Battery conditioning.

[NRG]

Many ebike batteries have 18650 cells or similar, which are exactly the same as what's in you laptop. Who ever heard of conditioning laptop batteries?

Exactly, I did check the Panasonic and Sanyo web site about battery care and the PDFs I read made no mention of conditioning cycles, I may have been reading the wrong stuff though. Full capacity is reached without the need to perform full discharge / recharge cycles as I understand it and also IME.

 

[flecc]

Exactly, I did check the Panasonic and Sanyo web site about battery care and the PDFs I read made no mention of conditioning cycles, I may have been reading the wrong stuff though. Full capacity is reached without the need to perform full discharge / recharge cycles as I understand it and also IME.

Panasonic definitely advise the "conditioning" cycles on the battery supplied with their units, but as I posted earlier, for the meter's two functions to be zeroed. They also advice a repeat of that when the meter appears to drift over time. Members who have experienced meter capacity readout drift have successfully corrected it with a full discharge and recharge cycle.

The manufacturers who recommend these initial cycles are using larger capacity cells, typically of 5 or 10 Ah, and I agree that small cells like the 18650s used by BMZ in the Kalkhoff batteries definitely don't need any conditioning, though their meter might need the zeroing cycle.

 

[sal_park]

can anyone provide a link to a page that say 'condition lithium batterys because...' ?

 

[Old_Dave]

can anyone provide a link to a page that say 'condition lithium batterys because...' ?

http://www.lmgtfy.com/?q=condition lithium batterys because




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[mountainsport]

Let me google that for you




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Very CUTE Dave lots of kisses for that one.

Mountainsport.

 

[Scimitar]

Many ebike batteries have 18650 cells or similar, which are exactly the same as what's in you laptop. Who ever heard of conditioning laptop batteries?

I wonder how many laptop batteries die a premature death?

Answer - more than you'd expect.
I'm utterly bloody sure if the cells in laptop batteries were properly broken in there would be a longer life from them - that wouldn't suit the makers, though, would it?

 

[Wisper Bikes]

Advance who make many of the Wisper and eZee batteries also insist on the need for conditioning with two or three cycles of it. It may be related to the very high content density leading to the possibility of uneven charge content through a cell. We know that the BMS has the function of levelling out the content between cells, but there appears to be occasions when the BMS restarts that function as the cells settle, with some such as Wisper advising a 24 hour initial charge to allow that to happen. I think this latter need may well be due to individual cells not attaining a full charge on the first charge occasion, something which may be alleviated by exercising the cell contents with a full charge cycle from empty to full.

Hi Flecc, AE have not made our batteries for some years now. The new batteries we use in conjunction with our quite sophisticated chargers mean that a simple charge is acceptable, making certain of course the charger is set to the 42V full charge rather than the new winter conditioning 39V. The first charge may take longer than normal as the charger interrogates each cell and brings it to it's maximum charge so all 10 cells are bought up to the desired voltage.

All the best


David

 

[flecc]

Thanks for the update David, difficult to keep up with manufacturers changing battery suppliers as often as their socks!

 

[Wisper Bikes]

I don't know Flecc, I haven't changed my socks for nearly three years now!!