Q:How do I calculate the number of batteries in the UPS battery pack?

Mountain C2KS, DC voltage 72V, you need 6 batteries (one is 12V), an input head, a group can be. APCSURT10K long machine, DC voltage 384V, requires 32 batteries, two input head, then the two groups of 16 access.

Q:A back up battery packUninterrupted Power SupplyExternal Power SupplyBack pack

Uninterruptible Power Supply.

Q:I heard it was possible to make a portable 12v source by combining 1 transistor battery and 2 double A's. The reason being is because I am wanting to test some 12v cold cathode lights that I bought for my car and test out different positions in the car before I hard wire them.Will this work? Are batteries DC?

What is a transistor battery? Two AAs will produce 3V. Obviously you need to get 9 more volts from somewhere.

Q:cuz i got an electric snowblower. i know. it sucks! it mostly sucks because i gotta deal with a cord in the winter. it gets very hard to deal with. do they make battery packs that i can plug into it and then eliminate a cord? or is there something like that but instead of batteries, it sends a signal to a receptor plugged into the wall, eliminating the cord??thanks

You've just learned why it is not a great idea to have an electric snow shovel. That power cord is a dang nuisance! The answer to your question is not quite no. There ARE rechargeable battery devices that will supply 110VAC to operate your snow shovel; but they are heavy and not intended to be carried around. They are for emergency use of 110 VAC appliances where there is no available AC outlet. You can find them in Auto Supply stores and truck stops. They typically have both heavy-duty battery clips to connect to a car battery, as well as a standard AC power cord. This way the batteries can be charged up on the road or in a dwelling. The batteries themselves are small versions of car batteries; and as you know, they are not light. Add in the transformer to up-convert the voltage, and you've got a rather heavy device to lug around. As you might guess, this is an impractical way to operate your electric snow shovel.

Q:i heard there was a way to fix a 18 volt cordless battery that wont hold a charge anymore.

You have to open up the battery pack and replace the batteries. They are usually NiCD or NiMH. 18 Volts 15 pcs x 1.2 V rechargeable batteries. Use the same size (e.g. AA) and make sure the AH rating is the same or higher than the old ones. Buy replacements at your local Radioshack or electronics store. You need to solder them together in series. Use heavy gauge (14 awg or higher) solid copper wire. You can pound the wire flat with a hammer to reduce its thickness if space is an issue. Use the shortest length of wire possible to reduce resistance. Optional: You can remove the positive end caps from the batteries and solder directly on the positive terminal to reduce resistance. Resistance is a very big issue in low voltage DC appliances because the smallest rise in resistance can cause a large drop in voltage and power. Good luck and save money!

Q:I have a 7.2v 1100 nimh battery pack. I want to power the motor with solar cells. Should I use five 1.5V 135mA cells or seven 1.0V 415mA cells? Thanks for any input you might have.

what is nimh? I suspect 1100 is mA-hour, and that is a battery capacity, not a current. You need to know the current drain of the motor. If it is 1 amp, for example, the battery pack will operate the motor for 1 hour, if it is 0.5 amps, the pack will operate it for 2 hours. The second is much more powerful, use that (1v 415 mA) Assuming the motor draws 0.5 amps (500 mA) at 7.2 volts, then in theory you can use 7 of the cells in series to get 7 volts at 415 mA. But only if the sun is very bright where you live. If it is at any angle to the panel, the voltage and current drops off rapidly. Plus manufacturers tend to overrate their cells, so, for example you can get 1 volt if the current is low, or 415mA if the voltage is low, but not both. In that case you will need more cells than 7. .

Q:How do you charge your 360 controller battery pack? It didnt come with a cord or anything?

If you have the usb Cable charger You can just plug it in to that I have the dual pack charger . Other than buying rechargable batteries and use those are basicly your options

Q:If I get the battery pack, will the batteries last a long time or do they finally wear out after so many recharges? Is it worth buying a battery charge pack?

yes definitely, buy a play and charge kit, its 15 or 20 bucks in some places, very worth it, if not try and find a pair of double aa betteries combo with a charger, try 2 get 1 with a high capacity like 2000 mAH

Q:I have that cable from the plug and play charge kit. I was wondering if the cable recharged regular batteries or only the battery packs

Heyas i think it would be battery packs there are like cheap rechargeable kits from 9 ? energizerthey are pretty good

Q:I have the Canon Powershot SX30 IS, which came with a Canon Li-Ion battery pack. After a battery fiasco at the TXRenFest, I'm searching for good back up batteries. The battery pack that came with it is a 7.4v, 1050mAh, 7.8Wh. The Canon batteries are so expensive! I've found several others that range from $7 - $15 (Canon is $30 - $70).My question is, will using a non Canon battery hurt my camera?

I have several non-canon battery packs for my cameras and I have loved them. Some of them perform better than the Canon's. As long as it is for your camera I wouldn't worry about it.