leisure battery power

[darren_374316109]

HI I have just got a 1000 watt inverter, and connected it to a 110 amp leisure battery.how long will it take to discharge the battery using a 60 watt tv (5A).

 

[Willy_5041515]

Maybe I have misunderstood, but why would you want to use an invertor to run your TV. The TV must have a 12 volt DC input since you say it consumes 5 amps/60 watts and voltage = power divided by current = 60/5 = 12 volts. If you use an invertor, this will convert 12 volts DC to 230 volts AC which will also operate your TV OK, but why convert 12 volts to 230 volts when the TV will simply convert this back down to 12 volts (probably by means of its own external, or possibly internal, AC to DC power supply)? This will only waste at least 25% of your available power.

In summary, if you can run your TV directly from the battery using it's 12 volt DC input, it will theoretically run for 110 divided by 5 = 22 hours. In practice, it will be a lot less than this because battery power is specified assuming ideal loads. Also, you will almost certainly also be using the battery for pumps, lighting, etc.

If you run through an invertor, I would guess a loss of approximately 25%, i.e. 16.5 hours.

I hope this helps!

 

[darren_374316109]

Maybe I have misunderstood, but why would you want to use an invertor to run your TV. The TV must have a 12 volt DC input since you say it consumes 5 amps/60 watts and voltage = power divided by current = 60/5 = 12 volts. If you use an invertor, this will convert 12 volts DC to 230 volts AC which will also operate your TV OK, but why convert 12 volts to 230 volts when the TV will simply convert this back down to 12 volts (probably by means of its own external, or possibly internal, AC to DC power supply)? This will only waste at least 25% of your available power.

In summary, if you can run your TV directly from the battery using it's 12 volt DC input, it will theoretically run for 110 divided by 5 = 22 hours. In practice, it will be a lot less than this because battery power is specified assuming ideal loads. Also, you will almost certainly also be using the battery for pumps, lighting, etc.

If you run through an invertor, I would guess a loss of approximately 25%, i.e. 16.5 hours.

I hope this helps!

thanks for the advice willy.My tv does have a transformer that plugs in to mains to convert it to 12 volt, i thought the only way to run it would be through an inverter hope im right never used one before

 

[darren_374316109]

thanks for the advice wiily. My tv does have a transformer that plugs in to mains to convert it back to 12v .i thought the only way to run it with out hook up would be through an inverter, hope im right