Luminous Landscape Forum

Equipment & Techniques => Digital Cameras & Shooting Techniques => Topic started by: dwdallam on July 15, 2009, 07:04:52 pm

Title: Battery Question for Technofiles
Post by: dwdallam on July 15, 2009, 07:04:52 pm

Is there any benefit to using multiple batteries over one batteries given equal power ratings?

Ex: 3 AAA at 700mA vs 1 AA at 2100mA

Thanks

Title: Battery Question for Technofiles
Post by: dalethorn on July 16, 2009, 07:38:05 am

Quote from: dwdallam

Is there any benefit to using multiple batteries over one batteries given equal power ratings?
Ex: 3 AAA at 700mA vs 1 AA at 2100mA
Thanks

If it were 3 'AA's yes, but with 'AAA's having so much less capacity than 'AA's, you negate much of your gain, and it's not a good deal for the money. Rechargeable would help some....

Title: Battery Question for Technofiles
Post by: sergio on July 16, 2009, 01:21:17 pm

Each AAA battery is 1.2 volts (rechargeable, otherwise 1.5) and if they are connected in series as they usually are in electronics that will add up to 3.6v vs just 1.2v of your lonely AA battery, even if their amp ratings are the same. This little equation might make the picture clearer:

amps x volts = watts

And also bear in mind that if you have multiple batteries in a bank, all will be downgraded to the state of the weakest one. It is better to have fewer batteries of higher capacity in a bank.

Title: Battery Question for Technofiles
Post by: dwdallam on July 16, 2009, 07:58:33 pm

Quote from: sergio

Each AAA battery is 1.2 volts (rechargeable, otherwise 1.5) and if they are connected in series as they usually are in electronics that will add up to 3.6v vs just 1.2v of your lonely AA battery, even if their amp ratings are the same. This little equation might make the picture clearer:

amps x volts = watts

And also bear in mind that if you have multiple batteries in a bank, all will be downgraded to the state of the weakest one. It is better to have fewer batteries of higher capacity in a bank.

That's it then. The 3 AAA's are in a LED light and the LED require 3Vs to fire.

And also watts/amps = volts -- lol

Thanks.

Title: Battery Question for Technofiles
Post by: Robert Roaldi on July 17, 2009, 12:56:05 pm

This is not in reply to the original question but simply wanted to give a useful battery link: Battery university. (http://www.batteryuniversity.com/index.htm)

Title: Battery Question for Technofiles
Post by: dwdallam on July 18, 2009, 02:31:48 am

Quote from: Robert Roaldi

This is not in reply to the original question but simply wanted to give a useful battery link: Battery university. (http://www.batteryuniversity.com/index.htm)

Thanks, I just bookmarked it.