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09-27-2007, 06:08 PM
| #1 |
| Quarry Creeper Join Date: Jun 2007 Location: Calgary, Alberta
Posts: 291
|  Elite 1500 2/3a. 10 Cells?!
I just picked up 2 of the elite 2/3a 1500 packs today. My plans are to hook them up in series and get 12 volts out of it to run my 70t in my AX10. They fit great right on the front axles! My questions are: is 12v too much? Is the BEC of the mamba max going to be over-run with heat? And for charging....If I charge them in parallel, does the charger only see it as 5 cells, 3000mah? I surely can't charge them in series, with a 8 cell max on my charger....What to do?
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09-27-2007, 06:51 PM
| #2 |
| Keep it real   Join Date: Jun 2006 Location: Yakima,WA
Posts: 6,532
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Depending on the servo you are running, the BEC most likely will not be able to handle the voltage too well, but if you are running an analog servo, it might be OK. The 12v will actually give you more power and more wheelspeed, a plus with a 70t motor. I'm not sure on the charging.
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09-27-2007, 07:19 PM
| #3 |
| RCC Addict  Join Date: Oct 2005 Location: Trussville, AL
Posts: 1,762
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why wouldnt the bec be able to handle this? the esc or the reciever cuts down the voltage from the batteries and only allows 6V to go to the servo
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09-27-2007, 07:23 PM
| #4 |
| Quarry Creeper Join Date: Jun 2007 Location: Calgary, Alberta
Posts: 291
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Im just going to give it a try and well see what happens. I finished removing the RX-connection and tiny wires to #14 and deans. I can't try it tonight because i forgot to get a series deans connector.
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09-27-2007, 07:26 PM
| #5 |
| owner, Holmes Hobbies LLC  Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Your BEC will be almost useless. Give it a shot, but your ESC will run hot and probably shut off. As for charging, charge them as two packs. It is not a good idea to charge them in parallel, although you can in a pinch. For your first five charges, charge at .1 or .2 amps. After that you can go 1-2 amps no problem. |
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09-27-2007, 07:51 PM
| #6 |
| Quarry Creeper Join Date: Jun 2007 Location: Calgary, Alberta
Posts: 291
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I guess I have to charge them as individual packs then. My Piranah charger says its only good for up to 8 cells. 10 cells in series is too much I guess. Why is it that you shouldn't charge in parallel?
Last edited by Renslipevol; 09-27-2007 at 08:07 PM. |
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09-27-2007, 08:58 PM
| #7 |
| I wanna be Dave Join Date: Jun 2007 Location: Canada, eh.
Posts: 2,919
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I don't see why the MM wouldn't be able to handle 10 cells (12V) since it's rated for up to 14 cells (14.4V). Yeah, the MM doesn't have the greatest internal BEC and it'll be warm, but I don't see it shutting down myself unless you're running a digital servo as well. If you do have problems, you can always disable the internal BEC and install an external BEC. But maybe you don't want to run a fan on the esc and void your warranty ;)! |
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09-27-2007, 09:12 PM
| #8 |
| owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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Just for the record I run my MM on 4s frequently. I use an external BEC for this. Charging packs in parallel isn't a good idea because you wont necessarily charge them evenly. If one pack has a bit more resistance it will be undercharged while the other gets overcharged. |
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09-27-2007, 10:10 PM
| #9 |
| Quarry Creeper Join Date: Jun 2007 Location: Calgary, Alberta
Posts: 291
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Yeah, I see the problem with parallel charging. I noticed I started running into problems with the BEC at 8.4v., and probably get worse at 12v. Im going to have to hardwire the series connection as the dean series plug is ...well.....fugly. Man, I guy can't get by with one charger anymore.
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