dasfriek77

I know i didnt open them and they were sold to me around Christmas from Batteryhookup. They were to be used for a project i was helping someone build, But he swapped his Headway cells to me for LifePo4 prismatic cells. Ive never gotten a bad cell before and they had to see it wasn't right. But every time i order Headway cells i always get 2 extra for occasions like this. I better not find any cells like this in My Headway 96aH battery already in my car. But im going to inspect it.

2017 wasnt a good year for Headway cells. I had 2 unopened box’s of headway cells for sell/upgrade with, These 2 were in that batch so i had to inspect every cell i had. I did notice an odd smell in my bench test area, It smelled like a musty electrical smell. I will be double checking my 96AH headway build thats installed in my car. Doesnt say much for cell life.

I found the maker of the 20 spot headway build that Parker used in the pic. https://www.coventrycaraudio.com/product-page/headway-lithium-battery-bus-bars Sadly id have to sell the LTO build at a good loss to be able to buy a 200ah set of bars. But another set of jims non polished 96aH basic bars is only $160 which i can afford. So ill be thinking and see what the new system may need power wise. Thank you for all your help! Das

Altho i agree with you,i find it hard to make any rash decisions as i want to keep my LTO build. Others agreed that 6S is fine at 14.4V and worse off as 5S is facing a .4v overcharge which isnt acceptable. https://www.caraudio.com/threads/lithium-lto-batts-ho-alt.610440/ I gotta admit its not a decision i make lightly, But everyone in that thread said my 14.4V is fine as 6S x2 banks. and facing danger to my systems health isn't worth it. I know they wont explode, But premature death in a way is just as bad. Thanks for the info tho as i know i wont forget it.

Still in reading form and making sense as best i can.

Dang it,ive seen that before on DFS’d website. i can rearange them to 5 cells in series and get 14V But over charging them .4v Im so glad you pointed that out as i forgot just what they need. one option is to sell them,i have alot invested in my 2 banks of 6 of the XP Power cells so its 12 total. a second option i saw online. Here is a pic i stole from “Parker the Basshead” you see a total of 20x4 cells all connected. Id guess its possible to hit 20+ volts. But as you see in the pics hes only connecting in the middle. Right about the 14v-16v spot. Very smart move for a guy like that who needs tons of extra amps. I have 48 headway cells in the car now. I have another 100 cells in boxs just waiting to be used. I could call jim’s machine works to make one set of bussbars with 20 x4 like Parkers, Or just get two sets of 96ah and make that would make 288aH you know any other options where i can use the LTO and keep them? ill never have the income or ability to buy more LTO cells. So i got to work with what i have on hand.

Still in reading form and making sense as best i can. 14.6v charged on the 96aH max voltage 3.65v each cell 16.8v LTO max charge at 2.8v 14.6v on the Prismatic bricks at 3.65V on each cell. Which are the same specs as headway cells. only the LTO can be charged higher, But nothing is being overcharged. I guess i could take 2 cells off the LTO banks at get 14v with 5 cells in series. But it then would be too close to overcharging than id like. I wish i could buy more LTO cells, Most expensive cells to buy. But well worth the costs. Ive not seen my cars alternator charge anything above 14.4v but seeing how amps like this voltage. BTW my old setup which was 2 AGM batteries and even then it would charge 14.4 volts from the factory. Im not going to install that 100ah prismatic bricks ive been bench testing with unless its needed. As before i said the prismatic bricks are the same chemistry and specs as the headway cells. My plan was a second headway cell build at 128aH but im thinking that just to much of a gap going from the LTO at 80aH and my headway build thats 96aH to then add 128aH is to much. I have about 100 more headway cells in box’s i have just sitting here. And they are going up in price so im guessing Batteryhookup is starting to run low on stock to raise their price. BTW Project DP bussbars is almost a scam as ive been waiting on my 128aH highly polished buss bars for 3 months now and its been 2 months since he last answered and email or diect message threw his web site.

Trust me its my thinking just doesnt reach my fingers in the correct order, This isnt my first time to be asked to try and make posts easier to follow. Its no medical issue,its just how i am. Ill retype that post I have bluetooth battery monitors. I also use balancers on my builds also. Its called a “Battery monitor” or BM6 on Amazon. That monitor would let me know with low voltage on a going bad cell. My car is completly running On lithium batteries. My alternator is the stock 180amp output. I have 2 battery builds in the trunk. My LTO is 12 cells and 80aH capacity. The second battery is a headway cell build with 48 cells in it. I have a third 100aH battery made with 4 prismatic cells ready to go in. But after i finish the rebuild of my system ill see if i need to add another lithium battery. I doubt i do need it. So im running 2 batteries in the car for a total of 176aH, but could go as high as 276aH if i need the 3rd battery. i counted the cells in “Parker the basshead” on youtube is running an 80cell headway build, i dont know the exact aH on his,but you can see how his build is around 20+ volts and he connects his amps in the middle where its most likely 16volts. During my bench test of 100aH 4 prismatic cell battery and my SALT4 and SALT 1700.5 and the Salt 4 was powering my Sundown Z V6 15” and my voltage would drop -.1V and was the most stable voltage ive ever experienced, I had my charger/power supply on it and the biggest amp draw was usually 6amps was all it was feeding the battery. added info is my SALT4 has a messed up 5th channel that should 1200 watts rms. Id bet its more around 100 watts. IM going to look at it on my oscilloscope and see more info before i send it back under warranty. Hopefully this round was better,if something you want to know or explain better just ask thank you Das

