You can rub the tips of the batteries together for 5 min and they will work for 15 more min. I would like to tell you 3 tips about chargering your battery 1\ Your new laptop… battery requires three complete charge/discharge cycles before use and achieving maximum capacity. It means the battery would have to be charged fully and then be discharged fully. Repeat it three times before starting to use the battery. By this way, battery's internal chemical materials can be activated and its internal chemical reaction can come into the optimal state. After the activation, the battery can be charged and used freely. But the battery will have to be discharged completely once a month so that the battery activity can be released by such deep discharge and battery life can be maintained. 2\ If battery is idle for over 3 months, it is also necessary to conduct 3 cycles of complete charge and dsicharge to ensure that the battery is activated. Please remember not to overcharge continually, or it will shorten the battery's life. Furthermore. It also needs three complete discharge/ charge cycles before starting to use it. Most users are used to using Alternating Current instead of a battery for power supply when they use laptops. Actually the battery needs to be used at least once or twice per month to release the battery power completely. Then fully charge the battery with AC power once. Please remember that it is always good for rechargeable batteries to use up the battery power before giving them a full charge. Because the li-ion battery used by laptop has its own laziness and would lose its activeness when being idle for long time. It needs to be reactivated. 3\ It is suggested to take out the battery from laptop when it uses AC power supply indoor to avoid having the battery get charged frequently. It is also suggested to shut down the laptop so that battery can be fully charged. Do not remove the AC power during charge. In addition, the power of battery can easily be used up and most laptops have only one battery. COMPAQ 367759-001 Battery http://www.global-battery.co.uk/laptop-batteries/compaq-367759-001.htm For a common laptop, the best charge method is to turn off the laptop when its battery is being charged. The charge time will be shortened by 30% by this method. ( Full Answer )
Not sure if the question is what to charge the battery with or how to charge the battery. So, I will address both: A regular battery charger can be used. IF you are going to p…urchase one, you really don't need a top-of-the-line, expensive charger. A simple 2 to 6 amp slow-trickle charger will do the job. To charge the battery, connect the red charger cable to the positive battery post and the black charger cable to the negative battery post, then turn on the charger until the battery is charged. If necessary, clean the battery posts and cables before charging. The battery charger will have more complete details for charging the battery. ( Full Answer )
Apart form normal use of the battery, it is possible that the battery is getting old. Most types of rechargeable battery become less able to hold a charge as they age or may i…ndeed have a finite number of times that they can be recharged. This will happen to phone batteries and to car batteries. When this happens you need a new battery and make sure that you dispose of the old battery properly (they contain chemicals that harm the environment). ( Full Answer )
Sure, as long as the voltage of the charging battery is higher than the voltage of the battery to be charged. Be warned though, if batteries are too dissimilar they can be dam…aged. .
Off course they can! I have a small airplane a 'Classic AS 800', that charges the airplanes lithium-cell from the AA-powered remote control. Just as an example..
But actually that charge is not without losses..
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generally speaking, there are several LED lights on the battery charger, when the light is red, it meas the battery is being charged, when the light turn to green or yellow, i…t means the battery is full charged ( Full Answer )
No. Freezing a battery will damage it. have you tested it? The worst environment for any battery is COLD. That is why there are so many problems with car batteries in …the Winter. If the electrolyte in the battery freezes, it will usually expand and crack the battery case or distort the plates in the battery ( Full Answer )
I am assuming you mean with the auto engine running. Yes, that is possible but you are putting a strain on the alternator of the car. An alternator is not designed to charge a… dead battery. It is designed to keep a charged battery fully charged. as long as the ATV battery is the same voltage as the car battery, usually 12 volts, you can charge it, or jump start the atv and let it charge the battery itself. ( Full Answer )
The official charge of a battery is measured by the specific gravity of the electrolyte..
