The Mathorn Ultimate AA NiMH 2600mAh is one of the most efficient nickel-metal hydride AA (HR6) batteries available on the market. It features a very high actual capacity of up to 2600 mAh, which has been confirmed by both laboratory and practical tests. Thanks to its low internal impedance of below 30 mΩ, this battery has minimal heating during use, allows for fast charging up to 1300 mA, and offers a long lifespan of over 450 charge and discharge cycles, still providing more than 88% of its nominal capacity after those cycles.

Nickel-metal hydride technology (NiMH HR6) is still the best, safest, and most cost-effective alternative to alkaline batteries. Unlike the increasingly popular AA lithium-ion batteries, NiMH batteries do not require an internal voltage converter, which generates electromagnetic interference and may negatively affect the operation of some devices. Therefore, NiMH batteries are the most optimal power source for devices such as speakers, radios, microphones, sound recorders, and cameras.

Another advantage of NiMH batteries is the gentler and less flat discharge curve, which significantly affects their performance. During discharge, the voltage remains stable for a longer time, and in the final phase, it begins to drop more quickly, which is properly signaled by most devices.

In the case of AA Li-ion batteries, the voltage drops sharply at the end of the discharge cycle, causing the powered device to suddenly shut off without a low battery warning. Additionally, the flat discharge curve makes it difficult to effectively determine the battery’s charge status, as even when charged to half of its capacity, the battery will still show the same voltage reading, e.g., 1.5 V.