I just got my first eGo today, a 650 mah from myfreedomsmokes that's labeled as eGo-K. I put it on the charger a few times and have noticed that the battery led button blinks about 20 times just before the charger light turns from red to green. Is this normal? The battery appears to be working fine. I've tried it with a spring loaded bottom coil clearo and with an adapter/808 carto on it. It crackles and vapes just fine. So is the 20 blinks just a sign that it's fully charged or should I suspect something here? Thanks.