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Battery on Ground

Old 12-01-2007, 08:59 AM
Fork Horn
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Join Date: Sep 2005
Location: ONTARIO
Posts: 128
Default Battery on Ground

Is it true that I should not store my deep cycle battery on the concrete garage floor. It is a plastic case, so why should it matter? Having a peice of plywood underneath should be good enough. Also should I keep it in the house for the winter, or is in the garage during the Canadian winter OK?
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Old 12-01-2007, 09:38 AM
Nontypical Buck
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Join Date: Jun 2005
Location: Grain Valley, MO.
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Default RE: Battery on Ground

I've been told that storeing a bat on the floor will discharge it is actually a myth. What actually discharges it is the dirt and moisture that will collect on top of the bat, createing a path for millavolts to travel between posts. Ive tested this in the shop during our pm schedule, and have seen as much as .6 volt going across the top of the battery. Keeping it on a board I think will help insulate it from the cold, but I would buy one of those battery tenders that will keep your bat at charge. Not a charger, those will continue to charge and will overcharge your battery and ruin it. Batteries to a live long life need to be cycled, which helps previent calcification on the plates. The battery tender will do just that, and they are cheap at any battery outlet, automotive store, or at your locat Wally world.
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Old 12-01-2007, 01:50 PM
Nontypical Buck
Join Date: Aug 2004
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Default RE: Battery on Ground

Store your battery fully charged
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Old 12-02-2007, 04:03 AM
Join Date: Nov 2007
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Default RE: Battery on Ground

A battery will discharge at the same rate, no matter if it is stored on concrete or not. Never let a battery sit for more than 6 months without being recharged.

Here is what battery manufactuerers have to say about battery storage:

Sealed Lead Acid Battery Storage

Power-Sonic Batteries should not be stored in a discharged state or at elevated temperatures. If a battery has been discharged for some time or the load was left on indefinitely, it may not readily take a charge. To overcome this, leave the charger connected and the battery should eventually begin to accept charge. Although Power-Sonic batteries have a low self-discharge rate which permits storage of a fully charged battery for up to a year, it is recommended that a battery be charged 6-9 months after receipt to account for storage from the date of manufacture to the date of purchase. Otherwise, permanent loss of capacity might occur as a result of sulfation. To prolong shelf life without charging, store batteries at 10 degrees Celsius or less.

Gaston: Lead-acid batteries previously were affected by long term storage after charging. But Gaston SLA batteries are not so affected. This battery offers longer extended storage than conventional batteries (referenced curve shows 3% per month self discharge rate at 20 degrees C.) During storage, carry out supplementary charging according to Table 3 (below 20 degrees charge every 6 months, 20 to 30 degrees C charge every 3 months, over 30 don't store). Although the self-discharge rate is low, specific precautions must be taken against the battery over discharging itself by self-discharge when in storage or not operating. In general, to optimize performance and service life, it is recommended that Gaston batteries which are to be stored for extended periods of time be given a supplementary charge, commonly referred to "top charging" periodically. The top charge referred to is a charge of 20-24 hours at a constant voltage of 2.4 volts per cell.
Spiral Wrapped Lead Acid Battery Storage
Hawker Energy Products

When a Cyclon battery is kept in storage, i.e. on open circuit, the ambient temperature should be controlled to prolong storage time and maintain maximum capacity over time. To get the best storage results, batteries should be charged at room temperature or below, and charged prior to being put back in service.

The OCV (open circuit voltage) of each battery must be monitored on an individual basis. If the OCV measures 1.93 Vpc, it has zero effective capacity and should be boost charged immediately. Even if the OCV reads higher than 2.00 Vpc at the end of 12 month's storage, the battery should be recharged before use. Thus, to maintain maximum reliability, batteries should be boost charged once every 12 months, or when the OCV reads 2.00 Vpc, whichever occurs earlier.

If the OCV is allowed to drop between 1.93 and 1.80 Vpc, some permanent damage may occur to the battery. However, if it drops to less than 1.80 Vpc, the battery will most likely be unchargable by conventional methods. Therefore, under no circumstances must the OCV be allowed to drop below 1.80 Vpc.

Just as high temperature accelerates the aging of a battery, so does it accelerate the self-discharge rate. Thus, when the storage temperature exceeds 25°C, one must monitor the open circuit voltage more frequently. . .

Flooded Lead Acid Battery Storage

Trojan: Periods of inactivity can be extremely harmful to lead acid batteries. When placing a battery into storage, follow the recommendations below to insure that the battery remains healthy and ready for use.

NOTE: Storing, charging or operating batteries on concrete is perfectly OK. The most important things to avoid: [ol][*] Freezing. Avoid locations where freezing temperature is expected. Keeping battery at a high state of charge will also prevent freezing. Freezing results in irreparable damage to battery's plates and container. [Freezing can happen between -19 F (40% charge) and -98 F (fully charged)][*] Heat. Avoid direct exposure to heat sources, such as radiators or space heaters. Temperatures above 80° F accelerate the battery's self-discharge characteristics.[*]Step by step storage procedure: 1. Completely charge the battery before storing. 2. Store the battery in a cool, dry location, protected from the elements. 3. During storage, monitor the specific gravity (flooded) or voltage. Batteries in storage should be given a boost charge when they show a 70% charge or less. Completely charge the battery before re-activating. [/ol] For optimum performance, equalize the batteries (flooded) before putting them back into service
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Old 12-02-2007, 12:26 PM
Nontypical Buck
Join Date: Nov 2005
Location: Mn.
Posts: 3,399
Default RE: Battery on Ground

Do you realize how much a person could of made marketing a battery board .A charged battery in a garage on the floor is not a problem.When we store boats for the winter in cold storage we leave them in the boat,just unhook a cable.
A clean battery wont have any trouble.
When I did Exide battery warranty's I would have to show the Farmers how a dirty battery loses charge across the top...Just like Mastevt said........You get a voltage draw across the top then you could take your fingerrun it across the top and WALA no draw......
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