However, they’re pricier than many competitors and not the best in terms of value for money. Packs of Duracell Rechargeable 2500mAh AA and Duracell Rechargeable 900mAh AAA Ni-MH batteries have very good (although not class-leading) stamina and worked flawlessly in our tests. Best value rechargeable batteries: Panasonic Eneloop. Best rechargeable batteries for total capacity: Energizer Recharge Extreme, £10.70. Rechargeable batteries can be used hundreds of times, making them much more eco-friendly. Best rechargeable batteries: Panasonic Eneloop, £28.99. Nowadays, anything that’s ‘single-use’ is second-best. In the world of advertising, the famous Duracell bunny leaves other toys in its wake, powering ahead when others have run out of juice. Venom Power Recharge 2100mAh High Capacity Rechargeable AA Batteries - Pack of 12. The only real sticking point is that the Duracell batteries are about two to three times the price of competitors from EBL, HiQuick and Powerowl. Duracell AA 2500 mAh Ultra Rechargeable Batteries - Pack of 8. There were four victor rattraps, and four ready. The Duracell batteries also gave very similar performance and staying power for other makes of NiMH battery, with higher nominal capacities of 2800mAh for AA and 1100mAh for AAA. AA and AAA rechargeable batteries along with an assortment of each size battery from Glenergy in Petawawa. So basically the Duracell AA batteries have 2.3 times the staying power, with much better performance in the later phase of their usage period.įor outright stamina, the Duracell AA and AAA batteries proved a close match to the equivalent Panasonic Eneloop Pro cells in our tests. With a fresh set of alkaline batteries, recycle speed started at 3.2 seconds, dropped to 6.5 seconds after 50 flashes, 9.2 seconds after 75 flashes and the batteries ran out after just 117 full-power flashes. That’s way ahead of alkaline performance. It slowed to 3 seconds after 280 flashes and the batteries were exhausted after 295 full-power flashes. After a full-power flash, the SB-700 recycled in 2.4 seconds, and the recycle speed stayed pretty much identical even after 270 full-power flashes. To test how this works in real life, we put a fully charged set of the Duracell 2500mAh Ni-MH batteries in a Nikon Speedlight SB-700 flashgun. Even when fully charged, they only give 1.2V compared with 1.5V for an alkaline battery, but the voltage of alkaline batteries starts dropping off as soon as you start using them. (Image credit: Matthew Richards) PerformanceĪ key performance factor of NiMH batteries is that they maintain a relatively constant voltage over their entire discharge period.
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