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Energizer Ultimate Lithium AA Batteries
Energizer Ultimate Lithium AA Batteries

Energizer Ultimate Lithium AA Batteries

SKU: MN1200
Pack of 4
£9.99 £8.99
In stock (despatch in 1-2 working days)
2 Packs of 4
£15.99 £8.00 each
In stock (despatch in 1-2 working days)
1

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Overview

With a huge range of batteries available, the choice of which battery to use can be unnecessarily difficult. Fortunately, we've done some of the hard work for you by comparing different battery brands in our Winter Warmawear™ selection. We compared the three main brands of battery; Panasonic, Duracell and Energizer Ultimate Lithium.

What Did We Do?

We used all the different batteries on the same Warmawear™ Deluxe Heated Glove Liner on a medium heat setting while it was inside our Warmawear™ Dual Fuel Burst Power Battery Heated Sports Gloves. These were then placed outside on a cold day with a digital thermometer placed inside the glove, at the very end of the fingers. Readings were taken every minute for the first fifteen minutes, and then in 5 minute intervals.

What Did We Find?

One of the first things we noticed when testing these batteries was the difference in weight. The Energizer Ultimate Lithium batteries weigh a mere 14.5g each, whereas a full set of Duracells will add another 30g to the weight of your gloves.

Battery Life:

The complete lifetime of these batteries had a difference of 4 hours 45 mins. The lowest lifespan was for Duracell at only 1 hour 45 mins, while Panasonic lasted for 3 hours. The winner, however were the Energizer Lithium batteries that lasted for a massive 6 hours 30 mins!

Something else important to note is that, because of how long the different batteries lasted, they work out at different costs per hour. For a pair of gloves, Duracell will cost you £3/hr, Panasonic £1/hr and Energizer £1.50/hr.

Peak Temperature:

In terms of the temperature reached, the Energizer Lithium batteries again won the race, reaching 37.9°C. Duracell came in next at 34°C and Panasonic fell at a still-respectable 30.8°C.

The Energizer Lithium batteries were also the first to reach their peak temperature, taking only 15 minutes to reach the heights of 37.9°C. To compare like for like, the temperature that Panasonic batteries reached at their peak (30.5°C) after was 45 minutes was reached by the Energizer Lithium batteries after only 2 minutes. The temperature that the Duracell batteries reached at their peak (34°C) after 45 minutes was reached by the Energizer Lithium batteries after only 6 minutes.

Which Batteries Do We Recommend?

Overall it has to be the Energizer Lithium. They lasted the longest length of time, reached the highest peak temperature and were the quickest to warm up.

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© 2026 Cercis Ltd. All rights reserved | Primrose is the trading name of Cercis Ltd (Registration number: 14521244)