12v iteams

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bicolour
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12v iteams

Post by bicolour »

just wondering what others use there 12v for?

i currently only use for lights at night

it is connected to a inverter but dont seem to use it just there realy
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billy739
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Re: 12v iteams

Post by billy739 »

when in spain i run 2 computer fans at night , silent and not too powerfull , just enough to keep the air moving!

stereo and amp!- bug jam usually as it can interfere with the locals

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Re: 12v iteams

Post by dansimpson »

billy739 wrote:when in spain i run 2 computer fans at night , silent and not too powerfull , just enough to keep the air moving!

stereo and amp!- bug jam usually as it can interfere with the locals

Yes I seem to remember a bit of music n flashy lights coming from a van at Dubaid this year, thought you was having a rave in there, we were gutted not to have invites :lol:
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bicolour
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Re: 12v iteams

Post by bicolour »

we looking to use the van though winter

how long would a 300w heater run of a 75ah leisure batt?
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billy739
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Re: 12v iteams

Post by billy739 »

Yes I seem to remember a bit of music n flashy lights coming from a van at Dubaid this year, thought you was having a rave in there, we were gutted not to have invites

no invites needed! its always an open party!

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R0B
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Re: 12v iteams

Post by R0B »

You would be better investing in a Eberspacher.Propex.or a Webasto heater.If you intend on doing some winter camping.

we looking to use the van though winter
how long would a 300w heater run of a 75ah leisure batt?
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kevtherev
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Re: 12v iteams

Post by kevtherev »

bicolour wrote:we looking to use the van though winter

how long would a 300w heater run of a 75ah leisure batt?

you need 1.6 Kw to heat a van in 4 deg C... and maintain a comfortable temp.

Other twelve volt stuff... I use
Fresh water pump
Propex heater
TV.
DVD player.
surround sound.
Media player.
phone charger.
Lap top.
Hair straighteners.
50 Watt head unit and four speakers

.
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thebobster
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Re: 12v iteams

Post by thebobster »

bicolour wrote:we looking to use the van though winter

how long would a 300w heater run of a 75ah leisure batt?

75 ampere / hours means 1 amp for 75 hours or 75 amps for one hour and all values in between (basically, but not perfectly)

a 300watt heater would use 300/12 = 25amps. (1 watt = 1amp of current at a pressure of 1volt so 300 watts = 25amps at 12volts)

a fully charged, perfect condition 75a/h battery would therefore last a maximum of 3 hours powering your heater.

Your best bet would be to fit a Propex gas warm air heater or an Eberspacher petrol / diesel heater - depending on what fuel you use. They work all night long and get the van toastie warm in no time.

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R0B
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Re: 12v iteams

Post by R0B »

Take em back kev.I've seen your hair.And they dont seem to be doing the job very well. :)


Hair straighteners.
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kevtherev
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Re: 12v iteams

Post by kevtherev »

R0B wrote:Take em back kev.I've seen your hair.And they dont seem to be doing the job very well. :)


Hair straighteners.

I'll tell Louise you said that. :D
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kevtherev
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Re: 12v iteams

Post by kevtherev »

thebobster wrote:
bicolour wrote:we looking to use the van though winter

how long would a 300w heater run of a 75ah leisure batt?

75 ampere / hours means 1 amp for 75 hours or 75 amps for one hour and all values in between (basically, but not perfectly)

a 300watt heater would use 300/12 = 25amps. (1 watt = 1amp of current at a pressure of 1volt so 300 watts = 25amps at 12volts)

a fully charged, perfect condition 75a/h battery would therefore last a maximum of 3 hours powering your heater.

In realistic terms. For starters you don't want to drain a battery to it's completely flat, empty, dead state as it will significantly reduce the life of the battery. A good rule of thumb (battery type depending) is that you should only drain a battery down to 40% of it's original capacity, or in other words you've only got 60% of the battery to use.

So for example 100 Ah, 5 Amp load example: By your calculation you had 20 hours of time when drawing 5 amps, but in fact you only have 60% of that time, so 20 hours x 60% = 12 hours
If you factor in Peukert's Equation, the more current you draw the time you have reduces even further.
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The Bishop
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Re: 12v iteams

Post by The Bishop »

Latest addition to my van is a Three Mi-Fi. So now the kids can access the internet while we are on the move and the van becomes a mobile wi fi hot spot :-)

Could even use it to steam live TV to lap top etc :-)

Before long I think all cars will have it as standard. You can then use an Ipad or similar for all your entertainment, sat nav, telephone calls, e-mail, GPS tracking etc. I know some custom built interiors are already incorporating it. I haven't quite got to that stage yet.
1986 1.9 Petrol/LPG with Devon pop up.

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