For a good battery and alternator, full charge is noted when the alternator output c…urrent is just enough to carry the load, plus a bit to maintain the battery, and the battery voltage is normal. ( Full Answer )
they are two different types of batterys, the car recharges it's battery as you drive, that battery is a rechargable battery. the torch does not have a rechargable battery but… you can add one to it. ( Full Answer )
In order to understand how a battery charger charges a battery,let's touch on some basics and then crush the question with ananswer. A battery is basically a storage device t…hat stores electricalpotential energy. This commonly takes the form of chemical energy,which the battery converts to electrical energy on demand. Thebattery has a positive terminal and a negative one, and thepotential difference between these terminals will cause electroncurrent to flow when a current path is connected across them.(Consider that the chemical reactions want to occur, butcannot because there is no complete external circuit.) Chemicalreactions in the battery will create the electromotive force(voltage), and the rate at which the chemical reactions take placewill determine the amount of current that the battery can deliver.The battery is a DC (direct current) device as it producesunidirectional current flow. A charger is a device that produces a DC voltage. We usually thinkof this device as being plugged into an AC source (like a walloutlet). The voltage it produces is slightly higher than that ofthe battery it is designed to charge. All we need to do is hook thecharger up to the battery and the battery charges. The negative terminal of the charger is connected to the negativeterminal of the battery. The positive terminals of both devices arelikewise connected together. The battery will try to "force"current to flow through the charger, but the charger, because ofits greater voltage, will force current to flow back through thebattery. In the case of a vehicle battery, that lead-acid batterythat we are probably familiar with, the greater electricalpotential difference of the charger causes "reverse" current in thebattery. The chemical reactions in a battery that cause it to create currentflow are reversed when the battery is charging. The electricalenergy of the charger is converted into chemical energy in thebattery, and this charges the battery to bring it "back to life"and make it useful. By forcing current to flow "backward" in thebattery, the charger can put chemical energy back into the batteryby creating the chemicals that were "used up" when the battery wasdischarging. There are a number of different chemical cells, andthe chemical reactions are different, but the underlying principleis the same when we talk about batteries and chargers. In closing, it is probably a good idea to suggest that there aredifferent chargers for different batteries. Mixing chargers isprobably not a good idea. A charger that has too high a voltageabove that of a battery that needs charging may charge that batterytoo quickly and damage it. An explosion or fire is even possible.In addition, we are seeing many "smart" circuits that monitor therate at which a battery is being charged so that optimal resultsare being obtained. This is particularly true of contemporarydevices like cell phones, laptops and other sophisticatedelectronic equipment. ( Full Answer )
Once the car is started if the alternator is working it will charge the battery, but the battery may not take the charge or may not hold it. Batteries don't last forever. Ther…e should be a sticker on the side of the battery or the top with a letter/number like A/7 which stand for January or 07. That will let you know how old the battery is. Most parts stores will check the battery for free to see if it will hold a charge. If you were to push start a car with a completely dead battery (where the lights have been left on for two days), it won't start. With a boost though, it should start, if the alternator is good. This is because the alternator does not have magnets in it to create the magnetic field (like a generator) it needs to start charging. Normally a battery won't be completely dead, just dead enough to not start the car, but the little bit of power left in the battery is enough to give the alternator the field it needs to start charging. Normally it is always better to boost a battery than push start a car. When boosting a dead battery, the cables should be clamped on for 5 minutes with the boosting vehicle running before trying to start the dead one. This is to allow the dead battery to get partially charged to help with starting the vehicle. Before trying to start the vehicle being boosted, turn off the boosting vehicle (to avoid frying its computer), but leave the cables on, then start the dead one. Once it starts, remove the cables, and let it run (at least 15 minutes in the summer, 30 minutes in the winter) to charge the battery. Double that time if the heater or headlights are on. The reason the alternator was able to start charging was because it drew power from the boosting vehicle battery to create the field it needed even if the battery was completely dead. If this is a persistent problem, it could be the battery, check the terminals to ensure a good connection. If they are good, have the battery load tested, this will tell you if you need a new one. Normally a battery is good for 5 years, less if it has been run dead too many times. ( Full Answer )
