To be honest, probably not much longer. Even if it lasts twice as long,that's only one hour. I think there's another big problem somewhere. I'd want to establish that the battery is definitely getting fully charged before you start the laptop work. Then see how long it lasts on the 240V inverter.
This one might do for you.
This one might do for you.
Error 410 | Screwfix
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For measuring voltage and resistance, any cheap multimeter will do. But be careful choosing a clamp meter. Many of them are intended for electricians working on mains wiring, and will only measure AC amps, not DC. Of those that measure DC amps, most of those will only measure quite high amps values, and are not very good for tracing small battery drains of less than one amp.
Yes, that's the kind most people have, and will measure voltages, resistance and continuity (= checking for breaks in wires, bad contacts, blown fuses etc). Measuring amps is a bit of a fuss with a meter like this, but it's not often required.
I'm going to get on with it today. I think I am a bit daunted by this high tech multimeter thingymajig. It keeps staring at me every time I go in the kitchen and I know I am doing everything I can to avoid it.I still want to know what the actual batteries are that have been fitted, we don't even know if they are kosha leisure ones.
Do the non-male thing. Read the instruction manual!
I've got visions of him just sitting in his kitchen twiddling it!Do the non-male thing. Read the instruction manual!
It's fairly simple, eg if you want to read voltage the black plug usually goes in the "COM" socket and the red in the "V" socket. Turn the dial to the appropriate voltage range, probably something like 20v DC. Black probe goes to the -ve terminal and red to the +ve terminal on the battery. Read the lcd screen and you've got the voltage.
Cold shower required for you, young lady!I've got visions of him just sitting in his kitchen twiddling it!
I couldn't possibly know what you are alluding to!Cold shower required for you, young lady!
Truly awsome! Looks like you've managed to achieve Government standard testing on your first go. Done the test, then the results are not available for a weekFollowed the instructions to the letter. Awesome!!! Can't believe I managed to do something so macho
I wrote all the measurements down on a sheet, but stupid me left them on the kitchen top and we've now set off on an adventure. I'm going to get my son to photograph them and then I'll put them up here for you to critique
Are you saying that only laptop manufacturers can make a stabilised 19V power supply? I've used laptops on 12V adaptors since the last century, from PC World, Maplin, Conrad, MediaMarkt and others. I've never had a 12V adaptor from a laptop manufacturer. I'd bet that manufacturers buy in and relabel their mains power bricks anyway. Saves all that expensive EMC and Safety testing.
Howdy Clive
... Mel B here ... how you both doing?If you're after a portable espresso maker, I recently got this one (link below) and I can ABSOLUTELY recommend it. You can charge it from the cigarette lighter, and if you pour in hot water (heated on the hob) it will make approximately 200 x espressos. (in about 90 seconds each) If you're out of gas, it will heat water from cold, but takes about 10 minutes, and you'll only get 3 espressos from a full charge. (but it will work from a 12v socket even if the internal battery is drained). It uses Nespresso capsules, so there's no mess too. Makes a really impressive brew.
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