Hi, just spotted these if it helps anyone out here in the uk 
http://www.torchdirect.co.uk/rechargable-li-ion-batteries/tank007-18650-2600mah-li-ion-protected-batterybr-sealed-pack-of-2-batteries.html
Iv also just seen these from the same company
http://www.torchdirect.co.uk/rechargable-li-ion-batteries/xtar-18700-37v-2600mah-li-ion-protected-battery-sealed-pack-of-2-batteries.html
I’ve bought a few lights from Torch Direct. They are amazingly efficient, and I’ve always got what I ordered the next day if I order before 2.00pm. I’m so confident that I once held up leaving the house until the postman arrived on a Saturday, having ordered something on a Friday morning.
Some good bargains occasionally.
They are part of the Xtarlight - who distribute some (but, curiously, not all) Xtar products in the UK. They have had the Xtar 2600 cells for some time at £11.99 for a pair.