A123 batteries

jopor · 07-29-2008, 03:28 PM

Hi

does anyone know about those batteries

Hypersonic™ 2300 6.6V
2300 mAh, 6.6V, Lithium Ion, 2S1P

Hypersonic™ 4600 6.6V
4600 mAh, 6.6V, Lithium Ion, 2S2P

Nanophosphate® 2300 6.6V
2300mAh, 6.6V Lithium Ion 2S1P

and what do you think about them?

give some feedback

thanks

xrayeddy · 07-29-2008, 03:35 PM

The new packs fit in most cars with no problems, but they're only 6.6v. It's not a problem if you race modified or bash.

I've run them in an converted xb8, savage, mf2 and in my xx4 with no problems other than the lack of punch you see with lipos and nimhs.

mattnin · 07-29-2008, 06:17 PM

I've been using A123s for awhile now and they are ok for modified class, but I have had to modify every vehicle I ran them in so they fit.

jla8874 · 07-29-2008, 07:44 PM

I dont know if you can still get these, but a while back people were buying HUGE DeWalt batteries, 36 volts I think, on ebay for like 100 bucks and they a BUNCH of A123's inside them.

Born2Run · 07-30-2008, 12:57 AM

Huge and expencive cells.I don't think they'll fit on a TC.

alf.skaar · 07-30-2008, 02:04 AM

I run them in my TRF416, good punc, top speed, mod motor, run time

Alf :-)

Born2Run · 07-30-2008, 02:08 AM

Quote:

Originally Posted by alf.skaar

I run them in my TRF416, good punc, top speed, mod motor, run time

Alf :-)

Could you post some pics of your car with these batteries?

lauri · 07-30-2008, 03:24 AM

Expensive? I don't think that 16$50 for a cell is too much if you need 2 or 4 of them (2s2p). That makes 66$ for the 2s2p 4600mAh 280g 6.6V nominal voltage pack. Advantages over LiPo are huge - very high charging current (can be charged in 15 minutes), hardcase, won't burst into flames, can handle low-voltage discarge (even to 0V and still ok). These are the "deWalt 36V" batteries or A123-s. They only have a bit worse Wh/kg ratio than LiPos, but better than NiMH and much more user friendly than both. Most newer chargers already know how to charge them.

http://media.hyperion.hk/dn/a123/123-brief.pdf
http://www.aircraft-world.com/shopdi...asp?search=yes

Even our local small battery-shop is selling them. In white "no-name" casing like the Hyperion one but without the logo. OEM from A123 I think.

Born2Run · 07-30-2008, 04:27 AM

Maybe they are not so expencive but are huge.I would like to see how they fit on a TC.If some could post some pictures it would be very helpful.

mattnin · 07-30-2008, 04:48 AM

They are big, but they can be made to fit in a TC. Also, they are not expensive, they are way cheap. The pack I made cost about $40 and it is a 3400 mAh battery pack, has lots of punch, charges in about 15 minutes and of course, much safer than a LIPO.

I will take a picture later on today with it in my T2 007. I will even take a pic with my car on the balance blocks with the A123 mounted inside.

-Matt

fathead · 07-30-2008, 04:50 AM

They fit easily check out this post from last year

http://www.rctech.net/forum/showthre...23#post3673656

Born2Run · 07-30-2008, 05:04 AM

TNX fathead.That's exactly i was looking for.Unfortunately the don't fit on my FK05 for a few mm or at least without modifications.

jla8874 · 07-30-2008, 06:05 AM

What ever happened with that press release A123 put out talking about
"daisy-chaining" (2) A123 chargers together and charging a pack in like 5 minutes?

mattnin · 07-30-2008, 10:12 AM

As promised, here are a couple pictures of my A123 battery in my 007. I forgot that my speed control is in the shop, so I can't balance the car on the blocks for you. Also, I normally use a Tekin Redline 368 motor in there. I only threw in the Novak because I was troubleshooting my speed control.

jopor · 07-30-2008, 03:45 PM

When using on mod class would you use A123 or LIPO.
Which are the reasons for A123 and for LIPO.