 |
Search Sci.Electronics.Basics |
|
|
|
|
|
|
 |
|
|
Sci.Electronics.Basics -> NiMH power weight ratio
There are 6 messages in this thread.
You are currently looking at messages 1 to 6.
|
|
|
Just wondering if anyone knows the weight of these batteries?
AAA 900mAH
AA 2500mAH
or will they vary between manufacturers?
I'm trying to work out whether 4 x AAA or 2 x AA has the better power
to weight ratio. The batteries will feed a step-up converter whose
efficiency depends on the input voltage, but I can work that out myself.
|
|
|
|
Author: Phil AllisonDate: 22:47 08-01-07
|
|
<chinsta00@hotmail.com> wrote in message
news:1168313495.696994.67740@q40g2000cwq.googlegroups.com...
** Groper alert
> Just wondering if anyone knows the weight of these batteries?
>
> AAA 900mAH
> AA 2500mAH
>
> or will they vary between manufacturers?
** Of course they vary, by make and by capacity.
> I'm trying to work out whether 4 x AAA or 2 x AA has the better power
> to weight ratio.
** The 2500 mAH AAs win, hands down.
....... Phil
|
|
|
|
|
|
chinsta00@hotmail.com wrote:
> Just wondering if anyone knows the weight of these batteries?
>
> AAA 900mAH
> AA 2500mAH
>
> or will they vary between manufacturers?
>
> I'm trying to work out whether 4 x AAA or 2 x AA has the better power
> to weight ratio. The batteries will feed a step-up converter whose
> efficiency depends on the input voltage, but I can work that out myself.
Oh why not... I've got a postal scale from the days I used to sell
stuff on eBay.
AA, 2300 mAh NiMH Energizer: 1.0 oz
AAA, 900 mAh NiMH Energizer: 0.4 oz
Interestingly, a 2500 mAh NiMH cell also weighs 1.0 oz.
--
Michael Darrett, Senior Computer Resource Specialist
Wireless network setup, computer upgrades and repair.
Sacramento, California
http://www.acomputerexpert.com
|
|
|
|
|
|
Phil Allison wrote:
> <chinsta00@hotmail.com> wrote in message
> news:1168313495.696994.67740@q40g2000cwq.googlegroups.com...
>
> ** Groper alert
>
>
> > Just wondering if anyone knows the weight of these batteries?
> >
> > AAA 900mAH
> > AA 2500mAH
> >
> > or will they vary between manufacturers?
>
>
>
> ** Of course they vary, by make and by capacity.
>
>
> > I'm trying to work out whether 4 x AAA or 2 x AA has the better power
> > to weight ratio.
>
>
> ** The 2500 mAH AAs win, hands down.
>
>
>
>
> ....... Phil
Sure, but not by much...
AA : 2300 (or 2500) mAh/oz
AAA: 2250 mAh/oz
--
Michael Darrett, Senior Computer Resource Specialist
Wireless network setup, computer upgrades and repair.
Sacramento, California
http://www.acomputerexpert.com
|
|
|
|
Author: Phil AllisonDate: 02:19 09-01-07
|
|
|
|
|
|
|
|
mrdarrett@gmail.com wrote:
> Phil Allison wrote:
> >
> > ** The 2500 mAH AAs win, hands down.
> >
> > ....... Phil
>
> Sure, but not by much...
>
> AA : 2300 (or 2500) mAh/oz
> AAA: 2250 mAh/oz
>
In which case I may well go for 4.8V (4 x AAA) into my step-up converter
|
|
|
|
1 |
|
|
|
|
Contact | Electronic Portal
|
|
|
