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Posted 20 hours ago

Energizer AA Batteries, Ultimate Lithium, 4 Pack Double A Battery Pack

£9.9£99Clearance
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ZTS2023
Joined in 2023
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About this deal

I love Energizer batteries and rarely have any problems with them other than a "leaky death" after a lot of use when using the rechargeable batteries. I was expecting big things from these batteries but the first thing I noticed was how light they were and I got worried. After all, the poor, poor, Wilko batteries were very light. Almost the same weight as these, and they were awful.

Leak-resistant and boasting a shelf life of as long as ten years at room temperature, Ultimate AA/LR6 Energizer cells deliver reliable power. They continue working in extreme heat and cold: the manufacturer-recommended temperature limits are -40°C (minimum) and 60 degrees Centigrade (maximum). Especially useful in portable appliances, the battery weight of 100 grammes is around 30 per cent less than typical alkaline cells. The other two, more expensive and powerful batteries were reassuringly heavy and lasted very well. So, how did they do? Surprisingly, I got the exact same amount of flashes (229) out of the Duracell AA batteries before I reached the 30 second benchmark for powering up for the next discharge.Each LR6/AA cylindrical cell measures 51 millimetres (height) by 15 millimetres (diameter). Ultimate AA batteries are direct replacements for size codes AM3, E91, FR6, L91, KAA, MIGNON, MN1500, ND62S, R6, UM3 and 4006. Alkaline : The mainstream battery technology for high-drain devices. They’re cheap and very easy to find, and last much longer than the old zinc chloride batteries. Technical advances have also seen the major problems – a short shelf life and a propensity to leak – reduced or even fixed. New long-lasting Energizer Ultimate 1.5V AA or LR6 batteries are capable of lasting up to eight times longer than standard equivalents. Renowned for durability, the Ultimate lithium range is a top choice for devices with occasional high current demands. As my office cooled after opening a window, I seemed to get longer periods of firing and got up to 80 flashes in a row before the batteries overheated. After all, I was firing at full power as soon as they had recycled each time. Similar applications in which lithium cells offer an advantage include personal grooming accessories, PIR sensors, high-tech flashlights and night-vision goggles. In particular, lithium cells work well in equipment that demands occasional short bursts of high current – not least in photography flash units, where their relatively light weight is also beneficial.

Lithium batteries are well known for overheating when used in an extreme way such as this. It is best not to do what I did and fire continuously at full power until depleted. I suspect that in most cases, photographers do not work this way.In many cases, yes. rechargeables don’t deliver as much voltage as disposables (typically 1.25V rather than 1.5V), but they normally maintain the same level for longer and can just be recharged when they run dry. You pay more upfront for the batteries and the charger (if you need one), but you’ll recoup the difference within a couple of uses – and AA batteries cost so little to recharge that it’s barely worth thinking about. Factor in the clear environmental issues and it’s a no-brainer, although many local councils and some supermarkets now offer free recycling. So, for an extra 20% or so in cost, I got more than 100% extra use out of the lithium AA batteries. Not bad!

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