$63.99 LASCAR 1/2 AA Battery, 3.6VDC, Lithium, Button, 1200mAh - 20PD32|BAT 3V6 - Grainger
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
