Battery - mega deal or total ballkocks

[KirstinS]

https://www.ebay.co.uk/itm/262608328914

4200mah Panasonic cells ??

Do they make those even? I thought they topped out around the 3600 mark ?

I've asked the seller a few questions.....

Not to mention 7s being 36v ?!?

 

[soundwave]

http://www.bga-reworking.co.uk/e-bike-batteries/panasonic-ncr18650b-3400mah-li-ion-battery-flat-top-unprotected.html

i have 4 for my power pack light there 3400ma and i doubt its those cells as price just dont add up.

 

[anotherkiwi]

100% positive feedback as a buyer not a seller

Yes I feel the danger too.

 

[signwave]

I imagine that 'Refurb Ready' and 'Remanufacture Ready' mean these batteries are are past their useful life and need refurbishment before further use.

 

[danielrlee]

Total bo!!ocks I'm afraid.

The highest capacity 18650 cell at this moment in time is the Panasonic NCR18650G at 3600mAh.

 

[soundwave]

where do they sell those ?

 

[danielrlee]

I don't know of any sources of new cells I'm afraid. Word on the street is that they're very difficult to get hold of since Tesla take almost all that Panasonic can produce. Salvaged 90kWh Tesla packs are the most readily available source that I am aware of.

 

[soundwave]

i cant find any anywhere, o well just have to stick with 2nd best

 

[danielrlee]

'Best' is a very subjective term when it comes to batteries, since capacity and discharge rate are nearly always opposing properties. Higher capacity cells have limited discharge rates unless you start to parallel them into larger groups.

 

[soundwave]

5hrs on full blast will do me for my light

 

[danielrlee]

Use in a light is unlikely to demand even 1C from a cell, so you'd be good to use the highest capacity you can get your hands on.

 

[soundwave]

thats what insat said and eddie thinks his pack will out perform mine haha

 

[Deleted member 4366]

Re-manufacture ready implies that they're scrap and it's up to you what cells you put in it. They're 40 cell cases for 10S4P at 36v, though it says 20S9P, which would be 72v and approx 27Ah. That would be some battery!

Whoever is selling them hasn't a clue what they're talking about. The advert is all mixed up. None of it makes sense.

 

[anotherkiwi]

That makes for one very expensive battery case, bmsbattery sells empty cases for $35-$37 and a bms $29 brand new...