help / advice

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

I'll be the 1 to say it

Try it & you'll have your answer when you hear no sound or it wont start

dino · 20-07-2009, 19:42

If you battery is 110ah=110 AMPS IN HOUR

zippy656 · 20-07-2009, 19:43

Quote:

Originally Posted by dino

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.

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

Quote:

Originally Posted by zippy656

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

thought they pulled more?!?

Whats the max wattage of radio?

zippy656 · 20-07-2009, 20:06

Quote:

Originally Posted by dino

Whats the max wattage of radio?

its mp3 player or cd player..

with actice speekers...

tezzer · 20-07-2009, 20:07

Quote:

Originally Posted by dino

Whats the max wattage of radio?

50 - 200 in my book, i suppose it depends if its a ghetto blaster or not.

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

20-07-2009, 19:38	#1
zippy656 Senior Member Join Date: Aug 2008 Location: Devizes Wiltshire Vehicle: Nissan Note Ntec 1.5 Posts: 14,138	help / advice 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

20-07-2009, 19:41	#2
Adz Senior Member Join Date: May 2009 Location: Roaming Nomad Vehicle: 1995 SWB Terrano Posts: 5,370	ok I'll be the 1 to say it Try it & you'll have your answer when you hear no sound or it wont start

20-07-2009, 19:42	#3
dino Senior Member Join Date: Mar 2007 Location: Wiltshire Vehicle: Ford maverick SWB 2.4 Posts: 345	If you battery is 110ah=110 AMPS IN HOUR

20-07-2009, 19:52	#5
tezzer Senior Member Join Date: Nov 2008 Location: basildon essex Vehicle: transit camper van 1987 Posts: 2,829	approx 9 hours, depends how good your battery is.

20-07-2009, 20:02	#6
zippy656 Senior Member Join Date: Aug 2008 Location: Devizes Wiltshire Vehicle: Nissan Note Ntec 1.5 Posts: 14,138	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

21-07-2009, 12:33	#10
ocelot Senior Member Join Date: Jun 2009 Location: merseyside Vehicle: Nissan Terrano 2.7 Posts: 242	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