$51.99 Saft 1 2Aa 3.6 V Lithium : Saft 3 6v Lithium Battery Ls14250 1 2aa / Up to 25 years of mass 
EVE ER14250 1/2 AA Size 1200mAh Lithium Battery Cell 3.6V 233703 | Rapid Online
EXTECH 1/2 AA Battery, 3.6V DC, Lithium, Button, 1,200 mAh, PK 2 - 4FJL3|42299 - Grainger
