Explain consequences of internal short circuits in VRLA Batteries.?
489342
A VRLA battery is a basic lead acid battery and an internal between one or a number of cells will render it useless.  An internal short will prevent that cell from working (will produce no EMF) and so the output voltage of the battery will be reduced by the amount that would be given by that cell.\nBattery no good I'm afraid and no chance of recovering it.\nP.
645621
http://www.swa.org/site/hhw/batteries2/hhw_batteries2.htm
1113235
Could be a dead battery. The lifetime of lithium ion batteries varies with temperature, number of recharge/discharge cycles and percent of discharge and percent of recharge. Complete, 100% recharges actually shorten the lifetime, but, complete discharges are worse. Partial discharges and partial recharges can lengthen the usable life. The lower the storage temperature, the better, but, DO NOT freeze. High heat, such as in a vehicle or storage building in summer drastically shortens the expected lifetime. A lithium ion battery's normal lifetime is about 3, maybe 4 yrs. Best longtime storage is at 40ish degrees F with about 40% charge. ( just the battery, not the device )
900198
<>There are issues with some laptop batteries overheating and causing fires.  I suggest you call Dell support and tell them about this ASAP.
82587
You guys are both right--good answers.  Junction temperature also can affect the voltage drop.
500850
Rechargable batteries can only handle a certain number of charge discharge cycles so if you discharge the battery before charging it you will actually shorten the life of the battery as opposed to simply charging it when you get a chance.
418331
Possibly "statistical fluctuations in charge generation" as mentioned in ref. 1. From ref. 2, which refers to "fundamental limits imposed by charge generation statistics", I get the impression that these variations may be an irreducible error source.
142453
All RVs are set up to charge the "house" batteries when driving, but there are a few conditions which may need to be met:\n\n1.  Some have intelligent battery isolators which will charge the chassis (engine starting) battery only, until it's full, then begin transferring power to charge the house batteries.  (Possible failure point is if the chassis battery has low voltage due to age or failure, the intelligent isolator will never give up trying to charge it and ignore the house batteries.)\n\n2.  All RVs have some type of batter isolator, and some of them are prone to failure.  (You probably have a "battery combine" button, which is used to link the two batteries when you need extra power for starting the engine.  That's an override for the isolator.)  Follow the positive lead from the chassis battery to find the isolator.  If it's a silver cylinder about the size of a shot glass, the simplest solenoid-type isolator, it's probably dead as they seem to fail every year or two.  But they're easy and less than $25 to replace.
960408
http://www.eas.asu.edu/~holbert/ece201/kvl.html
711151
its called corrosion.  When a battery leaks acid it will have white crusty stuff on them.  DO NOT touch it.
122955
You would wire them in parallel so that the voltage would be the same across each of them, because in parallel the amperage increases, not the voltage.  If you were to wire them in series, then the voltage would add to 48 volts, which would destroy your electrical system.  You would likely need a better alternator to handle the charging of all of these batteries, too but I'm not sure on the specs of an alternator that you'd need.
502455
In order to get 12V, you would need 8 AAA's in series (1.5V per).  Now, how many of those series combinations of batteries needs to be attached in parallel to safely provide the 500A?\n\n-AAA's have a rating of about 1000 mA-hrs = 1 A-hr (see Wikipedia source).\n\n-CCAs is defined as the battery's current draw for 30secs and not fall below a certain voltage (Battery FAQ).\n\nThe bare minimum number of parallel branches would be something like this: (A-hr ratings add in parallel)\n\n(500A)x(30sec/3600)= branches x 1 A-hr\nbranches = 4.17 => 5\n\nBut that would almost drain your battery pack within only 30 seconds, subject each branch to 100A (500amp/5), and probably force the voltage below 12V at some point.  I'm not sure what the safe current rating of AAA batteries is, but likely a little bit below 100A, haha.\n\nI would say well above 5 parallel branches to be re-usable/safe.  Maybe 500 branches would be safe and usable (though impractical).  Then you only have 1A through each branch and could start the engine about 120 times (30secs per start => 3600sec => 1hr).\n\nbatteries = 500 branches x 8 per branch = 4000... yikes
913372
It doesn't really have one. Its just a useful way of characterising the battery's behaviour.\n\nBatteries approximate to perfect voltage sources - in other words, the voltage across them does not drop no matter how much current you draw. (By contrast, solar cells approximate to perfect current sources).\n\nOf course, in reality the voltage does drop a little, and drops more the more current is drawn. The relationship is almost a straight line for small currents, and so it is useful to know the rate the voltage drops as the current increases, or dV/dI. Now of course the units of volts/amps is ohms.\n\nWhere this relationship is linear (small currents) you can also usefully include the internal resistance as a fictitious resitance in a circuit - it will do just as well as accounting for the change in voltage (can you see why?).
786641
There are some battery management parts that look at 2 input voltages and are designed to give steady output if a part goes from being plugged in to battery. I'd check Maxim www.maxim-ic.com for some of their parts. You can always diode OR two supplies together, which will load share if equal, or give preference to the higher voltage if greater than the other by a diode drop.
631579
2 electrodes and a battery
748539
CMOS batteries are quite inexpensive, much cheaper than a new drive.  However, they rarely fail.  When I read the title of your question, I thought jumpers, but it it was working, that's not it.  Most likely the onboard drive controller has failed.
457188
There are Lead Acid type, sealed batteries, Nicad batteries etc, describing all here is difclt, try web sites like wikepedia etc