- Are the Energizer MAX AA and E91 the same battery?
- Effectively yes. Both are 1.5 V AA alkaline cells with IEC code LR6 and NEDA code 15A, and both weigh 23 g. The MAX is the retail line; the E91 is the industrial/contract line.
- Which lasts longer in a flashlight or toy?
- On paper the MAX, which lists 3500 mAh against the E91's 2850 mAh. In practice both are standard alkalines and the gap is small; either will run a flashlight or toy for many hours.
- Is the E91 worth buying over the MAX?
- Yes if price is the deciding factor. At $5.48 for a 4-pack at The Home Depot as of November 6, 2026, the E91 is the cheaper known option, and no MAX price was given to compare against.
- Which is better for storage in a drawer or garage?
- The MAX, with a 12-year shelf-life claim versus 10 years for the E91. Store either below 25°C and away from heat to get close to those numbers.
- Do these leak and damage devices?
- Energizer states Powerseal protects devices from leaks for up to two years after the MAX is fully used. No equivalent leak-protection claim is stated for the E91.
- Can I use either in cold weather?
- The E91 is rated to operate from -18°C to +55°C. The MAX lists a discharge test at 21°C but no cold-weather range, so the E91 has the clearer cold-weather spec.
