how batteries discharge

How can I figure out about what the Average capacity draw will be on my second battery? My amps all together can pull 330amps of current. Im looking at this stinger battery and its mentioning how if I use an average of 400 cycles then Ill get appr. 100% of its lifespan and if i use 4000 cycles ill get about 10% of its life span. this is obviously understandable. But How do I know about how many cycles I will use? or is that just in how long and how roughly you play your radio?

Thanks

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I can't hear you!

I'll be over here (off to the side) waiting to see who/how this is answered......

I'd love to answer it, but I have no idea what he's talking about...

Where did this 400 cycles @ 100% stuff come from? I've NEVER in my life heard of this specification...

ANY lead acid battery will have a shortened live by allowing it to be deeply discharged, even a "deep cycle" battery. It's what happens to the technology. If you allow your battery to be discharged to around 10.5V loaded, (considered a full discharge for a standard, flat-plate, 12V SLA battery) you are already reducing the life of the battery by approximately 50%. ALL lead acid batteries like to be trickle charged, and will last FAR longer if they are. Even a standard alternator, re-charging a battery is hard on it - it's too much current.

Read this information, and maybe you will have a better idea of what's happening and may even be able to answer your question for yourself.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

According to what I am reading here, they are calling a cycle, a discharge down to 10;5 volts.  What I think they mean by that is, the battery will go from charged to 10.5 volts 350 times before the battery is toast.  But that is just my interpretation of the following specs of one of their batteries.  Gary, Gary, Why You Watching us from there?

SPV35

Internal resistance: <6 mOhms

5 Second Cranking: 525 Amps

Weight: 27.56 lbs

Constant Discharge Capacity at 77 degrees to 10.50 Volts:

20 hour rate: 1.75A/35Ah

5 hour rate: 5.95A/29.75Ah

1/2 hour rate: 43.75A/21.9Ah

CCA: 438 Amps

Temperature Range: -15 to +50 C

Typical Cycle Life: 350 cycles @ 100% depth of discharge (10.5v)

Maximum Charging Voltage: 15 Volts (Cyclic Use) 13.8 Volts (Standby Use)

(Add 5/8” to height for battery post)

STINGER SPV35
Dry Cell Battery Fots Honda & Acura 423 CCA

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Where are you trying to fit this battery?    If you are in a hond civic with the firwall mounted battery, you can remove the battery tray and fit any top post style group 34 battery.

IE the kinetik 1800 or similar.

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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place

400 Cycle @ 100% NEVER showed up in MY post. So im not completely sure where that one came from but like I am an idiot said The specs on the stinger battery says if i use on average 400 Cycles that I will recieve 100% of the batteries life which is about 4 years.

Here's the URL https://www.darvex.com/SP680/Stinger+680+Dry+Cell+Battery.html

I'm looking at it for my Audio system in my truck to put behind my back seat. And now it has me wondering how batteries discharge.

Right now I'm thinking that a Cycle is a discharge down to 10.5 volts from somethin like A Serious bass note? and i take it down that far to 10.5v often then the battery like will be cut very short. But if i am able to keep the electrical system up to around 12v (Even with serious bass note) then the battery should last much longer? So it pretty much depends on how consistently level I can maintain a high voltage even while playing my radio at any level.

Please correct me^^^

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I can't hear you!

Jeff I do not think he is trying to fit in a Civic, that just happened to be the first Stinger battery I found that particular spec on.

Typical Cycle Life: 350 cycles @ 100% depth of discharge (10.5v)   =  This battery is expected to survive 350 cycles @ 100% depth of discharge.

Depth of Discharge = voltage drops to and stays at 10.5 volts or below.

This means that the battery is expected to give you around 350 times of charging and then draining to 10.5

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Yeah im only trying to use it as a Audio battery.

Is 350 Cycles anygood?

WHat is the Main number I Should be looking for when trying to decide on these audio AGM batteries for durability and quality?

Thanks for the help guys

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I can't hear you!

Are you planning to play your system without the vehicle running?  Are you planning on ever totally discharging your battery?  You know, down to 10.5 or below?  If you are not planning on doing either, I really do not think this spec applies to you. 

