PINNED - Lithium battery conversion/info

[Burgerman]

Here you go this guy is REALLY trying! We charge to 3.6V.

https://www.youtube.com/watch?v=52h8IK0IdqI

This guy overcharged it, drastically, and then shot it with a crossbow! Twice. And then made the effort and lit it.


______________________________________________________
A lead battery gives off hydrogen and oxygen and can explode if overcharged. If you did this to a lead battery it would explode and throw acid everywhere. These are SAFER!

[Burgerman]

https://www.youtube.com/watch?v=bRY79xScvWU

And this retard has correctly figured out that the BMS is letting all his cells get out of balance, and has removed it... So now is charging with no form of balance at all, so the cells he has "saved" from the BMS will die of overcharge!!! No matter what he sets the dumb charger to.

Theres so many ignorant lithium cell users that all think they are experts EVERYWHERE!

Then read the comments below and you will see that ignorance reigns supreme! THIS is why we have BMS. To stop retards wrecking the cells. And to allow all these idiots to buy lithium packs to ruin.

Theres only the hobbyists, with proper balance chargers and a few of us on here that are doing it correctly.

[expresso]

i agree - alot of idiots - i have no clue really or had no - till i found this site really - many people dont even believe you if you tell them things that they know nothing of - but only know from others that are just as stupid - so i you tell them - you can do without a BMS - they thing your stupid and dont believe you -

a smart person would listen and then follow up on it and check it for themselves - do the research - if they did that - they would know better -

it took me a long time to get to this point - i been reading here for many years - but on and off and never gave it a real shot at actually thinking about doing it

it did sound very out there - too much for me - i didnt understand it - wasnt ready to spend so much on it - etc, - that all changed as i started to get stuck and i knew i needed to do something - i reached the end of the line for LEAD - the difference was i used the LEAD all the way each time i went out - during the summer - so i knew that was it - unless i did something - - and after i got stuck

that was it - which was last summer - shouldnt happen now -

[Burgerman]

Yes.

There are literally thousasnds of DIY leccy car/bike nuts out there. All filling each other full of missinformation, all destroying cells, catching fire, and spreading the same garbage/BMS/stupid info around. On endless forums, and at every EV battery experts site.

The truth is that done PROPERLY and monitored correctly a LiFe pack will outlive your chair, and give huge range gain and save you a lot of money.

And done with a too small pack, BMS, dumb charger, the exact opposite and maybe burn your house down and give Lithium a bad name.

The real problem, as usual, is that many people are not prepared to learn, and want it all NOW with no knowledge. Details MATTER here! They want what you have, but expect it all, without any learning or effort. They want easy dumb plug and play way. And that just doesent work. Even though there are a lot of battery companies that will sell you a pack...

[expresso]

yes - thats true and i have to say - that was me too - thats what i wanted also - i didnt want to get involved so much - but once i decided to do it and realized that i can do it with your help here and Scollard made the difference - now that i did it - i have to say besides the money - which was alot to start since i had nothing - i mean nothing -

but worth every penny to me now - i wont go back to Lead as long as i can keep doing what i did already - for me its a no brainer now - -

i know this one person - even if did everything for him - Paid - built it - installed it etc, - he still would be the same - still wont ride any different and wont appreciate it - - its nothing i can do for someone who dosnt care for it anyway -

if someone really did care - made the effort like i did - i will help that person -
its almost like Welfare - i dont mind helping - but cant help for ever - you have to help yourself at some point - make that effort for real - if you did and do - it will work

[Burgerman]

Well just like welfare, free $£ and free housing etc you simply cannot help some people.

There are people in the UK that won many millions on the lottery. Moved from council house, benefits, bought large expensive house. Wrecked it. Bought fancy cars, drove them around and around the gardens and wrecked gardens and cars. Now peniless, back on benefits, living in a council house. Already they have made it look like a rubbish tip, filthy, wallpaper all ripped off, clothes and food everywhere...

Heres another idiot. http://www.theguardian.com/uk/2005/jun/ ... me.lottery

https://www.youtube.com/watch?v=c4KPDCpH9sw worth watching. This is how the UK underclass live. This one wasted 10 million and is back in poverty.

[expresso]

thats everywhere - same here - stupid idiots - cant educate - -


goes back to Education - Family values - good and bad - and some you just cant help period -

[steves1977uk]

Well just like welfare, free $£ and free housing etc you simply cannot help some people.

There are people in the UK that won many millions on the lottery. Moved from council house, benefits, bought large expensive house. Wrecked it. Bought fancy cars, drove them around and around the gardens and wrecked gardens and cars. Now peniless, back on benefits, living in a council house. Already they have made it look like a rubbish tip, filthy, wallpaper all ripped off, clothes and food everywhere...

Heres another idiot. http://www.theguardian.com/uk/2005/jun/ ... me.lottery

https://www.youtube.com/watch?v=c4KPDCpH9sw worth watching. This is how the UK underclass live. This one wasted 10 million and is back in poverty.

I remember reading about this in the local paper round here as Swaffham isn't that far from me.

Another story on the same guy... http://www.dailymail.co.uk/news/article ... ckpot.html

Steve

[Burgerman]

Its not just him though. Thers about 10 percent of the population live like that. Watch the vid I posted!

[shirley_hkg]

Found these 40152 15Ah dated @ 10C .

Taiwan made .

New old stock .

[shirley_hkg]

Sweetest thing is just @ $8.00 USD

Bought 80 pieses for another Invacare GB .

