BA-01: i.Trek Lithium-Ion Rechargeable Battery Pack for i.Trek M1/M6/M7/Z1, Holux GPSlim236, i-Blue 737 A+/747 A+/757 Pro, GiSTEQ Photo Trackr, Qstarz BT-Q818X/1000X Battery for i.Trek M1/M6/M7/Z1 Battery for Holux GPSlim236 Battery for i-Blue 737 A+/747 A+/757 Pro Battery for GiSTEQ Photo Trackr Battery for Qstarz BT-Q818X/1000X.