volts..........Ah

donn Wolfsburg Elder

3,515 posts · joined Nov 2005 · 24 Dec 2010, 4:20 pm

#818263

Voltage: 7.4v
Capacity: 1500mAh.

Voltage: 3.7v
Capacity: 1700mAh

Two different camera baterys, can someone explain why more volts = less Ah.........i would assume that all batteries work the same ie. car batery.... could it be the size of the cell used to make the unit?

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waveman1500 Also rides a Honda

1,346 posts · joined Dec 2009 · 24 Dec 2010, 5:17 pm

#818267

Because producing more volts requires more cells, each of which must hence be smaller. It depends on the specs of the individual battery though, it would probably be possible to specify the higher voltage battery with even more Ah than the lower voltage one if the manufacturer wanted to. Also, all batteries do not really work the same, the basic concept is the same but the materials and construction vary wildly.

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11,654 posts · joined Aug 2002 · 25 Dec 2010, 12:34 am

#818298

donn wrote:Voltage: 7.4v
Capacity: 1500mAh.

Voltage: 3.7v
Capacity: 1700mAh

Two different camera baterys, can someone explain why more volts = less Ah.........i would assume that all batteries work the same ie. car batery.... could it be the size of the cell used to make the unit?

more cells = more voltage
larger cells or different materials = more mAh..

rechargeable AA batteries [really a cell] can be bought in various sizes of mAh... 2450 2500 2650 2800 and ones in solar garden lights are 800 mAh.. all at 1.25 Volts DC

naturally the more charge capacity the longer they last...

a cheap AA battery won't last long at all...
Alkaline are much better..
then there are Energiser Lithium etc which last a along time but can cost up to $7 each...

I bought some rechargeable AA batteries and a charger when I bought My camera... now I use rechargeables in everything... lol

AA & AAA ... so leaving a torch etc on doesn't cost Me money..

LEE

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