A battery is a source of electric power consisting of one or more electrochemical cells with external connections for powering electrical devices. When a battery is supplying power, its positive terminal is the cathode and its negative terminal is the anode. The terminal marked negative is the source of electrons that will flow through an external electric circuit to the positive terminal. When a battery is connected to an external electric load, a redox reaction converts high-energy reactants to lower-energy products, and the free-energy difference is delivered to the external circuit as electrical energy. Historically the term "battery" specifically referred to a device composed of multiple cells; however, the usage has evolved to include devices composed of a single cell.Primary (single-use or "disposable") batteries are used once and discarded, as the electrode materials are irreversibly changed during discharge; a common example is the alkaline battery used for flashlights and a multitude of portable electronic devices. Secondary (rechargeable) batteries can be discharged and recharged multiple times using an applied electric current; the original composition of the electrodes can be restored by reverse current. Examples include the lead–acid batteries used in vehicles and lithium-ion batteries used for portable electronics such as laptops and mobile phones.
Batteries come in many shapes and sizes, from miniature cells used to power hearing aids and wristwatches to, at the largest extreme, huge battery banks the size of rooms that provide standby or emergency power for telephone exchanges and computer data centers. Batteries have much lower specific energy (energy per unit mass) than common fuels such as gasoline. In automobiles, this is somewhat offset by the higher efficiency of electric motors in converting electrical energy to mechanical work, compared to combustion engines.

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  1. Fabian12


    Trying to figure out how many batteries (ah) needed to properly abuse my zv5 15. gear: SIA 3500d, Zv5 15, Big 3 + 2/0awg power and grounds , 60ah regular battery up front, and 100ah agm in the rear. System sounds great into the very loud lows, but kinda breaks up (assuming power drops) when...
  2. I

    Subwoofers get quite then loud again

    hey i have a simple question with Hopefully a simple answer now the setup I have going is not practical I know i know that I don't have them running in a efficient way but any how I have taramps hd3000 1 ohm to a power acoustic mofo 122x dvc 2ohm @ 4ohm and a rockville db15 running a power...
  3. R

    Need help buying new batteries and some knowledge on my system

    Im in the need for new batteries and was looking for some recommendations. My system is 8-10 years old Amps: I have 4 JBL GTO-1001EZ and 1 JBL GTO-804EZ. The mono amps run 4 JBL W12GTi MkII subwoofers. the 4 channel amp runs to four focal 6x9's, do not remember model. The dash unit is the...
  4. Michael Poole

    Wiring 2 alternators to completely separate batteries

    Hey guys I'm brand new to this forum and need a little help. I apologize up front if this question has already been answered. If so please shoot me a link. I've scoped the internet far and wide and can't find a good answer. Anyway, let's get to the point. I'm in the works of new audio build and...
  5. adulbrich

    Lithium batteries in the cold

    My bike wasn't starting the other day. It was cranking sluggish. It was getting fuel though, because I could smell it out the exhaust. Figured it just wasn't cranking strong enough. Tried pop starting it and it still wouldn't go. Even tried jump starting it. I got a new battery a couple months...
  6. nyoc

    New build, big for me, have some questions

    I am working on a new build. It's my biggest yet, 5-8k. I'm going to be running 2 American Bass 15" HDs powered by either a Taramps 5k, 8k or Soundigital 8k. I have 3 Duracell DURDC12-100P and I'm getting a CES 300 amp HO alternator. I plan on 1 run of SHCA 1/0 gauge OFC from the front battery...
  7. nyoc

    Possible battery option?

    I was searching for a decent deep cycle agm battery and came across this one: OCEAN HY12-100. Here's some more info: OCEAN HY12-100 12V 100AH DEEP CYCLE BATTERY FOR SOLAR AND WIND POWER STORAGE Cost effective, High Quality AGM Sealed Lead Acid Deep Cycle Battery for your Solar and Wind Power...
  8. @

    how to run 3 batteries? (1 under the hood 2 in the back)

    Hey fellow car audio people,I already have a stinger SPV44 660 amp battery and I'll be buying another one soon but I have no clue on how to wire the 2 together. I'll basically be running my normal battery under the hood and these 2 in the back. Obviously I'm just getting into the bigger systems...
  9. adulbrich

    Battery discussion

    Batteries are for reserve power, yes, but another member who's no longer active and I have had similar experiences with batteries. Here's what I've found: When adding batteries, max charging voltage decreases. For example, with one battery in the bank I charged at 15.2v cold and 15.0v hot. With...
  10. adulbrich

    Do I need Bus bars?

