Was talking to a wallbuys rep about the 50% sale just now, now they have set up this battery sale to make up because many people have missed it during the earlier sale just now.
18650 3100mAh NCR18650A Rechargeable Li-ion Battery(Panasonic Battery Cell)-Dark Green(2-Pack)
$11.90 Free shipping + free tracking
Promotion end on 31st dec, ship on 31st dec as well.
Banggood had the same batteries for $11.25 a couple of weeks ago. These don’t have a protection circuit.
For protected 3400s these KeepPower seem to be the best deal currently. Quality seiko protection & free shipping.
Boooo 3100 unprotected, id rather 3400 protected or non
Sam thank you for posting this. I just bought 4. I was cycling some of my 18650’s over the holidays and a couple were down to 630 mah if discharge was higher than 500 mah 
They were laptop pulls so I got my use out of them.
looks good…
Ordered mine just now… 3100 and 3400 not much different for me…