Max + power seal. Protects your devices (from leakage of fully-used batteries up to 2 years). Holds power (shelf life) up to 10 years. That's positivenergy. www.energizer.com. Energizer Max batteries are designed not to leak in your devices. Guaranteed (For up to two years after fully-used). For more information. 1.5 V alkaline. Made in USA.