450 Wh/kg SolidEnergy batteries, the lightest rechargeable cell in the world?

We've seen the claims before, 10x, 5x, 3x the energy density for some new wondrous cells.

Panasonic 18650GA cells have a gravimetric density of 224 Wh/kg allowing some fixed wing drones to achieve 2+ hours of flight, these new SES cells claim 400-500 Wh/kg and are apparently available for sale now.

Could we see a 1 hour multirotor flight as normal soon?



Views: 2902

Comment by Tommy Larsen on January 30, 2018 at 1:20am

Another supplier that cannot deliver ? Just like these guys: https://oxisenergy.com/

Comment by Guy Tzoler on January 30, 2018 at 3:00am

don't forget these guys:


Comment by Nikola Rabchevsky on January 30, 2018 at 1:19pm

No prices.  No way to buy a finished pack.  DIYDrones needs an editor with some posting standards.

Comment by jlcortex on January 30, 2018 at 3:25pm

This seems similar to a Spanish company called Grafphenano. The company announced batteries of 1000Wh / kg based on Graphene. Now they are condemned for fraud.

The funny thing is that these projects are very profitable, more profitable as less technically possible, because when you do not have to take into account the technical feasibility then you can come up with really amazing things.

Comment by Greg Fletcher on January 30, 2018 at 10:34pm

Probably real good for a efficient long endurance fixed wing, but not so much for a copter. While the energy density doubles, the maximum C rating is one fifth of the best copter batteries, only 2C. You would still be pushing C limits, but my 650 quad could go well over an hour with these cells, 4s10p. If it didn't go that long then the bat is to small and exceeds C limits. Interesting.

Comment by Dale Greer on February 1, 2018 at 10:51pm

The Hermes spec sheet says they are 10C.

Each cell is 3.4 Ah at 3.8 V. So, if I make an 11.4 V battery out of three cells, will that still be 3.4 Ah, or is it 10.2 Ah?

Comment by Graham Dyer on February 1, 2018 at 11:17pm

= 11.4V, 3.4Ah. To get more capacity you'll need to parallel cells.

Comment by Graham Dyer on February 1, 2018 at 11:21pm

3.8V cells, 4.3V fully charged, just like DJI PH3, Mavic, etc. Wonder when these will go into the next commercial drone, DJI must be looking at them very carefully! And perhaps a bit of salivating...

Is a 1 hour Phantom 5 / Pro nearly here?

Comment by Amit on February 6, 2018 at 11:13am
I think it is fake, I tried to contact them, no reply and no phone number.
Comment by Tommy Larsen on February 6, 2018 at 11:57pm

Same here. Sent them several emails but no reply.


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