More (improbable?) battery stuff

[Glenn Gundlach]

The battery lawn mower is interesting -- much like this battery powered
pool cleaner.
http://www.watertechcorp.com/html/Products/PoolBuster/
They claim 1 hour of run time on an 8.4 Volt battery while pumping
40-50 gallons a minute. I don't know how much power it takes to move
that much water but I have large doubts as to a battery pump moving
more than 2400 gallons (40*60) on a single charge. Are they honest or
just BS-ing?
GG

 

[James Meyer]

The battery lawn mower is interesting -- much like this battery powered
pool cleaner.
http://www.watertechcorp.com/html/Products/PoolBuster/
They claim 1 hour of run time on an 8.4 Volt battery while pumping
40-50 gallons a minute. I don't know how much power it takes to move
that much water but I have large doubts as to a battery pump moving
more than 2400 gallons (40*60) on a single charge. Are they honest or
just BS-ing?
GG

Moving water isn't all that energy intensive as long as you don't have
to lift it higher than its starting point.

Jim

 

[Tim Shoppa]

1 hour of run time on an 8.4

Volt battery while pumping 40-50 gallons a minute.

Pumping water downhill is easy . I'm very dubious about pushing
that much water through any sort of lift and filter that fast, too.

Looks to me like a water version of a cordless dustbuster.

Tim.

 

[Luhan Monat]

The battery lawn mower is interesting -- much like this battery powered
pool cleaner.
http://www.watertechcorp.com/html/Products/PoolBuster/
They claim 1 hour of run time on an 8.4 Volt battery while pumping
40-50 gallons a minute. I don't know how much power it takes to move
that much water but I have large doubts as to a battery pump moving
more than 2400 gallons (40*60) on a single charge. Are they honest or
just BS-ing?
GG

Interesting, this is a hand held unit. How long can you hold your
breath while cleaning the bottom of the pool?

 

[Ian Stirling]

Moving water isn't all that energy intensive as long as you don't have
to lift it higher than its starting point.

And as long as you use the right design of pump.
Say a 1.2Ah battery, 8.4V is about 10Wh, or 36KJ.
2400 gallons = about 10000l = 10000Kg.
Or 3.6m.
With an efficient piston pump, quite possibly.