I'm looking for a good loud speaker that will run on C or D batteries (camping with no ability to recharge an internal battery). Bluetooth preferred so I won't need an aux cable. Any ideas?
Lithium-ion batteries are lightweight, fully rechargeable, and can pack a lot of energy into a small volume — making them attractive as power sources for hybrid and electric vehicles.
However, there’s a significant downside: Overheating and collisions may cause the batteries to short-circuit...
I am looking for a Bluetooth adapter that I can plug into my speakers via 3.5mm audio jack that will use the power from the speakers instead of an internal battery supply. My basic use is my iPod's Bluetooth hooking up to it and playing music through the sound system.
The U.S. Dept. of Energy has big plans. They want batteries that are five times more powerful than what we've got today, and they want them to be five times cheaper. All that in just five years. It's a tall order, but they've got a plan: recreate the Manhattan Project. More »
I am making a robot and am going to use a 12v DC motor and the battery I am going to use is a 9v rechargeable battery,
Is this suitable having a 9v rechargeable battery powering 2-3 12v DC motors.
Or should I use 9v DC motors.
Also approximately how fast will a 9v and 12v DC motor go.
If I...
I have a 2012 Chevy 2500 Express van that we use to haul our bikes for racing. I have a Kenwood KAC-9105D mono amp (900 watts RMS 1800 watts max) powering two 12 inch Kenwood subs. I am adding another amp (Kenwood KAC-8405 4 Channel 60 watts RMS per channel) to power all the mids and highs...
Most battery advances concentrate on improving hardware, but researchers from the University of California San Diego have developed new algorithms that can cut lithium-ion battery charge times in half. More »
I have a few mobile phones in possession... each of their chargers are provided; most of them have similar voltage output but there are some chargers with different amp output... e.g.:
Samsung Galaxy S II - Output: 5v 0.7A,
Samsung Galaxy Note - Output: 5v 1A.
I have a multitude of battery...
Graphite is a common choice for anodes in Li-Ion battery systems but doesn't store much charge for its bulk. However, 3M's newly-devised electrode could boost battery life and replace the soft-carbon material for good. More »
to power a crescendo BC5500D?? any suggestions?
are u positive because i had voltage drop with one yellow top up front and stock 70 amp alt on a AQ2200. and now im up grading to a crescendo BC5500D .and the big 3 is already done. all 0 gauge.
at airforce . i haven't had any problems with the...
Ok if I get this and the rechargable batteries do I have to keep getting a new pair after I use the the first pair then charge it again then I have throw those away and get more? Please would help a lot best answer gets 10Points!!!!
...Civic.? I have Shuriken BT80 battery in my trunk and Yellow top under the hood .I want to replace my yellow top with something with more power .Need help all i know is kinetics 1400r ,Stinger V35, Xs 5100r fits the car can anyone else tell me any other brands and models
I already have a pretty good idea of what I'm going to write, but if you give me any more ideas I'll re-word them and everything. I'm just really stuck on making the intro longer and making it flow a bit better.
I'm not writing an essay-like thing, so there's really no story to it. It's written...