Replacement battery fits 5 Saft compatible models. Specifications: 2700mAh, 6V, Alkaline. Compatible with: Winfield 6800-12-1, Saflock S90040, Saflock Select 6, Saflock 6800121, 720553000. Replaces: Saflock 6800-12-1, Saflock HTL-6. Saft replacement battery designed for Door Lock devices. A precise, secure fit you can rely on.