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FAQ

Hello, does anyone know where I can find a rechargeable battery pack for electronic devices? Maybe something like a large brick that I can take with me and plug a guitar amp into? Or anything else, for that matter

If you don't mind lugging something heavy around, get a deep cycle automotive battery, preferably a sealed spill-proof type. Then get an AC inverter that puts out enough current to power your amp. A 500w inverter is enough for a 100w tube amp. To recharge, use any car battery charger. If you want to downsize that a bit, search yahoo shopping for a NiMh 12v battery pack. You will have to get a specialized charger, though. A car charger will destroy a NiMh pack.

i found a couple of package deals, some with the battery pack and some without. do you need the battery pack for the wii to work or can it work with it? also if it is an addition what does it do?

The Wii fit board uses batteries. The battery pack is for the board, you can play without it by using disposable batteries but if you play it everyday as you should you'll burn up a lot of money on batteries. I would get the battery pack. I have one and there is no telling how much money it has saved me.

I have a flip cam ultra (NOT HD) and I wanted to buy the chargeable battery pack. Does that only work on the HD version/ is there one I can buy that works on my camera?

You did not state which Flip Ultra version you have, 1st or 2nd generation. But both generations just uses AA batteries. You could use rechargeable AA batteries but they will not charge in camera.

i have found that the d300 shoot 6 fps and when the Battery Pack is on it shoot 8 fps will a battery Pack on a nikon d90 soot faster fps ? and if so how mush more than it normal 4.5 fps any info on this wood be fantastic

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i wana make a portible outlet/battery packso i can use my corded drill outside (im to poor to buy a cordless one)

You cannot for less than you can get a cordless drill set for. The cheapest thing you can do is get an extension cord.

I have a new electric snowblower and it works well, except plugging in the cord and keeping it straight it a pain. I'm wondering if they make battery packs that you can charge and then hook up to the snow blower (kind of like they have for most weed whackers now). Does anybody know if there's something like this, and where to find it?

I would be afraid of electrocution with one of those.

Hi guys, I have a rechargable battery pack for my 360 controller and i can't findout how to charge it, I don't have a cord for my controller, Or a charger, *if there even is one*, So does anybody know how i can charger it without said things.

you cant

DUE TONIGHT PLEASE HELPA 90 kg astronaut floating out in space is carrying a 1.0 kg TV camera and a 10 kg battery pack. He's drifting toward his ship but, in order to get back faster, he hurls the camera out into space (away from the space ship) at 18 m/s and then throws the battery at 11 m/s in the same direction. What's the resulting increase in his speed after each throw?speed increase after discarding camera.?speed increase after discarding battery?

The key here is to remember that momentum is conserved. Momentum is mass times velocity. Are you sure you've got the masses right, surely the TV camera is heavier than the battery pack? Since (relative to each other), neither astronaut, nor camera nor battery is moving, the total momentum can be taken to be zero. So after throwing the camera away, the total momentum should be zero m/s. That means the astronaut should have equal momentum in magnitude, but opposite in direction, to the camera. Let's take the direction the camera was thrown in to be negative. Then the momentum of the camera after it is released is (1.0 kg)(-18 m/s) -18 kg m/s. So the momentum after discarding the camera must be 18 kg m/s. Dividing by the mass of the astronaut (plus battery pack, as he's still got it at this point), which is 100 kg, gives an increase in speed of 0.18 m/s. Now we do the same thing with the battery pack. Since, relative to each other, neither are moving, we can say that the total momentum before releasing it is zero, so the total momentum after releasing it must be zero also. The momentum of the battery pack, since it is thrown in the negative direction also, is (10 kg)(-11 m/s) -110 kg m/s. Therefore the total momentum of the astronaut must increase by 110 kg m/s also, and dividing by the mass of the astronaut (90 kg) gives a speed increase of 1.22 m/s.