    Well, between each battery would only be 4" of insulated wire. With that short of a run, it should be able to handle quite a bit of power, right? There would be five banks of six batteries connected like this. In each bank, there would be six batteries connected in parallel like this "daisy...
  11. adulbrich

    Adulbrich's batteries

    Goth 32 of these ******* today! Long story. I applied for a battery shop a while ago. Never got a call back. Went to the shop today during my lunch break. I intended to buy four more group 49's like I had ($150 each). Manager showed me a pallet of these in the back: He said they got 40...
  12. adulbrich

    AGM switching to Lead acid

    Well, I'm considering switching from AGM to lead acid. My battery bank is in the bed of my truck, so I'm not concerned about the gas that's created when the batteries charge. I have money in the bank and can trade in my year old AGM's for partial credit on the new purchase. I'd like to get a...
  13. Aleks15Civic

    Do I need additional batteries if I got a 320amp HO alternator to power 5000w?

    I'm about to run some serious upgrades. Planning on pushing 5000w RMS. I just ordered a Singer 320amp alternator. I currently have 2 xs power XP950 batteries. Assuming: My engine will be always running. I will only push past 1000 watts when demoing. Never for longer than a single song. Well...
  14. okurk5

    battery/power cell

    I would like to buy a batt or power cell im pullin 120 volts just somthn small??
  15. L

    Please Help! Power Problems: Alternator/Batteries

    Hi there, i am in urgent need of an answer, i have been on the research for ages and cannot find a decent answer. I need to find a method to sufficiently power the system without necessarily replacing the alternator for a high output one. My situation is, i have a ford falcon 2005, it runs a...
  16. S

    XS power battery

    Either 3400 or 3100 just let me know what you have
  17. M

    best large agm deep-cycle batteries

    Just looking for the best massive agm deep cycle batteries. I've seen recommendations for the ones you can find at oreillys, but I have no idea how good those actually are. I just started the search for batteries and I need some recommendations.
  18. supereikenator

    Battery suggestions?

    Time for me to replace my cars original battery, instead of getting a normal one, I want to get one that will support my future amps, it won't be much, Soundqubed 1200 and a solid 300 watt four channel. The car is an '08 xB, any suggestions for solid batteries that will last long, not break the...
  19. x91evo

    School me on batteries

    I am going down to 12V (14V charging) system from a 14V (16.5V charging). I need a solution for the most cost efficient batteries for 2000-3000RMS. Car is set up for SPL but will mostly see music everyday. So I need the car to be reliable even in -20 degree or less Chicago winter lol Looking...
  20. tundra1221

    help: 16v batts and HO alt

    first time messing with 16v stuff. first of all if i get a HO alt that charges at 18v will that mess with the rest of my cars electrical? Can i run 12v batts off of a alt that charges at 18v? what are some good cheap 16v batteries? how many AH of 16v batts would i need for a 6k set up? what...
  21. I

    What electrical upgrades would I need...

    Looking to upgrade my electrical before I beef up my sub-stage in my 03 Silverado. What do you all think I would need to run 2000-3000rms daily. I'm figuring id need at least another battery or two with an alternator? Really kinda lost on what would be a solid foundation.
  22. Joe562MMA

    HELP?? to isolator or not to isolator

    ok i been deciding weather or not to run an isolator for when i install my 2 back batteries i heared isolators are usless .. then i heard that i can run a isolator relay,,which just looks like a solenoid to me any help would be appreciated.. im running a 235 h/o alt// one yellow top optima in...
  23. FadedSpy

    Looking For Some Help...Just Starting Out...HO Alternator?? Battery?? Batteries???

    Hey there everyone! I just stumbled across this website while I was trying to find answers to a few of my questions and have been browsing through some of the threads trying to find answers. I've learned quite a bit in the last few days but figured maybe if I just posted some questions that I...
  24. ezekial130

    (2) Batcap 2000s

    Item(s) for Sale: (2) Batcap 2000s Item(s) Description/Condition: Both are in fine working condition, but do look used and have scratches. One has a permanent stud due to the fact that when i bought it from someone else on here they did not tell me there was anything wrong with them when one...
  25. B

    Need some Electrical Help!

