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Old 01-30-2013, 08:39 PM   #1
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time for new batteries

Well its time for some new batteries. I was walking through a local manards and seen a exide 27 MDCST for 69 bucks. Thinking it said 105 at 20amp hours. Has anyone heard of these. Can't seem to find nothing about them on the web. Never used exide before so I can't say how good they are. Also been thinking about 6 volt batteries to. but don't know if the extra expense is worth it. Any thoughts.
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Old 01-31-2013, 03:07 AM   #2
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paying for two 6 volt batteries are only worth the cost, if you dry camp or boondock a lot!
for us, we rarely have any hookups, so we have two 12v deep cycle batteries.
i didn't go with the 6v due to them being taller and would have interfered with the electric tongue jack motor.

i don't think you have the right info on that battery. nothing came up on Google, except your post. you need to provide more info or a link to it.
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Old 01-31-2013, 08:11 AM   #3
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Can't seem to find that model number Exide battery.

However, none of the ones I did find are rated in Amp Hours. The Deep Discharge and Dual Purpose batteries are rated in RC (Reserve Capacity) and NOT Amp Hours.

Buying ANY battery that has CCA (Cold Cranking Amps) that does ALSO not list either RC or AH is a REAL bad idea because they are car starting batteries and not suited for RV use.

The plates are too thin and while they can give up a lot of amps quickly, they have no staying power and will only last a few hours when used as storage batteries.

Try leaving your radio on in your car (can't today because the computer will shut off the battery so you will need to find an EMP proof vehicle) for more than a few hours and try to start your car.

How can I convert 25 amp Reserve Capacity to Amp Hours at a 25 amp discharge rate?
************************************************** ****
To convert RC to Ampere-Hours at the 25 amp rate, multiply RC by .4167.

More ampere-hours (or RC) are better in every case when looking for a deep cycle battery. Within the same battery footprint or industry group size, the battery with higher ampere hours (or RC) will tend to deliver longer cycle lives. This conversion method will allow you to convert and compare competitive data.
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File Type: pdf Exide Golf Cart Battery Maintenance.pdf (3.04 MB, 63 views)
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Old 01-31-2013, 08:18 AM   #4
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Exide (exide.com), the official battery of NASCAR

RV Expert Center

Exide Batteries

October 2010 RV Product Reviews by Rich Howard
Print | Email


Planning to hit the road this season to check out some fall foliage? Better be sure your RV batteries are in good working order so that the expedition does not include waiting for a tow truck while trying to enjoy some autumn beauty. To power an energy-hungry “home away from home”, RV batteries must reliably perform a number of jobs on both starting and deep-cycle fronts. They not only have to start the engine, but they also must run lights, water pumps, heat, appliances, and more. Given this tall order, what’s imperative for a problem-free excursion is that you have installed the right batteries and that they are properly maintained.



Battery Types
The battery used to start and run the engine is referred to as a starting battery. Starting batteries are designed to deliver high bursts of power over short periods of time. These batteries are rated in Cold Cranking Amps (CCA). CCA is the number of amps the battery can deliver at 0 degrees Fahrenheit for 30 seconds and not drop below 7.2 volts. The power level you need depends on the cranking requirements of your engine. Starting batteries also are rated by Reserve Capacity. Reserve Capacity (RC) is the duration, in minutes, that a battery will deliver 25 amps at 80 degrees Fahrenheit. RC represents the time that the battery will continue to operate essential accessories in the event of an alternator or generator failure.

The batteries used to supply power to the RV itself are commonly referred to as house batteries. Your house batteries should be deep-cycle batteries. These batteries provide a steady amount of current over longer periods of time. Deep- cycle batteries are designed to be deeply discharged and recharged repeatedly and are rated in Ampere Hours (AH) and Reserve Capacity (RC).

The AH rating is the number of amperes (amps) that a battery can deliver for a 20-hour period. This test also is referred to as the 20-hour rate. The larger the AH rating, the more power the battery can deliver over time.

Battery Life
The life expectancy of an RV battery will vary, based on the habits of its owner. An RV battery can last anywhere from one year to many, depending on how the batteries are used, how they’re maintained, discharged, recharged, and how they are stored. If the RV spends most of its time plugged into an electrical source, the main concern will be maintaining your deep-cycle battery and not so much on getting the highest AH. On the other hand, if you really like to get away from it all and consider hookups optional at best, you will want to find a deep-cycle battery with the highest AH capacity you can fit in your RV.