Battery cables corroded, alternator is defective, or the battery has a dead cell and needs replacing. Check the voltage at the battery with the engine running. It should be 13….5-16 volts. Any less and the alternator is defective. Also make sure the alternator belt is not loose. All of those things are okay. The new alternator puts out the proper voltage, except when the new battery is hooked up to it. Then the alternator drops 4 volt output and the battery gets drainged. I have tried three new altenators and the battery chcks out. No wiring issues. What is causing this. These kinds of problems is excessive resistance in the high amperage circuit. Loose, corroded or damaged battery cables or ground straps can choke off the normal flow of current in these circuits. And if the current can't get through, the starter won't have the muscle to crank the engine and the battery won't receive the amperage it needs to maintain a full charge. Nasty looking battery terminals that are blooming with corrosion obviously need cleaning. But many times corrosion forms an almost invisible paper-thin barrier between the battery terminals and cables. To the naked eye, the terminals and cables look fine. But high resistance in the connections is preventing the high amp current from getting through. The same goes for battery cables with ends that have been beaten or pried out of shape, or have had the ends replaced. If the clamp isn't making good contact with the battery terminal all the way around as well as its own cable, the cable may have too much resistance and restrict the flow of current. The same goes for ground straps that have loose or corroded end terminals, or make poor contact with the engine or body. Cranking problems can also be caused by undersized replacement battery cables. A wire's ability to pass current depends on the gauge size of the wire. The fatter the wire, the more current it can safely handle. Some cheap replacement battery cables use smaller gauge wire, which may be camouflaged with thicker insulation to make it appear to be the same size as the original cable. But the cable doesn't have the capacity to handle the current. It doesn't take much of an increase in resistance to cause trouble. Let's say a 120 amp alternator operates in a circuit that has a normal resistance of 0.11 ohms. If that resistance were increased to 0.17 ohms because of a bad wiring connection, the alternator's maximum output would be limited to 80 amps. In other words, an increase of only 0.06 ohms (almost nothing!) would reduce the alternator's maximum output by almost a third! Under light load, the drop in charging output might not even be noticeable. But in a high load situation, the alternator wouldn't be able to keep up. If you use an ohmmeter to measure across a heavily corroded battery cable or ground strap connection, or one with only a few strands of wire that make contact with the end clamp or terminal, the connection may read good because all you're measuring is continuity -- not the ability to handle a high amp current load. The connection may pass a small current, but when a heavy load is applied there may not be enough contact to pass the extra current. So how do you find these kinds of problems? You do a voltage drop test. A voltage drop test is the only effective way to find excessive resistance in high amperage circuits. It's a quick and easy test that doesn't require any disassembly and will quickly show you whether or not you've got a good connection or a bad one. To do a voltage drop test, you create a load in the circuit that's being tested. Then you use a digital volt meter (DVM) to measure the voltage drop across the live connection while it is under the load. Voltage always follows the path of least resistance, so if the circuit or connection being tested has too much resistance some of the voltage will flow through the DVM and create a voltage reading. If a connection is good, you should find little or no voltage drop and see less than 0.4 volts for most connections, and ideally less than 0.1 volts. But if you find more than a few tenths of a voltage drop across a connection, it indicates excessive resistance and a need for cleaning or repair. To check the alternator connections on the positive side for excessive resistance: A. Set DVM on 2 volt DC scale. B. Connect the meter positive lead to the alternator output stud (B+ terminal). C. Connect the meter negative lead to the positive (+) battery post. D. With the engine running at 1,800 to 2,000 rpm with all lights and accessories on (except the rear electric defroster), check the voltage drop reading. It should be 0.5 volts or less. If higher, the connections between the alternator output stud and battery need to be cleaned. Also, look for loose connections or undersized cables. To check the alternator connections on the negative side for excessive resistance: A. Set DVM on 2 volt DC scale. B. Connect meter negative lead to alternator case. C. Connect meter positive lead to battery negative (-) post. D. With engine running at 1,800 to 2,000 rpm with all lights and accessories on (except rear defogger), check the voltage drop reading. On the negative side, it should be 0.2 volts or less. If excessive, the connections need cleaning or the negative cable needs to be replaced. Some alternators are mounted in rubber bushings and have a separate ground strap. If so equipped, be sure to check the voltage drop across this strap, too. This car is 16 years old and I would suspect you need to just replace both battery cables. This will more than likely solve your problem. Be sure and check the ground strap too. THANKS! 