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NIMH x2

Old 11-02-2010, 11:59 AM
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hpiracr28
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Default NIMH x2

Is it possible to wire up two nimh batteries and get even more power to make my bandit haul? or would that be too many volts. Iwas thinking if i could get two 6 volt nimh batteries, wire them up, thats 12 volts of power when a lipo's output is only 11.1 volts. or is that a different kind of power?
Old 11-02-2010, 01:07 PM
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Scottgir
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Default RE: NIMH x2

Possible...yes. You have a lot of issues though. 1. You're looking at 6 cells or 7.2V so 2 would be 14.4. You need to make sure your esc and motor can handle that much juice.

Also mounting into your buggy. You don't want 12 cells doing a "superman to the rescue" out of the buggy.

When I used to "play around" with some crazy builds, I installed bullet connectors (males on positive and females on negative inside the protective plastic tubes) for my batteries. If you plug one packs negative bullet into a positive, it's an instant 12 cell pack. You NEED to make sure the packs are the same mah. And if you can, try and figure out the performance and NEVER let the packs go empty. As soon as you see the "speed drop". Stop running the batteries.
Old 11-02-2010, 01:39 PM
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Default RE: NIMH x2

He said 6v, not 6 cell.
Old 11-02-2010, 02:09 PM
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Default RE: NIMH x2

I would estimate that using 10 cells (that's 5-cell pack at 6v each) for 12volts setup in your Bandit will only be slightly faster than a 11.1v lipo setup. My reasoning is based on the characteristics of Nimh. You will most likely not get the punch off the line from Nimh that you would get from a decent 3s 11.1v lipo, and also the Nimh will lose its initial speed and punch soon after a couple of minutes of running, and die down on a slow basis thereafter. Also, under load (as in on throttle) Nimh will dip in voltage a lot more than a Lipo will.

BUT, if you already have the batteries, and don't mind gearing a couple of teeth down on the motor (to help with the extra pack weight and heat at higher voltages) AND if your ESC can handle the voltage, go for it.
Old 11-02-2010, 02:14 PM
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Default RE: NIMH x2



well im not sure what my motor and esc can handle, but i have the stock motor and esc in a bandit vxl. i was just looking for more power without buying a lipo. i would probably rig the voltage up just below what the vxl system can handle.

Old 11-02-2010, 02:19 PM
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Default RE: NIMH x2

The VXL as I remember is rated for either 9 or 10 cells. Check your manual.
Old 11-02-2010, 04:01 PM
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Scottgir
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Default RE: NIMH x2


ORIGINAL: ThunderbirdJunkie

He said 6v, not 6 cell.
Yes, -1 for me on forum etiquette. Made an assumption that he had 6 cell packs and mistakenly was calling them 6V. But there is the chance that he has 5 cell packs. So I apologize for the poor assumption, but my points still stand.
Old 11-02-2010, 04:25 PM
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Default RE: NIMH x2

A fully charged lipo cell is 4.2v. (I'm pretty sure) That makes 12.6v for a 3s lipo. I'm interested to see if, ...how you get 10 nimh cells in there.
Old 11-06-2010, 01:57 AM
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Default RE: NIMH x2

9 cell max, i tryed 10 cell and voltage protection kicked in.
Old 11-07-2010, 08:16 AM
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Default RE: NIMH x2

I think this may be what you need to do what you want, a series adapter.
http://www3.towerhobbies.com/cgi-bin...&I=LXXKN0&P=ML
This will double your voltage.
But as stated above, check your esc specs!

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