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Today you ipod almost runs out of battery the bar is red already and when I charged it it only takes 1 hour and a half to get fully charged. shouldn't it be 4 hours to charge fully?
Wiki User
∙ 14y ago
No. Chargers charge batteries faster than they last. My mac for instance, takes 3 hours to charge and has a 7 hour battery.
Wiki User
∙ 14y ago
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How do you run car to charge up new battery?
New batteries almost always come fully charged. If it was not then charge it with a battery charger and do not use your vehicle alternator to charge a dead battery. You may do harm to the alternator which is not built to charge a dead battery but is instead built to keep a good battery fully charged.
How does a car get electrically charged?
a charger for the battery is provided along with the car it almost same as charging your mobile phone
IF capacitor that has been connected across a battery for comparatively long time becomes?
If the capacitor isn't punctured or failed, then it becomes charged to the voltage of the battery almost immediately after it's connected to it, and stays that way.
Does charging your cellphone every night fry its battery?
No, the charger should not cause harm; but it will waste mains power.Rechargeable batteries should be allowed to be almost fully discharged before recharging. Recharging a partly charged battery will shorten its life.
How do you make your kindle fire come on when the green light comes on and then goes off?
are you sure you have it fully charged? (also i heard that if you buy a new electronic and you unplug it before it is fully charged it will have less full battery usage every charge, so if you unpluged it just after it started charging the first time you might have almost no battery power at full charge)
Which current does a street lamp use ac or dc?
Unless the street lamp is a self-contained, battery-operated, solar-charged model, it almost certainly would be an ordinary AC-powered light.
Does leaving a battery in a charger after fullt charged damage the battery?
Yes and no. Yes it will damage the life and rechargeability of the battery if its a normal streight through charger. No- if your battery charger has a trinkle charge on it. Trinkle charging is when a battery is fully charged and the charger recognizes this and stops charging and allows the battery to loose some charge and then repeat the process, instead of continuosly shoving power into the battery. Some chargers and most new chargers have this feature built in. And some will say this on the charger itself. But the majority of chargers do not have this feature and you should take the battery off and either let it sit or use the battery until its almost or better yet all the way dead. That is the best way to keep your battery memory fresh and make it last. BIGJ
What to do when a there is a battery in a psp and the charge light is flashing?
It means it is almost outa' battery.
What would cause 1999 Mazda 626 not have any power with fully charged battery?
The battery has nothing to do with the power of the engine. Now if you are referring to starting power then some batteries can show a full charge and still not be able to start the engine. Remove the battery and have it tested for free at almost any auto parts store that sells batteries or Walmart.
What is the dry battery?
A dry-charged battery is a conventional non-sealed wet-cell battery (this is almost always a rechargeable type). Normally, this battery type is wet-charged, meaning that the battery is filled with electrolyte at the factory, charged, and then shipped with the electrolyte in the battery. However, since the battery is not sealed, the electrolyte (either a strong acid or alkali) can spill out, which can be both a health and environmental hazard. The battery will also self-discharge at its normal rate during shipment and storage. Dry-charging is a way to minimize these problems. Like a wet-charged battery, a dry-charged battery is filled with electrolyte at the factory and charged. However, the electrolyte is then removed from the battery. The battery is then washed out, dried out, and sealed. The battery may also be filled with an inert gas to minimize reaction of any remaining electrolyte, as in the U.S. military BB-451/U silver-zinc battery, which used a very strong alkaline electrolyte (40% potassium hydroxide). The sealed battery is shipped and stored separately from the electrolyte. Because the electrolyte is in a sealed container, chances of spillage are reduced. The sealed battery will also self-discharge at a lower rate than usual, so it should still have useful charge up to 18 months after manufacture if stored below +90 degrees Fahrenheit (+32 degrees Celsius). When the battery is needed, the electrolyte is CAREFULLY added back to the battery (eye protection and gloves must be worn and other precautions taken). The battery must be allowed to sit for some time afterwards so the electrolyte can soak around and through the battery's internal structures. The electrolyte temperature will rise and its specific gravity (SG) will drop during the soak. The manufacturer may recommend that the SG be measured after the soak time, and the measured value will have to be corrected for any difference between the actual electrolyte temperature and the temperature at which the reference SG was measured. After the soak time, a (very rare) nonrechargeable dry-charged battery is ready for use, and some rechargeable dry-charged batteries may also be ready for use (like the BB-451/U). However, dry-charged lead-acid batteries will almost always need a low top-off or trickle charge. Rolls Batteries prescribes 5% of the 8-hour or 20-hour charge rate, to be reduced if the electrolyte becomes too warm or too much gas bubbles out of it. If the electrolyte in a rechargeable battery becomes too warm before charging, the battery will first have to be cooled down or allowed to cool naturally.
What partial charged dos oxygen have?
Almost always negative.
How many volts are in a battery?
The voltage (Electro Motive Force or EMF) of a battery depends on the type of cell used and the number of cells in series. For example, the lead/acid battery in a car has six cells in series, and each one has a EMF of 2.2 volts when fully charged but not being charged, making 13.2 volts. When being charged, the voltage on each cell is raised by 0.1 volts, making the voltage now 13.8 volts. When loaded, the battery output voltage will droop to some lower voltage due to the load current flowing through it's internal resistance. The amount of droop depends on the amount of load, the internal resistance, and the condition of the battery. Various other battery systems have other cell voltages etc. Almost all cell types have EMFs in the 0.5 to 5 volt ranges.
