request for balance charging litium ions cells in tbe

[Chris93]

Hi there i am looking for someone in the netherlands who has this charger:

SkyRC D400 AC/DC lader LiPo 1-7S 20A 2x200W

SkyRC D400 AC/DC lader LiPo 1-7S 20A 2x200WSKYRC D400 is a twin-channel charger with two independent circuits which can charge two different kinds of batteries simultaneously. It also supports power distribution in AC mode to get max charging power to shorten charging time.400W total PowerThe t

www.gearrc.com

and i can visit and bring my ebike battery and slowly balance charge the 7litium ion cells to its peak with the balance port and after that in the future when i want to balance the cells i can come to you and balance the cells.

at a small fee of course.
is there anyone who wants to help me?

 

[fabbrisd]

I will "try" to help - you are looking to "balance" your eBike battery - have you already tested the status of your eBike battery - or do you have battery performance issues now that lead you to believe your battery (cells) need to be balanced - which is it ?

Putting different "chemistry" between LiPo and LiOn aside - a RC battery balancer is often capped at 7S - whrer for eBike batteries a 36V eBike LiOn will be 10S - 48V 13S - 52V 14S - 60V 16S - 72V 20S.

You will need a Active Balancer that can "blance" your eBike battery s-Config.

To get you pointed in a more effective direction - this eBike/battery guy has a good video on how he developed his direction:

CLICK HERE YOU TUBE EBIKE BATTERY DIAGNOSIS & BALANCING

 

[Chris93]

Ahh cool its the first one ths cells them self are safe but they are not at the same level of voltage wich results in a tripping bms when one of the 7cells is empty

But i checked the pack its a simple 29v ish e bike ane in the adventure ah xt 10
I know its a old bike but the batt cells itself has a 7s balance socket and the cells are 18500 cells

someone before me swapped what i believe the nimh pack for these cells

but the socket has 7white wires and 1black wich means a 7cell pack right?

 

[fabbrisd]

If the socket/harness shows 1+7 it is 7S. -I would suggest you do a search for a 7S active LiOn battery blancer (board) - a active balancer proceesses transfers from highest to lowest cell - you do NOT need high amp rating for ta eBike LiON blancer - like 12 amp is fine.. Here in the U.S. like Amazon USD$15 . aliexpress is like USD#11 - pic shon is a Neely board - same board is often sold non-brand asNeey makes more expensive "intelligent" boxes now - and frankly yopu don't need that either

 

[fabbrisd]

Sorry - mistyped a lot - you just need 1.2A - not 12A

 

[Chris93]

All good and no need to be sorry
Is this board a auto balancer?
Like plug the white scoket in the white board wait a bit and then your good?

also can you get a board like 17s and only use 7s and future proof yourself?
(is the board not locked to a exact amount?)

sorry for al these questions i love to learn

 

[fabbrisd]

1. "Future Proofing" is not guarenteed - as you have been able to open your battery - and have access to the flat multi-wire connector linked to the cell packs - right ? That's how you identified your battery is 7S.
Most" eBike batteries today CAN'T BE USER OPENED as "most" eBike Battery Case Designs are sealed.
That's one big hill - as "most" of my eBike batteries and eScooter batteries are non-accessible unless I am OK with "breaking the cae open"

2. Going "Board Type" is best to have your board match the battery you are balancing - these are the USD$15-USD$40 solutions such as Neey (and rebranded or nonbranded Neey)

3. If you want to go TechHead - then you move up to a Bluetooth controlable "boxed board" - there are guys that get real/real exciting chasing their Microvolts - and yes at this price level and Blutooth control you can use the higher-S ability on Less-S eBike batteries - like USD$140 up thru USD$300 - most of this goes to have higher Amp capacity as well

 

[Chris93]

Thanks for all the info and answers
sometimes ladyluck can be in your favor i did not know that most of the batt cases are seal shut/propriatary

Well for now i keep it at a simple level board i just ordered the 7s active balancer

Your the best