Start Premium that went bad. Nope no dual terminal. You could use a marine 27 cranking battery and have an automotive post and a 5/16th stud. 68 Barracuda Formula S 340

Re: 93 350 CTD...adding 2nd battery? [Re: Bad340fish] #1394626 03/01/13 04:48 AM 03/01/13 04:48 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	My buddy uses a semi truck battery in his 93. He also wants to add in a second battery but I think space is the issue.

Re: 93 350 CTD...adding 2nd battery? [Re: DaytonaTurbo] #1394627 03/01/13 11:39 AM 03/01/13 11:39 AM
Joined: Dec 2005 Posts: 1,261 Canada L Lugnutz pro stock
Lugnutz pro stock L Joined: Dec 2005 Posts: 1,261 Canada	I run a group 31 Interstate battery in mine and its rated at 1125 CCA............I occasionally pull a single car hauler trailer and haul my travel trailer with it. I don't have a killer stereo but do have a portable winch for those just in case moments.No problems.

Re: 93 350 CTD...adding 2nd battery? [Re: Lugnutz] #1394628 03/03/13 10:39 PM 03/03/13 10:39 PM
Joined: Nov 2005 Posts: 522 Lenox Iowa M MMiller mopar
MMiller mopar M Joined: Nov 2005 Posts: 522 Lenox Iowa	I'll have to go look, but on my 93 and my 85 I bought two 700 or 800 CCA batteries, and turned them sideways and put them on the same tray. I had to make a new hold down, and some short cables to tie the two batteries together. This way I end up with 1400 or 1600 CCA without trying to track down an expensive/elusive battery. Now both my trucks carry a relativly generic battery that away from home I should be able to find at nearly any parts store. Michael 93 W250 CTD getrag, Bosch 185 injectors, AFE air filter. Trailer puller, daily driver, 90 W250 CTD 727 with smokin 5" stacks. Off road truck 75 Dodge W200 440 4spd 4x4 locked front and rear, twin disc clutch, E85. Pulling truck

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