RE: WOW CHEAP A123 packs for mini's!  
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> 1/16th, 1/18th, Mini & Micro RC Cars >> RE: WOW CHEAP A123 packs for mini's!
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RE: WOW CHEAP A123 packs for mini's! - 5/13/2008 11:15:28 PM   
Beomagi



Posts: 238
Joined: 1/3/2006
From: Bayonne, NJ, USA
Status: offline
quote:

ORIGINAL: westphill24

has any one tried 3 cells with an 18t? I also wanted to know are they that much better than nimh I can get a 7cell 1400mah nimh for $24 so if its not a performance enhancer I mind as well stick to the them.


3 cells would give 9.9volts, vs the 8.4 from the nimh. A123's will also be able to output more amps at those voltages. You'll have to be creative too fit them though.

What runtimes are you guys getting with these 1100mAh a123? can you state the pack config, motor and car model? I just can't see these giving much runtime.

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       Post #: 151

RE: WOW CHEAP A123 packs for mini's! - 5/14/2008 1:52:01 AM   
Metallover



Posts: 818
Joined: 6/21/2007
From: Brandon, SD, USA
Status: offline 		They have the same mah as the losi packs that come with the rtr mini t and lst series. I had a mini lst with dual frenzy motors and stock esc and it got around 15 minutes by my best guess. Exact runtimes are hard to judge because every run isn't the same. 1100 should give you that or more with a 400 seze brushless motor, probably at least 20 with a mamba motor.

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If the mamba 8000kv is overkill...

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       Post #: 152

RE: WOW CHEAP A123 packs for mini's! - 5/14/2008 2:44:29 AM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		using the 2 cell a123 the black and decker 1100mah vpx pack I get around 20-25 mins of runtime with my mamba 6800kv, compare to the losi 7.2 volt packs which I get about 15 mins

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       Post #: 153

RE: WOW CHEAP A123 packs for mini's! - 5/14/2008 2:47:05 AM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		o and im running the pack in a mini-t

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       Post #: 154

RE: WOW CHEAP A123 packs for mini's! - 5/14/2008 2:49:46 AM   
westphill24


 

Posts: 663
Joined: 2/17/2004
From: philadelphia, PA, USA
Status: online 		Is the difference in volts that noticeable, 6.6v vs 7.2?

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       Post #: 155

RE: WOW CHEAP A123 packs for mini's! - 5/14/2008 2:52:56 AM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		the a123 pack has much more punch, alot faster

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       Post #: 156

RE: WOW CHEAP A123 packs for mini's! - 5/14/2008 2:54:21 AM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		I run a 7.2 volt losi pack and I have one 2 cell a123 pack and let me tell you the a123 pack is by far sooooo much better, crazy power with it

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       Post #: 157

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 4:05:44 AM   
Frozen72



Posts: 3104
Joined: 11/10/2006
From: Asheville, NC, USA
Status: offline 		I'm going to Wal-Mart tomorrow to see if they have any of these packs. If not I'll have to get some off Amazon.com. Deftones123 how is your pack doing since you've been using a N-Mh charger?

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       Post #: 158

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 4:07:05 AM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		going strong, near 100 chargers, with no problems

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       Post #: 159

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 4:09:50 AM   
Metallover



Posts: 818
Joined: 6/21/2007
From: Brandon, SD, USA
Status: offline 		I got mine working. Only 4-5 charges but going great. short charge times and performance is less then a 1500 apogee 2s. I don't have a nimh pack to compare it too. I charge mine at 3.5-4a and it gets a little warm near the end of the charge. Only time will tell if this is ruining the battery. I have the stock battery bar and wire on it so that could be reducing performance some, but it is good enough for just bashing around with friends.

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If the mamba 8000kv is overkill...

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       Post #: 160

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 6:16:42 AM   
mrbonez



Posts: 318
Joined: 6/30/2007
From: smithsburg, MD, USA
Status: offline 		what volt do you take them off the charger at ??

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RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 1:12:58 PM   
Metallover



Posts: 818
Joined: 6/21/2007
From: Brandon, SD, USA
Status: offline 		Eight Point Four. It doesn't stay there if you didn't already know. Next time I charge it I'll see what it drops too.

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Dimebag Darrel 1966-2004 RIP
If the mamba 8000kv is overkill...

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       Post #: 162

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 7:52:59 PM   
mrbonez



Posts: 318
Joined: 6/30/2007
From: smithsburg, MD, USA
Status: offline 		yeah they drop voltage fast always took mine off at 8.4 but i looked away for a couple minutes and it was charged to 9.8 needlsees to say 1 of the cells fried still had about 50 cycles on it not bad for 20 bucks

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       Post #: 163

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 8:18:34 PM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		while charging the vpx battery is should not get warm at all, and The a123 pack im using is alot better then the 2 cell lipo I have by far, alot of punch, you are charging them at to high of a rate, they should get warm at all while charging them

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       Post #: 164

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 8:23:18 PM   
Deftones123


 

Posts: 1268
Joined: 10/25/2007
From: orlando, FL, USA
Status: offline 		if you are charging them at 3.5 or too 9.8 volts you are deff over charging them the cells are only rated at 3.3 volts

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       Post #: 165

RE: WOW CHEAP A123 packs for mini's! - 6/13/2008 8:49:01 PM   
Frozen72



Posts: 3104
Joined: 11/10/2006
From: Asheville, NC, USA
Status: offline 		A123 packs can be safely charged a 4C. So the 1100mah pack can be charged at 4.4 amps without damage. It should also take 15 min to charge. That is the main reason that I want to get some of these.

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