Energizer Ultimate Lithium is a premium line of non-rechargeable batteries engineered for high-performance applications. These lithium iron disulfide (Li-FeS2) cells deliver 1.5V nominal voltage with exceptional energy density, capable of powering devices like DSLR cameras and emergency equipment in extreme temperatures (-40°C to 60°C). Unlike standard alkaline batteries, they maintain 90% capacity after 20 years in storage and reduce leakage risks through advanced sealed construction. While not rechargeable, their 20-year shelf life and lightweight design (33% lighter than alkaline equivalents) make them ideal for critical-use scenarios.
How do Energizer Ultimate Lithium batteries differ from alkaline versions?
Energizer Ultimate Lithium outperforms alkaline counterparts with 30% more energy, 1.5x longer runtime in cold conditions, and leak-resistant architecture. Their lithium chemistry enables stable voltage delivery even under heavy loads, unlike alkaline batteries that experience voltage sag.
While alkaline AA batteries typically provide 2,800mAh at 0.1A discharge, Ultimate Lithium variants deliver 3,500mAh under identical conditions. In sub-zero environments, this gap widens significantly—a GoPro Hero12 recording time drops from 1.5 hours with alkaline to 2.8 hours with Ultimate Lithium at -20°C. Pro Tip: Use these in tandem with low-self-discharge NiMH rechargeables for cost-effective device management—reserve Ultimate Lithium for emergency kits and cold-weather gear.
| Parameter | Ultimate Lithium | Premium Alkaline |
|---|---|---|
| Energy Density | 1,400 Wh/kg | 400 Wh/kg |
| -20°C Capacity | 85% retained | 45% retained |
| Shelf Life | 20 years | 7 years |
Understanding the Voltage of AAA and AA Batteries – A Comprehensive Guide
Can Ultimate Lithium batteries be used in all devices?
While compatible with most AA/AAA devices, Ultimate Lithium’s high current capacity requires manufacturer verification for sensitive electronics. Their 1.8V open-circuit voltage (vs. 1.6V for alkaline) can overload circuits designed for zinc-carbon cells.
Digital calipers and vintage radios might experience measurement drift or component stress when using these batteries. However, smoke detectors and GPS units benefit tremendously—the 123A lithium variant powers typical smoke alarms for 10 years versus alkaline’s 1-2 year lifespan. Pro Tip: Always check device manuals for lithium compatibility, as some budget flashlights lack overvoltage protection.
Redway Battery Expert Insight
FAQs
Yes, both carry-on and checked baggage accept them under IATA PI968 Section II guidelines. However, loose cells must be protected against short circuits.
Why do Ultimate Lithium batteries cost more?
The lithium metal anode and precision-manufactured FeS2 cathode increase production costs by 60% compared to alkaline, but provide 8x the operational lifespan in critical devices.
Battery Group Size Chart Guide
