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zippy656
20-07-2009, 19:38
ok, ive a 110ah leasure battery..

want to run a HiFI for the Devizes Carnaval..
so kids got some music to dance to.


with a 150w inverter,

how long will my battry last ..

any ideas how i work it out?


Zippy
Adz
20-07-2009, 19:41
ok :augie
I'll be the 1 to say it :doh

Try it & you'll have your answer when you hear no sound or it wont start :D
dino
20-07-2009, 19:42
If you battery is 110ah=110 AMPS IN HOUR
zippy656
20-07-2009, 19:43
If you battery is 110ah=110 AMPS IN HOUR


i know that.. but using a 150w inverter??

thought they pulled more?!?
tezzer
20-07-2009, 19:52
approx 9 hours, depends how good your battery is.:thumb2
zippy656
20-07-2009, 20:02
new..

they took the old one out at the last service and for got to put it back is, so sent me some money to get myself a new one
dino
20-07-2009, 20:02
i know that.. but using a 150w inverter??

thought they pulled more?!?

Whats the max wattage of radio?
zippy656
20-07-2009, 20:06
Whats the max wattage of radio?

its mp3 player or cd player..

with actice speekers...
tezzer
20-07-2009, 20:07
Whats the max wattage of radio?

50 - 200 in my book, i suppose it depends if its a ghetto blaster or not.:lol:thumb2
ocelot
21-07-2009, 12:33
The conversion of Watts to Amps is governed by the equation Amps = Watts/Volts

For example 12 watts/12 volts = 1 amp

150 watts/12 volts = 12.5 amps,

if you have a 110Ah battery, (bear in mind that leisure batteries are designed for slow discharge,) the on-load voltage will remain constant until the battery approaches it's discharge capacity.

the battery will be 80% discharged after approximately 6.8 hours, around which the voltage will drop sgnificantly enough to stop the invertor from working.

The link for those who want to
http://www.gizmology.net/batteries.html

Regards

Dave
zippy656
21-07-2009, 12:39
Thanks Dave. been trying it, with the stuff ive got its just not LOUD enough..

so got to re think....
ocelot
21-07-2009, 12:59
how about a generator ? eblag have plenty....... a little 2 stroke would do the job, about 500w peak.

Then a combined mixer - amplifier unit, pair of cheapo speakers, or hire them in from a local pa company?

Easy solution.
zippy656
21-07-2009, 13:18
how about a generator ? eblag have plenty....... a little 2 stroke would do the job, about 500w peak.

Then a combined mixer - amplifier unit, pair of cheapo speakers, or hire them in from a local pa company?

Easy solution.

I think thats the way the guides will have to go.
dino
21-07-2009, 13:49
I think thats the way the guides will have to go.

You want to borrow mine ?? Generator that is 3.5kv