Was at the bike shop today when the battery dealer dropped in... he flashed the old battery across a fully charged one, and then put it on to charge ...
"THIS will prove the reliability of the Lithium!", he declared
After 40 mins on the charger, battery showed 13.8 volts..... a very surprised look on his face when a mild load (35 watt headlight bulb) was connected,
and the voltage dropped to 7 volts within 3 minutes.
So then he said "Oh, you must have not ridden the bike for a few months, and allowed it to go flat!"
Guys at the bike shop chipped in "His bike is ridden almost every day, that battery was only delivered here 3 and a half weeks ago, and fitted to his bike on Wednesday last week!!!"
He conceded defeat, and took the battery with him.