it no longer load

Scam?
This was my backup battery. I loaded once its purchase, it was OK, it served a little. Then I wanted to recharge these days, but no longer supported. She pretends to recharge few moments and then curtain. We can not even turn the phone when it is inside!
A specialist "auscultated the battery". She is dead. Perhaps this is due to the fact that she stayed too long without recharging. She is discharged to death.
His advice: First fully charge and then fully discharge 3 times a new battery, it is still relevant; then alternate monthly use of two batteries.
She said a good quality battery should be recharged even when using the instruments available to it!