anyone know about car electrics?

[Ayahuasca]

I want to run electric power tools i.e. angle grinder / drill, etc from my car (LR Defender). I understand an inverter will convert 12v car power to 110v (or whatever) power tool power. Is it as simple as just plugging the inverter into the cigar lighter? I guess that will run the battery down so if the car engine is running will that provide enough juice to keep everything topped up?

I know nothing about car electrics.

Ta.

[Sixpackpert]

Just stick a genny in the back?

[Ayahuasca]

I should add it will be used only when I am getting my boat fixed up. So a shortish term project. A generator seems a bit extreme!

[McWigglebum4th]

To run a grinder you will need about 1kw

A 1kw inverter is about £130

A 1kw generator is about £200

Or you could get an old 110v generator that bolts into your transfer box of the defender but they are fecking rare

[JM]

McWigglebum4th said:

To run a grinder you will need about 1kw

Is a 1kw inverter ok to plug into a cigarette lighter, or would it require connecting direct to the battery?

[littleredrooster]

JM said:

Is a 1kw inverter ok to plug into a cigarette lighter, or would it require connecting direct to the battery?

Direct to the battery with fekkin' hefty leads - bigger than jump leads. It will flatten he battery in...erm..about 12 minutes.

But I've just finished a bottle of wine so my mathematics may be suspect...

[LarJammer]

Cant do the maths right now but a cig lighter usually runs off a 20 amp fuse, not enough for power tools.

[JM]

littleredrooster said:

JM said:

Is a 1kw inverter ok to plug into a cigarette lighter, or would it require connecting direct to the battery?

Direct to the battery with fekkin' hefty leads - bigger than jump leads. It will flatten he battery in...erm..about 12 minutes.

But I've just finished a bottle of wine so my mathematics may be suspect...

That was my thinking, not had as much wine, yet, but doing other things....

[defblade]

Wattage must be pulled from the battery to the lighter socket, so 1,000watts @12v = 83amps (assuming the invertor is 100% efficent)

Ring the fire brigade before you turn it on, it'll save time

[Gruber]

defblade said:

Wattage must be pulled from the battery to the lighter socket, so 1,000watts @12v = 83amps (assuming the invertor is 100% efficent)

Ring the fire brigade before you turn it on, it'll save time

£200 for a generator looks increasingly like the right answer!