how long do energizer and duracell batteries last??
95406
energizers keep going and going and going............\nduracells last as long as they do depending on what u use them for
936680
1.)   The battery contains 4 amp hours of electrons.  This means it can be drained at the rate of 1 amp per hour for 4 hours.\n2.)   So, if you are only draining it at the rate of 1//4 amp per hour it will last 4 times as long or 16 hours.\n3.)   Just think of a battery as a bucket full of water e.i. The slower you pour it out the long it lasts.
783316
I am not sure if there are safer or just more reliable.  They have no brushes compared to a DC generator.  They use diodes instead.
641122
If your notebook has been used on the mains most of the time like citaloraming says fully discharge the battery then charge it overnight Do this for 5 nights on the trot This will now give you the max you can get out of that battery\nHow long a battery will last has no answer as it depends on how hard you are working the machine and what processor is fitted the Standard P4 processors run so hot that 45 to 60 Min's is the best you can hope for Don't forget that a lot of the budget laptops have only 6 cell batteries fitted and again 45 to 60 Min's is around the average Once again do a google search on the model of your laptop and look for the spec on a new model If the battery is more than 2 years old and you are getting 45 mins count your blessing
1038688
depends on how good of a make is it and the ratio of the player is and were it originates from and most of all what kind of batteries does it run best off.there for if its worth as much as it is u should receive as much as its worth.
145918
A little dated, but our used laptop blog has lots of good battery info ...\n\nbest deals on laptop batteries\n\nhttp://www.cheap-refurbished-used-laptops.com/2004/12/best-deals-on-laptop-batteries.html
6795
check "turn of hard drive" timeout under power management (Right-click destop, properties, screensaver, Power). If it's like 1-2 minutes, amke it 15. Also check other settings, you might find other things that tip the balance from battery life to performance.
646140
yeah my batter is completely shot.  I get about 3 minutes of play time and then i have to charge it again.  I just bought a new one for 9.99 with shipping, they're usually way more.
218884
One of the latest(?) engineering breakthroughs is the nanotechnology Lithium Titinate battery material that promises to revolutionize portable power.  It is expect that golf carts using this material will recharge in about three minutes and last about three times longer and operate at much lower temperatures without to much lost performance.  Also the nano material will avoid explosions that non-nano material risks in large batteries.  The batteries will also power vehicles and hand tools and last perhaps ten years.
169142
The various companies that make external, long lasting batteries are:  Electrovaya PowerPad battery,  PowerPlant and Valence.
1116808
I would call dell tech support up and let them know the battery is a dud.  To keep the battery lasting longer fully charge it then let it drain 2 or 3 times right off the bat then fully change it and drain it once a week do not leave the power cord in the computer when you don't need it.  If you do this constently it will kill the battery.
241110
24 hours\n\nClick link below for more info:
985659
Its better u plugged ur battery out...!\nEvery battery has LifeTimer..! when u left it plugged in, it will decrease its LifeCycle. \nTo ensure lasting ur battery, from time to time, try to charge it nearly 8hrs without turning on ur LapTop.!\nenjoy it ;)
676452
If you use the same bulb for all these different voltages, it will either burn out really fast on 12V or not light at all on 1.5V, or do both. You didn't say what the 12V battery is; suppose it's a car storage battery, then it'll shine brightest and last longest if you use the right bulb, which would be 12V (to not burn out) and something like a brake-light bulb (3 amps or so, which will last at least 20 hours on one charge and put out 36 watts). You can't beat that combination (brightness times duration) with any other of the batteries you listed.
175018
24 to 36 hours depends on the amount of use
845830
I have 6 of these exact cameras.  I use rechargeables in all of them (this will save you big bucks in the long run) but when I hook up a solar panel it does not seem to help (if anything I would say it drains it faster, and yes I have the polarity correct)  I charge the batteries at home and swap them up when I can.  There are a few things that might be the problem.  One is old batteries, after a while the rechargeables just don't hold a charge and you need to replace them.  Two if you have the camera set to video it sucks alot of power from the battery, so try switching to still photos.  Three if you are getting alot of night time shots the flash will drain the battery, try to reduce the time between photos.  Last but not least I believe that some cameras are just not as good as others, I have a few that will last for a month and take 500 pictures and I have others that will die in a few days with less than 50 pictures.  I am not sure if moisture in the area affects the life or not but my camera in the swampy area always dies first.  Also you will get less battery life in the winter time when it is cold. I know I didn't really answer your question but at least you have some thoughts based on experience.
676827
yes, use nicad, they last longer between charges