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The battery might be bad, or your alternator might also be bad. Use a battery load tester or digital voltmeter to see if your alternator is charging the battery? The voltage s…hould be no more than 13.8 volts while the vehicle is running. If it's higher, your voltage regulator is bad, and if it's not much more than the regular voltage of the 12 volt battery itself, the alternator is not doing it's job, and needs to be replaced. Good luck. ( Full Answer )
Most lawnmower batteries will be badly abused by this and it will be quite expensive in gasoline. A lawnmower battery will normally take 8 hrs (or so) to charge. Forcing them …to charge faster, like off your car, will harm it. ( Full Answer )
If it's a regular Duracell or Energizer battery, it's not recommended you charge them. Having said that, you could try using a NiCad charger, but DO NOT leave it unattended. I…f the battery is getting hotter than warm, stop charging it. Your best bet simply would be to buy rechargeable batteries and a charger. SUre, they cost more at first, but it's bice not having to throw batteries away. ( Full Answer )
Yes, it is charged all the time on the car by the alternator. Just hook the battery charger up and charge it. Just make sure to connect the cable correctly. Additional answer… If the battery's flat and you want to charge it without removing it from the car (a common occurrence), just connect it to a charger. ( Full Answer )
Unless it is a rechargeable battery you cannot charge a dry charge battery. If it is rechargeable you need to purchase a charger for that size battery. Automobile batteries ar…e not dry charge. ( Full Answer )
Your best bet is to take it to a competent center that has the ability to charge the battery for you. Most auto parts stores can do this. Tell them you want a slow charge, as …this is the best and safest charge for the battery. Lastly, invest in a good trickle charger... Battery Tender is the best on the market, and can be had for about $25-$35. It wires into the battery by two simple wires (positive lead to the positive battery terminal, negative lead to a good chassis ground). Then, all you have to do is plug the Tender into the pigtail you just installed, and then into an electrical outlet. The light will be red when charging, solid green when fully charged. There is no need to monitor it, as there is an overload protector that prevents the battery from getting overcharged. You just unplug it when you get ready to ride, and the battery is always fully charged. Furthermore, this prolongs the battery life considerably, which will save you money. Ride safe! ( Full Answer )
Yes you can. I run three yellow tops in my show truck ( I need them to power 16 12" pioneer premier subs) and there is a trick you wont find in the website. If it is just a li…ttle low, charge it like normal. If you left your lights on or for any other reason, and the battery is completely dead and you are having trouble getting it to charge, hook it up to the charger and turn it to boost. You want it to send as many amps as possible to the battery. You leave it on boost for 2 to 3 hours, and the battery should be rejuvenated. This info came directly from optima customer service when I killed my 3 batteries. ( Full Answer )
of course, you can do it. Sometimes, when the car battery is dead, we will use the battery booster to connect another car battery to charge it. This process needs a cable. Be …careful, if you plan to do it on your own. My booster is also a charger. it has different settings for slow charge, fast charge, and boost. ( Full Answer )
You must get a couple of so-called jumper cables. The cables havestrong clamps on them and are designed to be clamped to the batteryterminals. Attach the black cable to the ne…gative terminals of themotorcycle and car battery first. Then attach the red or positivecable to the positive terminals of the motorcycle and the carbattery. In case your motorcycle battery is empty, you can nowstart the bike from the car battery. Disconnect the cables inreverse order, beginning with the red cable. The motorcycle batterywill not be charged much by the car battery but the bike can bejump started by using this method. ( Full Answer )
If the battery is a dry cell, then you simply plug it into theproper charger. - If it is a wet cell, as in a car battery, then first you checkthe liquid level in cells and if …necessary raise it with distilledwater. (rain water is a reasonable substitute). Now attach thecharger wires, red to POS. and turn the charger on at a low rate.Any wet cell will last longer if charged at 2-3 amps for about 24hours. ( Fast charge will eventually reduce the output). When thecharge ammeter reduces to '0' the battery is ready. -Do a voltagecheck, it should now read '13'. ( Full Answer )