8 V is too much. Look for 7.5V against a fully-charged battery. This is vitally important, as the condition of the battery is what determines what the voltage regulator does. Setting or checking regulator settings against a partially-discharged battery is an impossible task.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!