RE: Hobbico Voltwatch w/6.0v battery issue?
If you really want to get fancy, put a 2000 or 3000 mFd electrolytic capacitor (16VDC rated)
across the battery terminals. They are polarized.
Plus of the battery goes to plus of the cap
Negative of the battery goes to neagtive of the cap...parallel wiring
That's what to big caps are for in amplifiers, provides a big current source for
bass notes. Same deal here.
A servo at rest draws little power until commanded or holding against flight loads.
Neutral to full stick movement request demands max current available and that's
what you see as LED's fickering down as voltage is traded for current.
Put that cap in and watch your flicker disappear.
The cap will charge to the voltage of the battery and act like a redundant battery but
one that has an internal resistance much lower than your battery thus it can dump all it's juice
to the RX/servo(s) much faster than the battery and smooth out those high current demand transients.