Cheap 18650 Li-ion Charger

I bought a cheap charger from DealExtreme for my 18650-size lithium ion batteries. My other cheap charger will charge most 18650’s (though some are probably too long to fit), but it uses a lower charge rate that would take forever to charge up an empty battery. For instance, the small charger uses a 300mA charge rate and an 18650 battery is 2400mAh, so it would take 8 hours to charge that battery at a constant 300mA. And my big flashlight uses two 18650’s and the little charger can only charge one at a time.

So I found this other charger for $7.92 shipped that has two independent charging bays, supposedly charges at 1000mA, and stops charging at 4.20V like it is supposed to.

http://www.dealextreme.com/details.dx/sku.6105

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Ultrafire MCU WF-1200L

My first impression is that it is smaller than I thought, but also heavier. This is a serious hunk of metal! One nice thing about getting it second hand from a CPF member is the guy I bought it from treated it very well. There aren’t any marks on it that I could see. Plus he made sure to lubricate the o-rings and actually modified the tail switch so that you can halfway press it and the light comes on momentarily (all of my other lights have reverse clickies that you have to click all the way on and then let go before the light comes on; this light has a forward clicky). One of the reasons I got this light is that it had very good heat sinking and comes completely apart. The LED is mounted to a large brass pill that screws into the throat of the flashlight (threaded portion is 29mm diameter and the part that holds the driver is 23mm). The brass carries the heat from the LED directly into the body of the flashlight near its heaviest part. People talk about the light getting fairly hot after using it for a while, and that is a good thing. What would be much worse is the body staying cool while the LED cooks itself. Still, I left the light on for about 15 minutes and it only got warm. It would be pretty neat to be able to buy an extra pill and add my own 21mm driver and LED (maybe a warm P7 or a SST-50), almost like having a drop-in.

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Ultrafire WF-504B with XR-E R2 Drop-in Review

I was interested in getting a flashlight that could accept P60 drop-ins. After reading Don’s review at jayki.com it seemed like the 504B (from DealExtreme) would be a good choice for a host because he felt like the heat-sinking was good and he liked the button. It looks good too and it is able to tailstand. I figured since the anodizing on these is Type II instead of the more durable Type III that I would be better off with the natural aluminum version because it wouldn’t show if any of the finish flaked or wore off. I liked the shiny finish in the pictures (looked like stainless steel) more than the shiny black finish (it seems like black should be more of a matte finish than glossy).

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AeroPress Coffee Maker

I got the fancy coffee maker I wrote about earlier. It’s just a collection of plastic pieces. If you saw them, I don’t think you’d guess they are for making coffee. They almost look like medical or lab equipment.

I’m not sure if it is because I am using twice as much coffee, or if the thing really works, but it does seem like the coffee is better. If I followed their instructions they would have me using 4 times as much coffee as I use in my Mr. Coffee. So to make it stretch further, I am increasing the stirring time and adding more hot water. The water is probably a little hotter as well. I know if I used freshly ground beans, it would go way up in quality, but I don’t have a grinder or any beans, so that is something I may do later.

I have made coffee with it three times now. The most time-consuming part is heating up the water in the microwave. It takes about 3.5 minutes to get 8 oz of water to the right temperature. While it is heating up I can load a small filter in the bottom of the maker and measure out the grounds. Then wait on the microwave. As a hungry Homer Simpson said on meatloaf night “Isn’t there anything faster than a microwave?!” So then you pour most of the water into the maker, stir, and just set the plunger in to make a good seal, but don’t press. Now add some milk to the rest of the hot water from the microwave and put it back in the microwave for another 30 seconds or so. The reason you put the plunger in first is otherwise the water will all gravity feed through the filter. So then you press and you find out you press the water out pretty quickly and most of the time you’re just pressing air through the filter. It seems kind of silly to press air, but it does help in the cleanup because the plunger is like a squeegee down the inside of the other chamber. Once you’ve done that, add the rest of the hot water to the cup (the coffee has drained directly into the mug).

One thing is you don’t get that coffee smell in the kitchen, which I guess is good because maybe that lost flavor is going into the cup instead. Once you are done it seems like there are a lot of parts. There is the plunger, and then the container and the filter cap plus the stirrer and you have to have a second mug to heat the water in originally. With the Mr. Coffee there is just the basket and the coffee pot and they all go back together to air dry. So I don’t think cleanup is as easy, but you can heat up water any way you want, so you aren’t dependent on electricity. Some people have a special boiling hot water tap and that would really speed things up. In fact, this would be ideal for people like that. There are a ton of reviews on Amazon and some people take this to work with them because the community coffee isn’t that good and they want to make their own.

A Good Cup of Coffee

Today I was researching coffee for some reason. So I started off researching french press coffee makers where you pour hot water over some coffee grounds and then force a strainer down over all of that and wind up with coffee on top and grounds trapped at the bottom. The nice thing is this is a pretty simple machine and they are cheap. People swear by these. I was watching a show on Discovery about coffee (maybe that’s what set this off) and a couple of the experts said that is their favorite way to make coffee. The problem with the french press is the filter is pretty porous and it lets fine grinds past, so you end up with cloudy coffee with some sediment. You can avoid that by grinding the coffee to end up with bigger chunks. Sounds simple, but most grinders can’t do that and you end up with some big chunks and some little ones in economical grinders. So french press lovers say you need to spend $200 on a special burr grinder that will only produce big chunks of beans. So much for economy: a $15 coffee maker requires a $200 grinder.

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