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Because I was thinking of when you said a cycle being a discharge down to 10.5volts by the audio dragging the voltage down and that equalling a cycle (with car running). and that this wouldnt be too great of a battery with 350 cycles unless im able to keep the current up to 12 or so volts.

But you're NOT talking about a Bass note that could drive the voltage to 10.5volts, you're talking about actually having the battery discharged to 10.5volts by using it without having the alt to charge back up (car turned off).

Alright I think i have a better understanding of it now. Not completely figured out but definately more knowledgable then before. Thanks alot. Like you said i dont really need to be worried about the cycles then. because i wont be playing it with my car off.

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I can't hear you!

Well hopefully with the truck running and system at full listening volume, the voltage never drops that low...! I dont think that would constitute a cycle though...? Actually draining the battery to 10.5v and then recharging would...I get wanting to add a second battery...Whats the voltage dropping to with the"low bass note" currently...10.5v...? Adding a 2nd battery means the alternator now has to charge two batteries,instead of one. Also there is adding an Isolator ,if you are running two batteries. What kind of battery is under the hood now...Have you upgraded The Big 3 yet...? Im assuming that you are experiencing low voltage or lights dimming currently,and is why your leaning towards  adding a 2nd battery...!

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M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

No my voltage doesnt drop to 10.5v. It gets down to about a steady 12volts. Right now im running a kinetik 1200 under the hood but another 1200 one would not fit behind my backseat so I want to go with a HC800 (closest to its size that CAN fit behind my seat). Yes i've done the Big 3 and My voltage with car running and no music went from 13.5v to 14.28v. My lights Are dimming so i think i just have a sensitive electrical system and im trying to get it to maintain itself at 13v. And like you said I dont want to get a second battery thats tooLarge, because I dont want to put to big of a load on the alt. Personally i wouldnt mind going with the HC600. I know you we should go with the same EXACT battery but I'd rather spend 80 dollars next year than 1500$ trying to get a replacement for my alt. Because 2004+ Ford F150's Does not have a choice of Alt upgrades. They have specially designed for it to be the only alt that can fit unless that part of the engine is rebuilt.



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I can't hear you!

What size wires did you use for the big 3...? Its a factory alternator...? I think the problem is more that you need more current being introduced...As opposed to adding 2nd batteries...! Maybe just save the $ untill you can upgrade the alternator...?!

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M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

well if i save that will take about 2-3 years.. im working on a electrical engineering degree at UF. Tuition is serious since the championships... i need a steady current NOW. Before i blow another amp.

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I can't hear you!

As far as alternator upgrades...Have you checked out Ohio Generators...Well as long as you used the correct size Power Wires...Have a Ground that has been verified good w/ multi-meter and is also the correct size...I just dont think adding a 2nd battery is going to help... What size power and ground wire do you have...? What size wire did you use for the big 3 upgrade...? What size speaker wires from amp to sub box...? How long is your ground wire...? Just want to get a clearer picture here...! And maybe i missed what amp,subs,etc...!? Just for the hell of it ,please list where and what size you upgraded the factory wires to...?

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M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

Amps-
Hifonics BXI-2408D 200amp
Rockford Fosgate T3002 80amp

Subs-
3 Pioneer TS-W2501D2 wired to 1.3ohms (12 Gauge Wire)
4 Door Speakers (16 Gauge wire)

0 AWG for Big three.

0 AWG Power and Ground To Hifonics Amp (Ground 1.5ft)

4 AWG Power and Ground wire to Rockford Amp (Ground 1ft)

For now I just want a little reinforcement to keep the Voltage atleast about 12v. And So now im think about buying one of the Small kinetiks to use just for now. i'd rather have that and it help than have nothing and a amp burn out because of low voltage.

PS: and I just emailed OHIOgen.com and asked.

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I can't hear you!

Is the voltage dropping that low at the amp...or battery under hood...? I just dont see how adding a 2nd battery is going to help...but if thats what you want to do...please post results...!

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M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

The Voltage right now gets down to about 11.5 at the LOWEST. And thats at long notes (4-6sec) like it has to kind of work its way down. But i feel that thats not too good . I think I may have found a place that can either make or customize a 200amp alt for my truck for cheap. Im waiting on the email reply. And if he says yes then I wont worry about the Battery until I get that. But if not I will definately post the results.

Thanks for the Help!

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I can't hear you!