If I use a 5 cell NiMH pack do I need to use a voltage regulator?
In far and away the majority of R/C Rx applications a 6v NiMH pack provides the same faster servo speed and increased servo output power a 6v Nicad would without any of the twitches or jitters long associated with Nicad 6v systems. Nicads display a relatively high ‘surface voltage spike’ fresh off of a peak charge, and that’s what’s producing those un-nerving servo jitters. With a NiMH pack the peak voltage spike fresh off of a fast charge is dampened better, result; you’ll rarely get those annoying shakes and quakes that require a voltage regulator or ‘pre-loading’ with an ESV to avoid.
