flatout->

Can anyone tell me if the stock esc on my Xray M18T could take the current from a 7.4v lipo batt?

guver

My Feedback: (325)

The esc will only pull current that the motor is pulling, the question should really be can the specific lipo take the current that the M18 t will pull? If the esc and setup use a 6 cell pack then it will take the voltage of the lipo.

flatout->

I'm a newb to electric vehicles. I thought lipo batts have a higher amperage than ni-mh ones? Which could blow the esc as a result of too much current being pumped through?

Jrgunn5150

THey have a higher discharger rate, but it still won't dischage more than your motor demands. It'll be fine, just watch that you don't over-discharge it. I would use a LVC.

guver

My Feedback: (325)

No, it doesn't work that way. Most lipos have a rating that is the max current that can be pulled from it under certain conditions. The current (up to the max of the battery) is determined by the motor/chassis/gear/prop/esc set up. You could easily use a Lipo that has a 1000 amp rating on your set-up and it would be fine as it may only pull 10 or 20 amps.

For some reason many people are thinking the same way as you and mistakenly think that a battery with a high rating "pushes" the current. The max rating comes into play only as the max capacity is approached and indirectly will allow the set-up to pull a higher current because of the higher voltage that is maintained.

The question you're asking directly applies to voltage , however and could be said that the voltage is "pushed" or delivered by the battery and can a specific set-up handle the "voltage"

In your case the setup is designed for 7-8 volts I assume and a 2S lipo is right in line. The only concern would be to size the current capability (amps) of the lipo well above the current requirement of the set-up.

Oh yes, I forgot to use the lvc or time the runs so the voltage doesn't get pulled too low on the battery. If it does it can ruin it before you are able to tell.

flatout->

Guver, I thought amps represented the force or "push" of the current and voltage the 'amount'? I'm assuming this is why motors generate more torque when used with lipos because they are higher amperage than ni-mhs?

hands without shadows

Motors can generate more power with lipo batts because good lipo batts can provide more current than Ni-mh. The motor will pull as many amps as it needs or as many are available, when not enough current is available (some Ni-mh setups) the motor doesn't perform at its max.

flatout->

Ok, I think I understand now, thanks for all your responses guys[8D]

hands without shadows

You're welcome, sharing knowledge is what it's all about.