Rechargeable Battery It’s Got the Power
battery March 23rd, 2009
The invention of batteries is perhaps one of the most useful innovations of the modern times. In the contemporary world which is brimming with all sorts of gadgetry, the importance of batteries is becoming clearer to us.
We all hate alkaline batteries for they are so unreliable. It dies within a short span of time and then add on to the junk of our houses. The better option is to buy rechargeable batteries that are indeed better and useful in comparison to the former. The way by which these rechargeable batteries function is equivalent to the way your regular batteries function. The only difference is that when the need of replacement arises, all you need to do is to recharge these batteries and use it again.
Rechargeable batteries can also be named as cheap batteries as they avoid the hassle of walking to the high street shop to buy a new one every time. The electronic gadgets are numerous and forever increasing. Thereby enhancing the need for these rechargeable batteries. From charging your clocks or stereo to lights or toys, a fairly large chunk of our household works on these batteries. For instance, if you constantly need to operate your laptop while travelling, then you can stick on to the rechargeable laptop battery rather than opting for the normal batteries, for they are indeed helpful to keep your gadget go on and on.
These cheap batteries have made our lives easier and convenient. Nearly all the top manufacturing brands are into producing these types of batteries. So forget about your old alkaline batteries. See the new mantra of power which is emerging in the form of cheap rechargeable batteries.
Fletcher Mak
http://www.articlesbase.com/electronics-articles/rechargeable-battery-its-got-the-power-131268.html
March 23rd, 2009 at 6:50 am
Approximately how long would a 6 volt 1.2 Ah Lead Acid Rechargeable Battery power a 55w or a 10w halogen lamp?
Thanks very much for any help you can give.
March 23rd, 2009 at 11:52 am
i don't even think i would!
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March 23rd, 2009 at 11:54 am
simple ohms law question this one but still there are people who dont know the answer
i say shame on them !!
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March 23rd, 2009 at 11:56 am
1.2 Ah at 6V means that the energy stored is 7.2 watt-hours.
So a 55W lamp about 7.2/55 hours or about 8 minutes. A 10W lamp about 7.2/10 hr or about 43 mins.
However, this is only a theoretical energy calculation; such a small battery may not even provide the necessary current (over 9A for a 55W lamp!) to illuminate the lamp at all.
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March 23rd, 2009 at 11:58 am
all maths…
55W / 6V = 9.1666A
Battery is 1.2 Ah or 1.2 amps for 1 hour.
1.2A / 9.1666A = 0.1309 of an hour
0.1309H x 60 = 7.854 minutes
The 10W would be about 43 minutes
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March 23rd, 2009 at 12:00 pm
Round the 55W up to 60W to make it easier. If it is also 6V then it will take approx 10A. (Power = Volts x Amps, so 60W = 6V x 10A.)
Ah is Amp-hours, i.e. Amps x hours, so
1.2Ah = 10A x 0.12 hours
so 0.12 hours = 7.2 minutes.
You shouldn't discharge lead-acid batteries too low, even "leisure batteries" designed for such things shouldn't go below 50% of full charge.
1.2Ah sound very low for a lead-acid battery. Are you sure?
You can do the 10W halogen calculation yourself now…
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March 23rd, 2009 at 12:02 pm
OK well there's a big difference between 55w and 10w. but I'm guessing your looking for a 3hr duration for emergency evacuation. so none of them are any good the 10w and the 55w of a 6volt supply would die within the hour. Though the 10w might not give you the lux levels you need.
Sorry though mate, if I'm wrong as Ive just come in from the pub.
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