Re: Battery Powered Lawn Mowers - All Junk - Why?

On Tue, 26 Apr 2005 12:02:45 -0400, Spehro Pefhany
<speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

>On Tue, 26 Apr 2005 08:44:28 -0700, the renowned John Larkin
><jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
[snip]
>>
>>What will, say, 5 hp-hour worth of batteries weigh? Or cost?
>>
>>John
>
>I figure about $2K and 30kg, assuming the density is the same as NiMH
>AA cells. More cost and less weight for Li cells.
>
>But maybe it could be 1/5 or 1/10 of that, I'm not sure about your
>assumption. A 1/2 HP DC motor for 2 hours should be fine- and maybe
>then it's only putting out full power 1/2 the time. At $200-$400 and
>3-6kg it's starting to look interesting as a boutique item.
>
>
>Best regards,
>Spehro Pefhany

Naaah! Why waste your time. Around here you can get a free electric
(with a cord) mower by turning in your gasoline-powered version to the
Salt River Project (one of the major power companies here in Phoenix).

Me, I don't own either, my yard/garden maintenance man uses all
gasoline-powered tools ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
.

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