I think my bluetooth battery Monitors my cells have should pic up on dead cells. I built every battery myself so i know them rather well. they are BM6 on Amazon,and rather inexpensive. But yeh i think the 0V caps fooled every charger until i got the 2 supercap banks Maxwell’s. FINALY AN ANSWER TO MY SUPERCAP QUESTIONS!!!! Thank you so much for this info! ill place the caps before my first battery i have hooked to my cars lithium cells but ill decide if my cars needs a differant hook up soon. atm i just have my 2x banks of 6 LTO build for 80aH and 96aH Headway cells seem to play well together so far. Thats those two batteries and ioxus supercap. My alternator is a 180A stock one that’s it, But its dead set at 14.5 - 14.4 and charges everything to that and cranks so well it works great with these 2 batteries. My bench tests last night was partialy to test the caps and the 100aH prismatic cells. And they passed with flying colors. Lets just say the 2 SALT amps do with the prismatic battery and caps so well it held the voltage +- .1v fluctuations was the most the battery moved. Yeah thats my SALT4 also pushing my sundown 15” Z v6 and it shook my whole 2 story house. With the GATELY 15” box thats a work of art. And Thanks to SM for his parts and info by testing and designing. My trunk is the original spot for the stock battery, Chrysler useed a good and thick 0guage wires on both the posative and negative. I added another ground at the spot where the OG battery goes. Useing fiber optic line to my DSP from the HU and i have no engine feedback. So my last tests will see if i need that 3rd battery or not. Im pretty sure the differance in cell compatability shouldnt go more than 20aH cell capacities. im at 80aH LTO, AND 96aH headway cells and if i need the 3rd which i doubt ill need is a 100aH prismatic build. Last nights tests proved to me the prismatic cells i got were upto headway specs, And it didnt have Any issue keeping my amps happy.

Thank you for the help. But yeh each single cell and especially a bank of them was like shorting my chargers out. I have a power supply that was perfect to give a charge at low voltage and got the singles to take a small charge. As to my issue my multimeter’s battery was shot and i tried it out on my pocket O-scope and saw they would take voltage in short burst as the caps were pulling every amp i could feed it. At 10v i hooked it up to one of my test bench lithium battery. As to why the chargers were failing for so long. So i hooked my 100aH battery up to my big 120amp charger and then connected that battery to the supercaps it still was pulling heavy amps. But i use 0 Gauge for everthing so at that point nothing got warm even. after i charged everything i got it too 14.4V same as what my car puts out and im letting it sit and back under the Balancer. 1 more question if you dont mind, i have an Ioxus supercap that droppnhrtz sells for $100 and now this 2 banks of Maxwell supercaps but where down the lithium battery line do i place the caps? I swear i heard or read that the caps should be at end of the line of the batteries. And buy as many supercaps if possible. I have 276aH of battery power, 80aH LTO 2x banks, then a 96aH headway build and lastly a prismatic 100aH sized. the end of the line makes it easy on the supercaps and more battery wear. But electricity moves fast so it would be able to take the strain of my battery cells. If its first it puts the strain on the supercaps before it ever reaches the batteries. so i have 3 Lithium batteries and 2 supercaps including the ioxus.

About a month ago i got a Maxwell 2 banks worth which is 12. Ill be honest i dont know who even sent them. But i tried to charge them and it kept shutting my chargers down immediately. yes positive to positive and grounded correctly I have tried everything right down to tring to charge each cell individually. Ideas? I have $600 worth of paperwaits. sell the on ebay as dead for $15 a piece? Getting them working would be better.

So do you feel the differance in cell/battery aH enough to cause an issue. 80aH,96aH,128aH and all those super caps to find where they fit in and what order. i could see 230aH i have here i wont mix those.

Ive run into a black hole,not many have answers for this. When i do my battery delete ill remove the 2x AGM back there. Then its the lithium game for me. what i dont know is how batteries, Super-caps should be arranged. ive heard use as much capacitance as possible, the Ioxus supercpap i was told it should go in parrallel. The main thing he said was put your strongest caps at the end. That would be my 12-pack of giant Maxwell 3000Fx12 So what order would you run the lithium banks and placement of the caps?t a minamum gonna run 2x supercaps and 300aH-400aH on the batteries. Amount of batteries is only limited by space. My choice of cells: 128aH headway build 80aH LTO 96aH headway or 230 prismatic cells Room dependent. How many batteries is too Extra info. My altenator is holding fine with 2 AGM but my voltage does sag a good bit 14.4v drops too 13.8 My alternator is even handling for what it is. Ill only upgrade that if i see danger or not.