Running RV deep cycle battery in f-350. - F-Series & SuperDuty Diesel Forums

entropyjones · 10-15-2011, 10:09 PM

I have a 2001 F-350 super duty. One of the batteries in the truck died. The one on the drivers side if it matters. The truck will still crank and runs fine. Although once it didn't since that battery died and I had to jump the truck to get it going again. But that was a month ago and no problems since then.

I was wondering if I can replace this battery with an interstate, SRM-27 deep cycle battery. It says for marine and RV. I don't need it as an RV battery anymore and I'd like to save myself some money and put this thing in my truck.

Any thoughts? Is this stupid?

DaveBen · 10-15-2011, 11:11 PM

It is generally considered good practice to change the batteries both at the same time with the same battery type. What you really is one battery, in two places. The right side has the right half of the battery and the left side has the left half. If you don't change them at the same time and with the same battery type, one battery will do most of the work and go bad very soon, and the other will tag along. I realize money is tight and you don't want to spend any more than is necessary. You had better dig some more for he cost of two batteries.

Dave

BIG JOE · 10-16-2011, 12:15 AM

Not a Stupid question, but what Dave sez is VERY, VERY true.

These PSD's need Strong, Clean voltage & amps, from a pair of batteries of the same brand*, type and group.. if not.. yer asking for All Kinds of troubles.

Joe

*preferably, with the same Build date.

iracemine · 10-16-2011, 07:46 AM

Also deep cycle batteries cant give off the needed quick high voltage that this giant starter needs. Deep cycle batteries are designed to let of electricity slowly and for a longer period. Using a deep cycle to start these trucks will kill the plates in them, and might not get the motor spinning fast enough for it to start.

Deerjager · 10-16-2011, 07:00 PM

Gotta concur with Dave. Just a plain good practice to replace both at the same time. Just replaced both of mine back in March.

rray32539 · 10-17-2011, 03:14 AM

Bad batteries make for some weird and unexpected juju in these trucks. In my case it made the speedometer read 30 miles per hour even when it was standing still. A battery test indicated the right side battery was toast. Replaced both original batteries at four and a half years, the speedometer error cleared right up once the new batteries were installed. The dealer couldn't figure it out either, but these trucks need clean, steady power from the batteries. In this case it saved me nearly a grand for a new instrument panel. The Motorcraft batteries weren't cheap, but they do the job.

entropyjones · 10-17-2011, 10:52 AM

Thanks for the advice guys. I went ahead and replaced both batteries. 200 bucks at wallmart. Ouch. But now I got plenty of juice for the 1700 mile trip I'm starting today.

BTW.. Rray, by bad juju could it possibly have something to do with why my AC will cut out on really hot days? The fan keeps running but it doesn't blow out cold air anymore. I got a refill kit and charged it 54 lbs which was 1 lb less than the temperature of the day warranted. It was only down to 51 or so when I charged it but to get it those 3 extra lbs cost most of the can. I didn't want to risk overfilling it so I figured 1 lb under would be good enough.

I dont think I have a leak in the ac system. There has never been a time when the AC did not work. It just got to where it doesn't work really good on hot days.

odellrivera · 10-20-2011, 05:59 AM

Need details regarding the capacity , voltage and rating supported by SRM-27. Thanks in advance.

JLDickmon · 10-21-2011, 06:44 AM

No. Do not use a marine battery in these trucks.
Marine/RV batteries are designed to supply low current at steady voltage for a sustained period of time.
Auto/LT batteries are designed to give a large, high-current burst for a few seconds.

In other words, it ain't gonna be skippy for your electrical system.

BIG JOE · 10-21-2011, 09:48 AM

Quote:

Originally Posted by JLDickmon

No. Do not use a marine battery in these trucks.
Marine/RV batteries are designed to supply low current at steady voltage for a sustained period of time.
Auto/LT batteries are designed to give a large, high-current burst for a few seconds.

In other words, it ain't gonna be skippy for your electrical system.

My take on it too.. so X2.

I ran a pair for awhile a few years ago, wasn't happy with the CCA's (burst) for starting. They're in my Boat now.

Joe

.

10-15-2011, 10:09 PM	#1
entropyjones SDD Junior Member Join Date: Jul 2011 Location: town, Co Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	Running RV deep cycle battery in f-350. I have a 2001 F-350 super duty. One of the batteries in the truck died. The one on the drivers side if it matters. The truck will still crank and runs fine. Although once it didn't since that battery died and I had to jump the truck to get it going again. But that was a month ago and no problems since then. I was wondering if I can replace this battery with an interstate, SRM-27 deep cycle battery. It says for marine and RV. I don't need it as an RV battery anymore and I'd like to save myself some money and put this thing in my truck. Any thoughts? Is this stupid?

