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Raptorman

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Posts posted by Raptorman

  2. Lithium battery questions

    in XS Power Batteries / Chargers! (and other stuff too)

    Posted

    3 minutes ago, Ninja_v1.0 said:

    Thanks for the input.. i still have a lot of research to do.. another thing i consider is the temperature.. here where im at it gets cold.. like 0.. a buddie of mine who has a few lithium's couldn't even play his car because it was too cold with the lithium's.. well thanks for the insite.  looks like i have much more learning to do

     

    :ninja:

     

    They will work in cold temperatures but prefer higher temperatures. The cells used in the JY's perform best around the 120*F range. As you draw current through the battery it will warm the cells up and will perform better. This is observed in my 2:00 bassline during the recharge tests where in the beginning I am dropping to 12.3 lowest and by the end of the 2:00 it's CLIMBED up to the 12.8 area.

  3. Lithium battery questions

    in XS Power Batteries / Chargers! (and other stuff too)

    Posted

    Yeah there is a lot of hearsay and misinformation in the lithium and battery game in general, hell just car audio as a whole. Lol.

    If it means anything to you, the alternator setup in my video is a Singer 300 and a stock Alt. So about 390A of revved output on tap. And about 260A of idle output on tap. And you see how little it was actually drawing. Alternators weren't being killed. That is after 2:00 of a sustained bassline dropping the battery into the low-mid 12's.

    The people I have seen say lithium killed their alts are the people who have ran XS Power... And coincidentally I have seen lots of cases of XS Power lithium batteries miserably failing to perform and dropping voltage bad. Which of course would cause the alternators to work harder. Food for thought. 

    • Like (+1 Rep) 1

  4. Lithium battery questions

    in XS Power Batteries / Chargers! (and other stuff too)

    Posted

    13 minutes ago, zoeboi954 said:

    From the video I saw on YouTube jy wasn’t able to keep up with the limitless, but who knows how well those batteries were charged up prior to test.

    And that's another point. The JY's are shipped at 30% SOC. So they will take a while to charge up. No telling what SOC it was at before the test. I charged mine up on a charger before I even put it in my truck.

     

     

    1 hour ago, Ninja_v1.0 said:

    I'm assuming that you have the alt to back the lithium because from what I have heard and discussed with others, if you do not then your alt is going to have a bad day.

    Also another point is that you will want a AGM in front of the lithium back due to the low resistance of the lithium and the high charge acceptance having the alt to see close to a dead short causing the alt to go ball out until the battery charges back up.

     

    I hope some people who are only able to have a single alt in situations like mine, think about everything before they jump into the lithium boat.  Maybe @Raptorman could chime in on what I said to clarify if what I am saying is true or not as he seems to know quite a lot about the subject?

     

    :ninja:

     

     

    They really aren't any harder on an alt than an AGM is. If anything, AGM is harder on alternators than lithium, since AGM really starts to kick in around 11.8V-12.0V, and even more so around 11.0V. Lithium will start to kick in around high 12's/low 13's. The system draws from the alternator first. Battery carries the remaining weight. And while there is no draw they don't draw a whole lot. If you look at the recharge tests in my video you will see the current being put into each battery and it will taper off as IR/SOC increases.

    Jump to 12:26 and watch current vs voltage.
     

     

  6. Lithium battery questions

    in XS Power Batteries / Chargers! (and other stuff too)

    Posted · Edited by Raptorman

    18 hours ago, zoeboi954 said:

    1st questions i plan on running 12k rms  and i noticed that the XS15k and XS30k are the max rating and the continuous are half the max. So does that mean i would have to get a XS30k for my 12k rms system or will the XS15K be good enough. And what the difference between the spl version and non spl 

    2nd question I started to look at some post about them and I noticed someone said that they were informed by XS Power that the battery perform best at 11.8v. Is this true?  This information kinda threw me off because I don't like going below 12v. That makes wonder where the the 16v version perform best at. 

    3rd questions how will they handle mixing with agm batteries? I currently have 2 xs power battery a D5100r and a D2400. And I also will be buying a charger. I was going to buy a XS Power PSC15 but I also noticed XS have lithium chargers. Can i charge them all together or separate or delete the agm batteries? Will it matter if I used the PSC15 for the lithium battery, or is it a must that i get a lithium charger?

    4th question be honest with me, do you guys really think it's worth getting lithium battery. And do you think the other companies lithium battery like jy or limitless are good?

    5th question is not a lithium question, just don't feel like making another post for this simple question. But my D2400 crack on the side and leaked from it. I removed it and put my voltmeter on it read 12.6v and it did well on a load test. So I just put glue on the crack and put back in the car. Should I be worried about it. I've had that battery since 2011

    1. Depends on alternators, amplifiers and ohm load the amplifiers will be wired to.

    2. Yes just like AGM they will increase in amperage output as voltage drops. But they start discharging from the ~14v range versus the mid 12 range like AGM, so they have the potential to hold high 12's/low 13's for a lot of people.

    3. They will be fine to mix. The AGM's resting at a lower voltage will draw from the lithium, which is OK. Lithium prefers to be stored at lower SOC, contrary to AGM which basically higher = better. Any charger will suffice really.

    4. Lithium is extremely worth it, and is actually the cheapest option (by a good margin) if you can afford the higher up-front cost. But with JY releasing their 8.55AH single module 12v cells in a few months at roughly $240 shipped each it will make it easier for people to break into the lithium market. People seem to be happy with JY and Limitless. Limitless does have some con's though. The non-modular design makes it impossible to switch to/from 12/16v without replacing the entire battery. The JY's you will only need to add/take away one cell. Limitless doesn't have passive cell balancing either. There is a .5A draw in each JY module that will bleed current until a certain voltage set-point. This indirectly balances all cells with each other without manually balancing them or using a BMS.


    Also a sidenote, not a single cell has failed since JY's inception. Have heard of numerous cases with people having issues with their XS batteries or being very let down by the performance. Scottie seemed super interested in sending me a lithium to include in my testing until I posted the Winston Vs JY video.... Odd.

    • Like (+1 Rep) 1

  10. Random Picture Post V2

    in Off Topic - Random, Misc posts - the forum "Junk Drawer"

    Posted

    I'll leave this here.

    i really dont see what his trying to do..

    comparing a 7k amp to a 5k amp and wired differently with different subs that might respond to impedance rise very differently

    Wasn't the point. Was just showing the differences, since most people don't want to believe they do power.

    Oh, and the subs were the same. Notice the rise is almost exactly the same (3x) for both.

    inb4: how do you wire like that

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