As a photographer, I use a printer at events that in turn, uses a 1000W mains inverter that has clips to attach directly to the battery.

I can't see in the specification anywhere, but does anyone know what the current capacity of the bike preparation connector is?

Seeing as the battery is quite awkward to get to, I figure that this connector would be more convenient when printing on location.

Check the fuse rating for it at the fusebox may probably be the easiest way to check. It's unlikely to carry that kind of rating though. The 1kW inverter I used to use had 4x 30A fuses in the supply. I ran it direct from the battery, and that was a separate and much larger 130AH equipment battery rather than the vehicle battery, and with dual charging systems installed.

1kW at 12V DC is 83 Amps. That's close to a lot of alternator output levels which means you'll need the engine running in all likelihood.

Would a small generator not offer a better option? At least you won't inadvertantly kill your vehicle battery.

Thanks. The printer takes about 500W as it starts up for a half second maybe, after that, it's much more acceptable. I used to use it with my 330d - If there was a lot of printing, or a long day, I would start the engine.

Thought it was worth checking, but I'll stick to connecting directly to the jump start points I guess.

Out of curiosity what printer? 500w inrush is huge.

It's a DNP DS40. Spits out photo quality 6"x9" prints in 13 seconds. Can't post a link, you'll have to google it, Photomart sell it in the UK.

I can't even get the photo printer I use in the Mini..:D

Canon iPF6350 for the large stuff. The Pixma Pro-1 might fit, but neither are designed to be used in a 'mobile' way....:) not buying a Transit:p

I would go for the charge points myself. As you say, it's the instantaneous 'kick' to run the units up that's the ouch bit - electrically.

I don't think A3 or A2 prints are quite the thing for events anyway! The 9" x 6" stuff goes down well though.