Sound Devices XL-B14500 Li-Ion Rechargeable Batteries -- 1200mAh, 4.4Wh, 3.7V lithium-ion rechargeable batteries (2 per pack). Provides over 10 hours of run-time with A20-TX transmitters. [modal title="HAZARDOUS MATERIALS NOTICE" button_text_opener="SPECIAL SHIPPING NOTICE" opener="button" button_style="alternative" ]Please be aware that US Federal regulations qualify certain lithium batteries as "Hazardous Materials". This qualification carries with it an additional fee…