Can you damage a battery from a demanding setup?
 

I'm considering a neu 1110 (400w cont., 1000w surge) and to be powered by a fp eonX30 pack which can supply 400w cont, 800w burst.

Would this potentially damage the battery? Could spikes that attempt to draw 1000w stress the battery?

probably depends on the ESC, if the ESC can't handle the 1000W then the ESC would fail before the batteries. Additionally if you have a capcitor it should lesses the peak draw from the packs a little...

But a better answer is probably on its way from BrianG or one of the other electronics people.

I'm planning on using a 10th scale sidewinder, which should be fine - at 3S 400w is only 36A

Also it seems on the castle neu motor list, they show the 1110-1Y as only pulling 800w surge, which is substantially less, and within reach of the battery.

Still, it would be nice to know whether battery damage is possible from a scenario like I posted.

Thanks

You gotta tell us more information about the setup you plan to use it in. But, just judging by the battery/motor combination, you might want to get a battery that can handle more continuous watts, maybe around 600 - 800watts... just to be safe.

I'll just say this, it's very very light. :)

ie: it should be childs play for a 1110. (think hemi in a pram)

if it is going into something very light the motor shouldn't have to draw the max wattage it is capable off (it can only spin so fast).... Right?

that's what I figured.


Also I believe I can fit a hyperion 1600 3S G3 35c - should be able to provide 1154w :intello:

A battery pushed too far (sometimes not even close to its rated rating) can certainly be damaged. However, just specifying the motor doesn't help answer the question. Specifying the weight does help, but what speed do you plan to attain? The load on the motor (and ultimately the batteries) is determined by vehicle weight and speed when you boil it down. Low weight and high speed can be just as hard on the system as a heavy weight, but slow speed.

Power rating of the ESC or motor doesn't really help either. The average power draw from a larger vehicle like 1/8 buggy, truggy, and MT is between 200w and 400w from the setups I've seen. That's not a whole lot when you think about it. But, the burst power is quite a bit higher, and high current is what kills batteries. An ESC will funnel whatever power it can get to the motor. The only losses are from FETs switching speed and rdson value, and some wire/trace losses. A good motor is quite efficient so most of the power is going to the ground. As long as the max current and voltage spikes are at or below the ESC and motor ratings, and there is adequate cooling for the heat that is generated, you're good to go.

I guess I will be absolutely fine with the hyperion pack, especially as the motor is rated at 800w surge according to castle. (and that hyperion can do much more if the specs are to be believed) I think it will have no problems, speed or weight wise pushing what I have for it.

Thanks brian. (And everyone else)

are caps needed with a brushless setup or even recommended?

**slaps noob on the head with a spoon** :wink:

Most, if not all escs have caps built into the esc as standard- what we're talking about here is something a bit different. If you take an esc that isnt ideally suited to the job, and run it on a higher voltage than intended with a larger than intended motor too, in a larger vehicle than intended, then extra caps can be very beneficial.

Best examples would be an MM with an 8Xl on 4s lipo, or an old Quark 125b being ran on 6s (they didnt always like 6s despite being rated for it, where as the MM is rated for 3s lipo and S can motors).

Hope that clarifies things, but should you yearn for more info, have a read of my tutorials:

http://robotwars.00server.com/tutorials.html

Hows about you tell us what wind motor and what voltage battery and c rating and quit being secretive... I can answer most lipo questions, and can safely save that a 1s 800mah 30c lipo will not work well with any neu motor unless you are installing it in a mini t and gearing it for 2mph. Now that last statement was completely useless, much like your question.

If you do not want to tell us what you are doing do not waste our time and Mike's space asking silly questions.

See this example. 10s lipo 20c that puts out 400watts cont would have a capacity of 500mah... Or a 2s lipo of the same capability would have 2600mah. And vehicle weight size and desired speed have a huge impact on battery requirements. A crawler can make due with a very small lipo, where a land speed car will need a huge, capable lipo.

What he is working on is TOP SECRET.. LOL...

Oh yeah, I would not want him to let the cat out of the bag, might ruin the surprise!

I am not trying to be "top secret" about anything, I simply thought it was a case of only the wattage mattering in terms of battery damage. I apologise for being a NEWBIE.

I did in fact mention what motor and battery I will be using, a 1110-1Y (5000kv), with a 35c Hyperion 1600 3S, using a 10th scale sidewinder. It will be pushing a 13oz rc18t. Now before you get all technical and tell me that it is far too much power for the car, well, that's what I am aiming for. I will be gearing HIGH.

However, if you do think that I might have difficulty using the motor without undergearing it and overheating it, then I would like to know. Thanks.