ebike tired battery goes NEW - NOT clickbait - real

[batteryGOLD]

Hi all I have news for most ebikers.

Is your battery tired old, or at a low capacity stage?
Don't worry. I have some solution that could fit some. (similar to some marketing slogan)

Aging battery is normal dont worry,good cells keep a lot of energy for ages more that 10years!
But very used cells need some help to spit all that power!

Here are some of tha GOLD instructions:

Example: for a tired 10S3P 42V ebike battery or others

-pick up 10 new genuine very good quality brand 18650 cells
-Do a serial 10S array pack 42V for this new cells, or 20cells 10S2P to get even more boost.

-Charge ebike battery to 42V , charge this block 10S1P or 10S2P up to 42V for same voltage (VERY IMPORTANT SAME VOLTAGE AT PAIR CONNECTING MOMENT)
-Pair ebike battery with this 10S block with good cable & connections. I like 12AWG and XT60 plugs nice stuff useful

-Connect this new system pair to your ebike

-Get in love with your revived ebike boosted

-Say woww

 

[amberwolf]

Sorry to tell you this, but none of this is news on this site.

I think you might want to read around here a bit.


One disadvantage to this system is that the old battery, that has much less capacity and capability now than it used to, is now extra weight and volume on the bike, which you may not be able to spare.

 

[batteryGOLD]

If you dont want extra outside block (for most this will be a disadvantage because volume and more weight added to ebike (10cells extra for 10S will be arround 500grams extra). I agree, but at most cases you could have a lot more Km's range and boosted acceleration because more power drain supply with just few bucks investment at cells )

If you want to keep same volume & weight dont worry, I still have a solution.

But for this solution you will need to go inside battery replacing some tired cells by new ones, be careful.

For example: For a tired battery 42V 10S3P or others

-Open your tired battery, identify the serial and parallel blocks, remove one tired cell from each 3P block of 10S.
-You have to remove 10 tired cells and replace those by new ones 18650 with very good quality and high current. (MAKE SURE NEW CELLS ARE AT SAME VOLTAGE of the ones at same block to do join / pairing)
-Your battery will keep same structure, but with inside combination of 10S2P tired cells parallel with 10S1P new good quality brand cells.
-Soo now you have a much powerful battery, more range, more acceleration, possible more speed.
-The new cells will make the tired cells become great again.

-For those that want extra speed add extra battery block, example if you have a 10S 42V battery add extra block to make it 11S 46,2V for more speed keeping same controller and electronics


Let's make those tired batteries great again!

 

[batteryGOLD]

Here is some explain how this parallel reuse concept works

"According to study & experiments the old tired cells are limited by natural aging processes and dendrites inside, blocking current flow inside cell due to high internal resistance. When U apply load to tired cell, voltage drop is large, soo cell quick reaches cut off point of 3,6V or 3,3V (direct to low useful capacity results obtained)

When you pair old and new cells, the new cell will be dominant & lock same voltage at both cells parallel. The new one cell will get most of the current while being dominant at voltage for this 2P system.

Soo this paired system will have much less voltage drop, increasing significantly the final capacity. and lowering a lot the internal resistance of the system. "(Ah capacity of the) whole is greater than the sum of its parts"

At some cases, one new cell plus one used tired cell paired parallel is almost same has having two new cells depending at load."

 

[batteryGOLD]

For those that don't like my reuse concepts I still have solution for you all
Maybe You are a type of person that like NEW & branded high quality stuff and tech lovers
Soo pick up some cash and get ready to DO tha crazy sh*t

-For example if you have a 42V 10S3P 30cells ebike battery

-release cash for x30 units SONY VTC5A cells NEW GENUINE from trusted seller.
-Open your ebike battery , remove all 30 tired crappy cells, replace all those for this SONY VTC5A , try to convince urself to forget all other cells at market
-DO VERY GOOD CONTACTS, SPOT SOLDERING and very good cables/connectors. If possible do parallel cabling at all ebike power wires from battery to controller to motor. Dual cable equals half wire resistance for same length

-Enjoy your new ebike, much more acceleration/torque, more range Km's , less heat, lasts forever.

-ReUse remaining 30 old crappy cells to do experiments and possible some explosions.

 

[Sunder]

The problem with what you're describing is that the new cells will reach end of life much quicker, so you're really robbing Peter to pay Paul.

What happens is that when you demand a decent load, say 30A. If you had 3P of matched cells, each cell will provide 10A. All good.

When you pair up old cells with new ones, the load is split inversely according to the internal resistance. So the new cell will have to carry most the load (as intended), and the old cells get a relief, so in a 3P string, the new cell might be carrying 20A, while the two older cells are only carrying 5A each. If your new cells weren't designed to do 20A, then you will already be shortening its life.

But that's not all - What happens when you release the throttle? The new cell has depleted a significant chunk of its capacity, but the old cells have not. So when there is no load, the older cells have more energy left in them than the new cell, and therefore will have a higher resting voltage - Since these cells are locked in voltage, that has to equalise.

So suddenly, during throttle off power goes from the old cell and rush into the new cell. In a 3P setup, where only one Parallel String is new, that's not an issue, we're usually talking 10ths of volts, and with double digit mOhm internal resistance, it will rebalance after a few minutes. With a 10P string, only one new? You could be "Recharging" the new cell much faster than the manufacturer's spec.

I am not criticising your advice. It is a valid way of refreshing batteries, especially when funds are tight. I've done it a couple times in the last decade. But I think your readers need to know there are risks and disadvantages to doing this, and it's not new and it's not magic.

Thanks for posting and reminding newbies this can be done though.