My first lithium charger and batteries. I picked up 2 Sony vtc6 off flea Bay. I'm used to using a maha 9000 for my eneloop batteries. When it finishes the mah read out gives me the total, typically 1600 to 1800 for my 2000 mah batteries. Now the xtar vc4 read 1600 mah for this Sony 3000 mah. Are they only charging to 1600 mah or is that what it took to get to full?