    I apologize because I know this information is out there, but I can't seem to find the Formulas for figuring it out. I am going to be running 2 12" T3 T.2000's (2k+ rms) 2 American Bass PH4000MD's (2k+ rms) and components w/ 4 channel (roughly 500rms). Currently have all 2/0 Neoprene Cable...
  26. B

    Items needed to Finish my Install (Batts, Alt, 25ft. 1/0 wire)

    Want to Buy to finish my install. Still need Batteries. Running about 5k daily, so I figured I'd run an XS D1200 under the hood, and a D3100 in the trunk Also need about 25ft. of 1/0 to finish my Big 3. Doesn't matter which color but I want quality wire. Could use some good ring connectors as...
  27. soundsolutions

    XS POWER Group Buy | Details Inside

    You asked for it, you got it! XS Power has authorized SSA for this exclusive group buy on all of their products. Enjoy SSA's exclusive Flat rate shipping program with XS Power along with 15% across the board!
  28. H

    Power caps

    whats the difference between the STINGER SPC5050 CAP NEW 50 FARAD DIGITAL PRO CAPACITOR and STINGER 35 FARAD HYBRID CAPACITOR. The 50 farad is cheaper than the 35 and i dont know why. The 35 retails at alot more as well. So any advice?
  29. kustomciv

    Capacitor & Second Battery Questions

    Okay talking to local "Experts" and then getting on google and researching is about to drive me batty. Completely different opinions on everything I have asked so I am going to ask here Local "Expert" said that a capacitor would be a good investment to have less strain on my alternator. Google...
  30. T

    4000 watt electrical upgrades?

    I know i need the big 3. but what else do i need what size alternator? and batteries?
  31. B

    Battery Help

    Okay, now I have a system that draws over 1000 watts and I hear I need a new battery. I burned out my stock alternator and had to spend my money on a new alt instead of a battery... now I have a 200 amp alternator and a 3 year old 540 cranking amps Everlast battery. The specs of my amp are...
  32. S

    How Many Batteries and What Batterys for New Setup???

    I just got 2 Planet Audio BB2400.1 I heard they are stable at .5 ohm with a good electrical. Whats everyones input on a good electrical for 2 of these at .5 ohm each? I have a 2004 monte carlo ss Mechman 270a alt, 2 runs of power 1/0 knu konceptz and 2 runs of ground as well. I just need to know...
  33. S

    WTb: D3100s, Hc2400s, hc3800s, Deka Group 31s Ect

    Looking to buy some good batts for a decent price. I need enough batts to support 2 planet audio bb2400.1 at .5 each amp so it will need some current. I have 2 runs of power in knu 1/0 and 2 runs of ground as well. And a Mechman 270 amp alt. SO just need a few good batts.
  34. rfluvinmf

    Northeast ohio

    I'm looking to trade my BNIB sundown 125.2+ cash for a couple of AGM batteries. I'm willing to drive maybe an hour or so to pick'em up. As for condition, I don't want anything beat to hell and back. Please include pics and price of what you have. Thanks in advance. If someone wants to buy the...
  35. J

    good electrical system ?? help plz

    ok i will have 2 12"s and mids plus highs (2 amps, 2300 watts rms total) i will also have a power invertor (1000 watts rms) plus led lights in the car and underbody kit to. What should i do to the electrical system ? I have an HO 220 amp alt an stock batt. I really dont wanna hook up 2...
  36. DSHORT

    Kinetic HC2400 + NEW HC1400 CHEAP

    I have a Kinetic HC2400 which was used for about a half year powering a 3500D.1 by a friend of mine who sold it to me a couple of weeks ago. Well taken care of. $175 plus shipping [Weighs 70 pounds] Also, a brand new HC1400 which I bought off eBay a month ago. Will come in Kinetic box. $150...
  37. man_n_da_trunk

    question concerning two batteries in my trunk please help car

    okay heres my question to all car audio experts on the matter. i was told that with my system to get max power out of my amps i would need to run two batteries in the trunk. okay the first battery in my trunk will be ran off of my battery isolator. my question is if i add another battery in the...
  38. Phoenix Risen

    High Output Alternator,

    I have a 2008 hyundai tiburon that im looking into getting a HO alternator for it. does anyone know where to get one. preferably one that is a direct bolt on or doesnt take much modification to make it work, mainly because the car is still under warranty and i dont want it to be extremely obvious