As of this morning when I switched off the charger, my "12 V" battery has 15 V across it. This startled me, because I never remember that a lead-acid cell has a capacity closer to 2 V than the "a little more than 1.5" that I keep expecting. (Not that batteries usually measure what they're labelled as. For example, a fresh-from-the-store AA cell is 1.6 V; depending on what device it's trying to power, "dead" will probably mean something under 0.8 V.) I'll check it again just before putting it back in the car.
Then I came upstairs and had another "Doh!" moment when I realized why the iMac couldn't find anybody else even though everyone else replied to its ARP "who has" requests. Stuck a different Ethernet cable on it and all of a sudden it sees the world. So now I'm sucking iCab and Opera and Nifty Telnet through my narrow modem, and will see about the feasibility of iTunes later. (If iTunes for OS 8.6 is too big for my connection, I'll burn a CD at the home of someone who has broadband.) Interestingly, the copy of Microsoft Internet Exploder currently on it won't display http://www.opera.com. It refuses to treat it as a web page, and instead downloads the page as a generic file and sticks it on the desktop. Fortunately I wanted both iCab and Opera anyhow, so downloading iCab so that I can use it to download Opera is not a huge, time-wasting extra step.
Now if I can score a 250 W AT-style power supply before the one in my main Linux box downstairs finishes eating itself, and get my tires dealt with, I'll feel a lot more "together". (Except that I still need to pay my gas/electricity bill and sort out how I'm going to fuel my furnace. Urk. And figure out why neither electrical outlet in the bathroom is working, so I can plug in a space heater there. And put plastic on my windows. And ... drive myself nuts worrying about everything at once instead of a piece at a time ...)
Urk. Urgent distractions lately, and here it is nearly Samhain and me with no idea what Hallowe'en parties I'm going to try to get to (need to see how tired I am after car stuff, too), nor what I'm doing for a costume this year! (Which probably means repeating a past costume unless a really-easily-fabricated and entertaining idea pops into my head in the nick of time.) I never seem to manage to be prepared for the holidays.
Costume
Send me private email about the fuel oil and we can do something better than last year's fiasco.
{{Hugs}}
OTish: Heating with biodiesel
There's at least one site out there (mostly) about biofuels, with quite detailed info on them, but I remember finding one particular page there describing issues of using biodiesel for heating purposes, as opposed to motoring. You might want to read that before going further, if you decide to take that approach. There's quite a lot more on that site, but some of it's hard to find via the normal navigation.
FWIW, it sounds like it's pretty cheap to make depending on how you do it, but at the same time, apparently some of the ingredients and intermediate chemicals are pretty toxic and dangerous (methanol and sodium methoxide). It sounds as though they're manageable, but I don't know much about them myself- I have no personal experience of doing this.
(no subject)
15 volts sounds just a bit high. You might check the water in the battery to see if it's low. Most "maintainance free" batteries still have caps that can be removed, if you try hard enough.
Did you get the PCs we dropped off? They should both have AT power supplies.
(no subject)