Graphene Lipo's pack

[Ariane]

Hi guys,

Like to know what you think about Graphene Lipo's pack on ebike concerning safety and power

Thank you
Ariane

 

[Syonyk]

"Still LiPo, still junk if you care about safety or longevity."

 

[wesnewell]

I've been using regular rc lipo for over 5 years. I've got over 4 years and ~15K miles on my current 24s 10ah rc lipo pack. Bought a couple of replacement packs a while back for $180 each when they were on sale and haven't used either yet. If I needed a new pack I'd give graphene a try if the cost wasn't a lot higher. But I've been more than satisfied with the regular stuff.

 

[Ykick]

I can’t see any clear advantage to Graphene for eBike battery packs. I think it’s mostly a marketing hype “flavor of the moment” that perhaps some RC users may find advantageous but for relatively low power requirements, I wouldn’t bother.

My criteria for buying RC Lipo for many years is that I want the freshest batch available.

How can someone tell how fresh they are? No sure thing but I frequently browse and study inventory while looking for stuff which seems to be large volume sellers. Frequently out of stock and grab ‘em when they’re back in stock.

I also steer clear of weird cell counts and capacities along with Nano-this and Graphene-that.

Turnigy 20C 5Ah packs have worked the best and longest for me. I tried Zippy's over the years but the PVC wire sucks and I've suffered higher failure rates using those.

 

[liveforphysics]

If your application requires maximum power density, its the king. If your cell QC dice rolls are lucky, it can last many years of service with excellent performance.

If your bike is a fast play toy, RC cells are definitely made for powering brutally fast toys.

If your bike is a commuter appliance, I would use a cell designed for appliances.

 

[Ariane]

Hi Guys,

Thanks you all for the information I don't know how to qualify a 60 mph ebike and up, for now I didn't buy any battery pack, currently I use 83 Volt 20 Amps pack (20S 8P) made with IMR-26700A cells, this pack will be good for next summer (I think) but I need to find a solution for the years to comes, good day!

Ariane

 

[bj001]

If your application requires maximum power density, its the king. If your cell QC dice rolls are lucky, it can last many years of service with excellent performance.

If your bike is a fast play toy, RC cells are definitely made for powering brutally fast toys.

If your bike is a commuter appliance, I would use a cell designed for appliances.

Are there any tests that we can use to identify borderline cells?

off the cuff...
Would thermal images of a cell under maximum load show any useful information?
ie to try identify areas of the cell under higher thermal stress?

 

[maydaverave]

I have been using the turnigy graphene battery as a starter battery on an old 1979 motorcycle with a finicky charging system i have been slowly upgrading. It's a cafe bike with no room for lead acid. Its killed every lithium battery I've put on it but the graphene one. I can only compare it to other lipo batteries in the area of abuse but i can confidently say the graphene battery can survive abuse that destroys other lipo.