Hello
I was worried that one day I would get over excited and fly until my Batteries ran dead...
And so not wanting to practise my death rolls I installed a Quick UK On Board Battery Monitor...
You can tell the voltage by looking at which LED lights up...
The unit plugs into a spare receiver port... So at a glance you always know where you are...
If you turn your Volt Meter three clicks to the left... It should read Volts - 20, and then put the probs into a spare slot on you receiver, this should also give you the current read out...
But the battery monitor works a treat and looks great...
Hope this helps...
Cheers
Matt