10-15-2011, 11:11 PM	#2
DaveBen SDD Senior Member Join Date: May 2005 Location: Ukiah, California Posts: 7,869 Thanks: 127 Thanked 506 Times in 489 Posts	It is generally considered good practice to change the batteries both at the same time with the same battery type. What you really is one battery, in two places. The right side has the right half of the battery and the left side has the left half. If you don't change them at the same time and with the same battery type, one battery will do most of the work and go bad very soon, and the other will tag along. I realize money is tight and you don't want to spend any more than is necessary. You had better dig some more for he cost of two batteries. Dave __________________ 2004 F-350 Regular cab with 6.0, Torqshift, 4X4, and just about all of the rest of the options. I added Guages, Satellite Radio, Air Horns, and a coolant filter. Bilstein shocks. Battery Desulphater that really works. Installed Jimmi Jammers. Pictures here: http://community.webshots.com/user/dbennett48 Completely Stock. I had a Detroit Diesel 8V92TA in a KW dump truck in 1980. That sucker would put out 425 hp but would never out pull a CAT. Last edited by DaveBen; 10-15-2011 at 11:13 PM. Reason: spellin

10-16-2011, 07:46 AM	#4
iracemine black and tan Join Date: Dec 2006 Location: Cheese Curtain Posts: 914 Thanks: 46 Thanked 44 Times in 40 Posts	Also deep cycle batteries cant give off the needed quick high voltage that this giant starter needs. Deep cycle batteries are designed to let of electricity slowly and for a longer period. Using a deep cycle to start these trucks will kill the plates in them, and might not get the motor spinning fast enough for it to start. __________________ coolant filter (dieselsite), CCV Mod (home made), 4" MBRP turbo back (dieselsite), turbo temp monitor (ISSPROdieselsite), DIY triple gauge kit (ITPdeisel), "fuel filler mod" (home made), stock 7.3 99.5' 2WD W/ more power than I need. Be green... drink kegged beer! www.micromatic.com you'll thank me

10-16-2011, 07:00 PM	#5
Deerjager Meister Gewehr Join Date: Aug 2011 Location: Forest City, NC Posts: 190 Thanks: 4 Thanked 20 Times in 20 Posts View Photos By: Deerjager	Gotta concur with Dave. Just a plain good practice to replace both at the same time. Just replaced both of mine back in March. __________________ 2001 F-250 XLT CC SB 4X4, Auto & 3.73 gears 71K miles, AFE filter, Tuner, stock rims, changed head & turn lights over to '03, Rancho Shocks, MANIK brush guard, Added power driver seat and 3 bar light under tailgate, Muffler deleted, ZooDad Mod. LED lighting in camper shell. "The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."-Thomas Jefferson Liberalism is an insult to one's common sense! I was anti-Obama before anti-Obama was cool ! μολων λαβέ NRA Life Member

10-17-2011, 03:14 AM	#6
rray32539 High Tech Redneck Join Date: Jun 2005 Location: Nickajack Lake, TN Posts: 1,130 Thanks: 29 Thanked 14 Times in 13 Posts	Bad batteries make for some weird and unexpected juju in these trucks. In my case it made the speedometer read 30 miles per hour even when it was standing still. A battery test indicated the right side battery was toast. Replaced both original batteries at four and a half years, the speedometer error cleared right up once the new batteries were installed. The dealer couldn't figure it out either, but these trucks need clean, steady power from the batteries. In this case it saved me nearly a grand for a new instrument panel. The Motorcraft batteries weren't cheap, but they do the job. __________________ Richard Ray SSgt, USAF (Ret.) Life Member DAV In a campsite or parking lot somewhere in America Amateur Radio W4RLR "The Blue Beast" 2005 F-250 Lariat CC SB, 6.0 liter automatic, 4x4, upfitter switches, DieselSite coolant filter, Sirius-XM satellite radio, fifth-wheel hitch, Trifecta tonneau, clearance lights, rear camera, Garmin GPS, Yaesu FT-100D and FT-7800D amateur radio "Love Shack" 1995 Jayco Eagle 277 RBSS fifth-wheel, DirecTV with King Dome dish, Sirius-XM satellite radio, Sanyo flat-screen TV, rear camera

10-16-2011, 12:15 AM	#3
BIG JOE SDD Senior Member Join Date: Apr 2005 Location: CenCal Posts: 4,377 Thanks: 101 Thanked 392 Times in 381 Posts	Not a Stupid question, but what Dave sez is VERY, VERY true. These PSD's need Strong, Clean voltage & amps, from a pair of batteries of the same brand, type and group.. if not.. yer asking for All Kinds of troubles. Joe preferably, with the same Build date.

10-17-2011, 10:52 AM	#7
entropyjones SDD Junior Member Join Date: Jul 2011 Location: town, Co Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the advice guys. I went ahead and replaced both batteries. 200 bucks at wallmart. Ouch. But now I got plenty of juice for the 1700 mile trip I'm starting today. BTW.. Rray, by bad juju could it possibly have something to do with why my AC will cut out on really hot days? The fan keeps running but it doesn't blow out cold air anymore. I got a refill kit and charged it 54 lbs which was 1 lb less than the temperature of the day warranted. It was only down to 51 or so when I charged it but to get it those 3 extra lbs cost most of the can. I didn't want to risk overfilling it so I figured 1 lb under would be good enough. I dont think I have a leak in the ac system. There has never been a time when the AC did not work. It just got to where it doesn't work really good on hot days.

10-20-2011, 05:59 AM	#8
odellrivera SDD Junior Member Join Date: Oct 2011 Location: US Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts	Battery Need details regarding the capacity , voltage and rating supported by SRM-27. Thanks in advance. __________________ real estate las vegas

10-21-2011, 06:44 AM	#9
JLDickmon ursus combibo Join Date: Jun 2006 Location: 49041 Posts: 3,796 Thanks: 37 Thanked 265 Times in 249 Posts View Photos By: JLDickmon	No. Do not use a marine battery in these trucks. Marine/RV batteries are designed to supply low current at steady voltage for a sustained period of time. Auto/LT batteries are designed to give a large, high-current burst for a few seconds. In other words, it ain't gonna be skippy for your electrical system. __________________ John '99 F250 7.3L auto 4wd CC/SB

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