Energizer Ultimate Lithium AA vs Duracell Coppertop AA Batteries

Buy the Energizer Ultimate Lithium for devices that sit unused for years, run in cold or heat, or drain hard: smoke detectors, outdoor sensors, headlamps, game cameras, GPS units. Buy the Duracell Coppertop for everyday household loads where you replace batteries regularly and want a familiar alkaline cell in an 8-pack. The Energizer wins on shelf life, temperature range, weight and high-drain output; the Duracell wins on simplicity and the huge owner base behind its 4.7 rating.

• Choose the Energizer Ultimate Lithium if your device is low-drain and rarely touched, lives outdoors or in a cold garage, or pulls hard current like a camera flash or motorized toy.
• Choose the Duracell Coppertop if you are restocking remotes, clocks, toys and flashlights around the house and want a standard AA alkaline in a multi-pack.