Sizing It Up


Deep-cycle batteries come in a variety of sizes and have varying AH ratings. Some are designated by group size (24, 27, and 31). Depending on your needs and the space available in your RV, there are a number of several battery selection options, including:
  • One 12-volt group 24 deep-cycle battery that provides 70 – 85 AH.
  • Two 12-volt group 24 wired in parallel that provide 140 – 170 AH.
  • Two 6-volt golf cart batteries; when these are wired in a parallel series, they provide 180 – 220 AH. (Many RVers have switched from standard 12-volt batteries to exercise this option).
Note: Parallel connections (+) to (+) and (-) to (-) increase the AH rating by the number of batteries used in the circuit, but not the voltage.
Serial connections (+) to (-) and (-) to (+) increase the voltage but the AH rating is the same as a single battery

When making either a parallel or serial circuit all batteries must be the same rating, age, and design type. It is extremely important not to mix battery types (Flooded, Gel, AGM).

The next time you visit a Camping World location, look for a full selection of Exide batteries for all your RVing needs. Exide Technologies (exide.com), the official battery of NASCAR® and one of the world’s largest producers, distributors and recyclers of lead-acid batteries, is now the Official Battery Supplier of Camping World. Here are just a few of the batteries in the Exide lineup that will help keep you on the road:



Exide® Stowaway® Deep Cycle
  • Up to 400 minutes of Reserve Capacity
  • An amp hour rating of up to 200 AH for continuous operating time
  • A design that incorporates thicker grids, denser active materials on the plates, and alloys specifically designed to provide many cycles
  • 12-month free replacement and 24-month limited warranty
Exide® XTRA Golf Cart
  • Up to 525 minutes of Reserve Capacity
  • Amp hour ratings of up to 245 AH (20 hour rate) for increased service life per charge cycle
  • Heavy-duty sheet separators with antimony suppression extend life and reduce water loss throughout the battery’s life
  • 12-month free replacement warranty
Exide® NASCAR® Extreme™
  • Available in a wide variety of group sizes and power levels to fit 70 percent of the cars, trucks and SUVs on the road today
  • Heavy-duty grids versus ordinary car batteries provide enhanced durability under today's harsh operating conditions
  • 40-month free 24-hour emergency jump start assistance
  • 40-month free replacement and 108-month limited warranty
Exide® RoadForce® AGM 200
  • 2X better cycling and 40 percent greater charge acceptance when compared to conventional flooded batteries
  • 14X more vibration resistance than conventional flooded batteries
  • Designed for maintenance-free performance under normal operating conditions
  • Over-the-top handle allows for easy installation and folds out of the way after installation
  • 24-month free replacement warranty
Exide® Super Crank®
  • Separators improve acid flow and resist vibration damage
  • A design that provides maintenance-free performance under normal operating conditions
  • 6-month free replacement warranty
Exide offers a comprehensive range of batteries designed to deliver reliable starting and deep-cycle power for a host of energy-hungry specialty applications.
To learn more about the complete line of Exide products, please visit the Camping World location closest to you. Happy trails!


Battery Maintenance


Most RV batteries require some maintenance – even “maintenance-free” ones. A few simple steps go a long way to help batteries clean and free of corrosion:
  • Clean terminals regularly and coat with a battery terminal spray.
  • Check the electrolyte level monthly. All Exide deep-cycle batteries, except AGM sealed types, have removable caps so that electrolyte levels can be monitored regularly.
  • When storing a battery for the winter, check and fill with distilled water as needed, recharge the battery fully, and store in a cool place.
  • When preparing the battery for use after winter storage, recharge the battery to its full charge state.
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Old 01-31-2013, 08:48 AM   #5
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I have personal experience with exide batteries, they are a dual purpose design and not a true deep cycle battery. I just upgraded from a exide to a deep cycle and what a difference in reserve capacity! It's a bigger battery but if you have the space it's the way to go.
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Old 01-31-2013, 08:55 AM   #6
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Quote:
Originally Posted by Kableguy007 View Post
I have personal experience with exide batteries, they are a dual purpose design and not a true deep cycle battery. I just upgraded from a exide to a deep cycle and what a difference in reserve capacity! It's a bigger battery but if you have the space it's the way to go.
Many people do not understand the difference.
Thank you for your input!
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Old 01-31-2013, 04:47 PM   #7
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Thanks Herk, experience is a great teacher!
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Old 01-31-2013, 08:22 PM   #8
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picture of battery

This is a picture i got of the battery on their shelf. can't find nothing about it on their website either.
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Old 01-31-2013, 08:39 PM   #9
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Seriously! 105 AH Deep discharge for 69 bucks?

A pair of those would be in my camper before the check cleared.
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Old 01-31-2013, 09:27 PM   #10
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A good buy you think? Coming home after I got the picture I decided to stop at a auto parts store and see what they had. Exide MDC 27 not the MDCST. Asked on price. They said 115 with a 10 dollar core. Asked if they would price match. Sure he said. told him about the MDCST at manards for 69 bucks and showed him the picture. Response was I took a picture of a cheaper battery price and was trying to rip them off. They called down there and was told that was the correct price. Then was asked to leave! Maybe I should go get some.
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