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Old 04-06-2004, 02:34 PM   #1
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Default New NEC Battery Technology

Not sure if anyone else has already reported this but:

http://neasia.nikkeibp.com/wcs/leaf?...bt/news/299678

Apparently these new "organic radical batteries" have the same power as current NiMH cells but only charge in 30 seconds.

The article specifically mentions radio controlled cars.

I don't know if this is a late April's fool joke or what. Does anyone else have information on this?

Slashdot discussion is here: http://science.slashdot.org/science/....shtml?tid=126
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Old 04-06-2004, 02:48 PM   #2
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interesting. if its true, i wonder how long until we see them
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Old 04-06-2004, 02:57 PM   #3
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I don't think it's an April fools joke; NEC Research Labs have discussed this technology in the past, I remember reading about it a few years back. It sounds like they are closer to bringing it to the marketplace.

However, I'd be hesitant to give the thumbs up to the technology for R/C applications. They mention that one of their problems is limiting the discharge current, which is why their first useful application is in uninterruptable power supplies, where the current requirements are quite large.
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Old 04-06-2004, 03:16 PM   #4
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Talking wow!

if this newly bread type battery come into market it will be test if its suitable for high current drain like our metal hydride, we need also to buy a charger specifically design for this type and do this battery fits in our rc kits?

a 30 sec. charge is a plus in a race!

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Old 04-06-2004, 03:45 PM   #5
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At 6 amps, its takes 30 mintues to charge 3000 mah (1/2 of 6000mah)

Therefore, in order to charge 3000 mah in 30 seconds you would have to charge at 72 amps.
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Old 04-06-2004, 04:09 PM   #6
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That sounds like some cool stuff. But will it be legal. Maybe if Trinity sells them it will but other than that I doubt it. But I am excited that I might be able to charge my drill and sawzall batts in less than a minute.
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Old 04-06-2004, 07:15 PM   #7
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Yeah like Shane said unfortunately those batteries have a long ways to go before they can handle the loads of R/C racing. I mean NiMH cells were out for a good while and look how long it took them to make the Pana 3000 (blue).
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Old 04-06-2004, 07:46 PM   #8
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i get 360 amps to charge 3000 in 30 seconds

am i doing something wrong?
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Old 04-06-2004, 07:48 PM   #9
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Quote:
Originally posted by PitCrew
At 6 amps, its takes 30 mintues to charge 3000 mah (1/2 of 6000mah)

Therefore, in order to charge 3000 mah in 30 seconds you would have to charge at 72 amps.
Good point, but it still wouldn't reach its full capacity. But will the batteries be able to handle the amps that an mod motor draws?
And if it takes 30 sec. to charge one battery it would take roughly 3 min. to charge a 6 cell pack.

If these ever come out, wonder how much they'll cost. . . . and the charger for them, and a matcher for the packs to be matched.

I need 1 battery, I have an MD player,
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Old 04-06-2004, 07:58 PM   #10
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haha...
no...
we don't solder our batteries parrarel so even though there are 6 cells, it would still be fully charged at 30 seconds
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Old 04-06-2004, 07:59 PM   #11
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Yep, it would be about 400 amps to put 3400 mah into this theoretical "battery".

Will need bigger wires on our chargers.......
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Old 04-06-2004, 09:14 PM   #12
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That would put some serious strain on the track's wiring also.
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Old 04-06-2004, 09:29 PM   #13
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We assume to charge a 3300mAH battery with 400AMPs at 8V, have to use 2 cells in serial connection.

Total power when charging = 400 x 8 = 3.2KWatts

When there is a race event of may be 80 participants,
thus total power draw for the race = 3.2 x 80 =256KWatts.

I think we the organizer has to pull cable direct from the local power station in order to have sufficient supply power.
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Old 04-06-2004, 09:47 PM   #14
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The charge also has to be very bulky and heavy.

And is going to be very expensive $$$$$....

And the charger also very expensive, due to the electronic components must be very high current rating to cater for 400AMPs charging current.
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