Battery life is so short and it takes 10 hours to fully charge it
The battery logo is so crazy. like now, its half then a few seconds later its full then goes to the red part. ive installed a free battery monitoring problem and the battery percentages are crazy! i think there is something wrong with iphone 3g OS 3.0
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try letting the battery completely die and recharge it. Do this 2 or 3 times. Sometimes "topping up" a partially charged battery puts a memory into the battery and it wont allow you to do full charge.. I let my Nokia get to its last legs before replacing the battery with a spare and then fully charge the other one. Both batteries are now at least 6 years old.. Yes , its an old phone...
Have you fully charged the battery? if it is a new camera or battery,it needs at least 12 hrs of charge,to maintain good charge, if only a short time of charge was given from new the life of the battery will be greatly re-juiced,try a new battery with a full charge, if this fails your camera is probably faulty, take it back to get a replacement.
Eventually your battery will have a short/no life indeed. Though this happens to all laptops. Using your laptop while it is charging isn't going to damage anything. It just means that the battery will take longer to charge because you're using the laptop. To get the most life out of the battery, fully charge it and then use it until it is empty. It's also a good idea to remove the battery when the laptop is connected to the mains supply. All you're trying to do is extend the life of the battery. The day will come when it holds a short/no charge.
Not really, the older NiCad batteries get a memory effect if you keep charging from a half charged state, but modern Lithium batteries do not suffer from this problem.
If thelaptop battery is more than 3 - 4 years old then the battery could be worn out.These rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.
Hi. How many amp/hours are your batteries?
Who tested your batteries, and how did they test them.
I have had batteries tested by an auto electrical technician, who said the batteries were OK. I knew at the time that the batteries were faulty.
What he did was do a short high current test, that he would normally do on a car battery.
To test batteries in a scooter you have to do a constant current test on fully charged batteries, and monitor the battery voltage. When the battery voltage drops to 10.5 volts across the 12 volt battery, that is considered a flat battery. Take the time elapsed for the test, and you can roughly work out the amp/hour rating of your batteries.
The amp/hour rating of a battery is worked out on a 10 or 20 discharge. A 40 amp/hour battery can supply 2 amps/ hour for 20 hours.
If you take 20 amps per hour, you will not get 2 hours of use. You will probably only get 1.5 to 1.75 hours of use. The more current ( amps ) you take out of a battery, the less amp/hours it will supply.
The best way to test your batteries is a constant current test, but they take a few hours, or try new batteries.
Also how long do you charge your batteries for. Most chargers need to be on at least over night to fully charge your batteries.
Some chargers have a green LED that comes on when the batteries are nearly full. This green LED is a guide only, and most batteries still need a few more hours to do a full charge.
Good luck. Neil.
How long does your battery usually last? If it lasts 2 hours or more, that's normal for a notebook computer. The standby mode and turning off of hard drives is what notebooks are designed to do to give you more battery life. If you have to have it on and available all the time without going into standy mode, you'll need to get used to charging it every couple of hours. If you want to get more battery life, try the following options: 1) have the display turned off when not in use (this setting can be changed where you set up your screensaver) 2) turn off the wireless function (if available) when not in use 3) have the computer go to standby mode after 10 or 15 minutes of inactivity. 4) lower the brightness of your display
All of the above assumes that you're getting a decent charge and can use the notebook unplugged for 2 hours or more. Naturally, over time, notebook batteries wear down and don't hold a charge as well as they once did. If your notebook is a few years old and you're only getting an hour or so on a full battery, then it is probably time to invest in a new battery. If your notebook is new and you are getting this short battery life, contact Dell for a replacement battery as yours may be defective.
One last thing about notebook batteries. They are designed to be charged up and run down. If you leave your computer plugged in to a/c power all the time while you are using your computer, this greatly speeds up the wearing down of the battery. Whenever possible, you should fully charge your battery and then run the battery down to 10% or less before plugging it back in. This ensures that you get the most battery life on a consistent basis.
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