Of course , in my old fashion way . . . . B M S . . . . with 20A . . 28.2V . . . dumb charger .

[gcebiker]

Any Left ?

[gcebiker]

My brother has been recycling LapTop batteries to make a Home Brew Powerwall 'HBPowerwall' ... i think he would love some of these.
https://twitter.com/hbpowerwall
http://www.getlinkyoutube.com/channel/U ... 6sVdEOIUbA

[shirley_hkg]

Any Left ?

There are plenty . I guess .

[gcebiker]

well link me up baby

[Burgerman]

Those look very like headway cells but are probably clones. Shame to ruin those with a stupid BMS...

[Burgerman]

My brother has been recycling LapTop batteries to make a Home Brew Powerwall 'HBPowerwall' ... i think he would love some of these.

Laptop cells = LiCo lithium ion. Then have short 500 cycle life, and burn... And with a typical BMS wont get close to 500.

LiFePO4 cells, dont burn, 2000 to 5000 cycles.

[expresso]

Sweetest thing is just @ $8.00 USD

Bought 80 pieses for another Invacare GB .

Of course , in my old fashion way . . . . B M S . . . . with 20A . . 28.2V . . . dumb charger .

nice - just curious now - why not stop using a BMS and get a PL 8 - PSU - just once and you can charge better - make them last longer etc, ?

i know you do well with your set up - ADD On and BMS etc, - but can be so much better - -

[shirley_hkg]

My first full pack , 10P8S 20A A123 pouch cells, are 4 years old now.

They are as good as where we started, that every charge ended with max voltage difference among 0.01X volts. Can't see why they won't survive another 4 years.

You see the price of cells I quote, that they are expendable.

We are not sending someone to the moon after all , are we?

[snaker]

Sweetest thing is just @ $8.00 USD

Bought 80 pieses for another Invacare GB .

Of course , in my old fashion way . . . . B M S . . . . with 20A . . 28.2V . . . dumb charger .

17Ah x 6 = 102Ah
$8 x 8 x 6 = $384

102Ah@24V costs $384

Am I missing something?

Shirley, I do not see its link. Can you re-post the link?

[Burgerman]

If the cells are any good, new, last well, thats an excellent price.

old stock

How old? Allowed to discharge?

BMS... Dont forget to include the cost of replacing the cells once ruined, a lower voltage charger, master electrcian and a fire extinguisher! viewtopic.php?f=6&t=4460&start=40#p84092

[steves1977uk]

Attached is the spec sheet for those Goodwolfe Cells. Might be tempted to build a pack out of these. Don't know where you can buy them though.

Steve

[Burgerman]

They are same spec as headway 15Ah cells. Remember though that the cheap ones are old. May have been stored badly or allowed to discharge fully over time. You may get exactly what you pay for.

[Burgerman]

My brother has been recycling LapTop batteries to make a Home Brew Powerwall 'HBPowerwall' ... i think he would love some of these.
https://twitter.com/hbpowerwall

Wasting his time. Laptop batteries are down by about a third capacity in a year. By the time they are recycled they are junk. Charging them by solar will waste much of the power as heat as they get less efficient over time. And he will spend much of his time trying to chase down the latest dead cells...

Old mixed cells, lithium ion that explodes and burns, and a bms... I really hope thats not inside the house!

[Irving]

Attached is the spec sheet for those Goodwolfe Cells. Might be tempted to build a pack out of these. Don't know where you can buy them though.

Steve

Goodwolfe were a UK battery & EV systems distributor based in Southampton who moved into developing their own cell & BMS design & manufacture facility. As of 2014 they were acquired by the Vayon Group based in Northamptonshire and, with other acquisitions, became Vayon Energy Systems.

"Vayon Energy Storage is also experienced in developing on-board and off-board battery charging solutions to meet customer’s specific requirements for AC or DC charging, utilising the latest charging protocols.

VES is also in the process of setting up a UK facility for the production of lithium ion batteries for niche volume applications. This facility will produce batteries designed and developed by Vayon, but will also operate as a ‘build-to-print’ facility, assembling batteries to customers own designs. This will increase the build capacity of VES from 1000 battery systems per year to 10,000 per year by 2018.

In 2014, Goodwolfe Energy and Ashwoods Energy were acquired by Vayon group and these were joined by a team from RDVS at the end of 2015 to form a new business, Vayon Energy Systems.

Examples of some of the key programmes delivered to-date include 450 lithium ion battery systems for the Foxhound military vehicle programme, 500 high-power off-board charging systems for a supercar programme and 420 lithium ion battery systems for a hybrid commercial vehicle programme."

I put a call in to them today with my 'major spinal charity disability engineering research' hat on, someone's calling me back tomorrow... I'll let you know if there's any mileage in it...

[steves1977uk]

Thanks Irving Be interesting to see if you can get those cells from them.

Steve

[shirley_hkg]

Cells are made in Taiwan, and may be even better than Headway.

The battery is made for a French robotics company . The 100A BMS is well designed.

May be too sophisticated, the entire lot was returned, and ended in the hands of recycle sellers.

They are unused, rated @15Ah 10C , and actual tests show 17Ah capacity.

[shirley_hkg]

He claims that the voltage drops to 11.5 V only, compared to 7.5 V of lead , in starting a 1.8L engine on a 3P4S pack .

That would be a super vigorous cell.

[Burgerman]

To be fair most lead are crap!

Those are exactly the same look, design, size, and specification as headway. Seems very strange that they could be made elsewhere? I mean identical! Apart from colour of shrink film.

[shirley_hkg]

Where is Headway made ?