12v Cig Lighter socket- how much can it handle and best way?

[WTR]

+ 1, Fitter.

[tryg]

i have an outlet in the boot, but I ran a separate 16ga cable and 15amp fuse from the battery. It means a big portable fridge can cycle without popping fuses from sources in the car or damage the orderly flow of electrons to sensitive systems in the vehicle!!!

[Fitter]

tryg, i wouldnt go from the battery, come from the ignition barrel... safer if u keep it in the car.

[tryg]

I have it relayed from the ignition, no key, no power... all good

[Blakey]

G'day Blake - 15 amp fuse rating is from the owner manual.

ah ok i though you said to change it from 10 to 15 not that it was already 15.

[Blakey]

i have an outlet in the boot, but I ran a separate 16ga cable and 15amp fuse from the battery. It means a big portable fridge can cycle without popping fuses from sources in the car or damage the orderly flow of electrons to sensitive systems in the vehicle!!!

i think you would still get a small voltage drop every time it kicks in tho probably not noticeable tho.

PS i HAVE FRIKEN YOGO WITH M&M's

[tryg]

I think you NASA scientists read into stuff too much.... its a very forgiving circuit.. running an even more forgiving 3-way fridge...

once power available to the relay, circuit open.. it works, trust me....

[Fitter]

relay to boost power is all good.

but yeah, i will never go straight to a battery for power, always ignition barrel

[Blakey]

relay to boost power is all good.

but yeah, i will never go straight to a battery for power, always ignition barrel

relay kicked in yo.

a relay doesnt really boots the power, it doesnt create power. its just basically an electrcally driven switch, so you can get power from elsewhere without overloading what you want to use to turn it on.

[JaCe]

Just out of interest, with a small 400w RF aftermarket monobloc amp (plus factory RF amp/MMCS), how long would the battery last if listening to music or watching DVDs with the engine not running? I'm not talking very loud but, moderate volume. I know there's no clear cut answer but curious because my Civic's battery died after 5 hours (with a 400w RF system).

[WTR]

Just out of interest, with a small 400w RF aftermarket monobloc amp (plus factory RF amp/MMCS), how long would the battery last if listening to music or watching DVDs with the engine not running? I'm not talking very loud but, moderate volume. I know there's no clear cut answer but curious because my Civic's battery died after 5 hours (with a 400w RF system).

More info required ..... battery capacity ( ampere/hour rating )

amplifier INPUT ( not watts output )

[SIR-VRX]

Condition of battery, other accessories etc

I know mine drained after 5 hours (I have 2 amps, stock HU) but it wasn't totally flat, just below the voltage the car would allow it to start at.

[Blakey]

Just out of interest, with a small 400w RF aftermarket monobloc amp (plus factory RF amp/MMCS), how long would the battery last if listening to music or watching DVDs with the engine not running? I'm not talking very loud but, moderate volume. I know there's no clear cut answer but curious because my Civic's battery died after 5 hours (with a 400w RF system).

More info required ..... battery capacity ( ampere/hour rating )

amplifier INPUT ( not watts output )

The stock battery i think its 80-100 something A/h

and from the watts you should be able to work out the current draw.

P=IxV

so I=P/V

400/12 = 33.3A

so with a battery of 80-100 your battery should last about 3Hrs

but remember Amps dont use that much power all at once so i would say at listening volume, id say it would last about 5hrs maybe even 6hrs

[tryg]

sounds about right, although mine can die under 2-hours...

Too much power draw with a too small battery!!

My lights dim to the beat...

Sad.