![]() This is because lithium is light - it’s the lightest metal and lightest solid element under standard conditions. The uses of lithium and alkaline AAA batteries differ due to several factors:Ī Lithium AAA battery weighs about 33% less than an alkaline AAA battery. Lithium AAA batteries also have a low self-discharge compared to their alkaline counterparts, which further contributes to their long shelf life. Lithium batteries, on the other hand, have a capacity of 1,200 mAh. With this in mind, alkaline AAA batteries feature a capacity of 850-1,200 mAh, depending on the type. If, for instance, a battery has a capacity of 800 mAh, it will supply 800 milliamps for one hour or 400 milliamps (mA) for two hours. The higher the mAh of a battery, the longer the shelf life. The electrolyte can be a lithium compound - also known as a lithium salt - dissolved in an organic solvent.Ī battery’s capacity refers to the maximum amount of energy that can be extracted from the battery over time. The cathode can be iron sulphide powder combined with powdered graphite. ![]() This gives us an idea of the chemical energy each battery uses to generate electrical energy.Īlkaline AAA batteries use zinc and manganese oxide as the electrodes and potassium or sodium hydroxide as the alkaline electrolyte.Īs for lithium AAA batteries, they all have metallic lithium in the anode. The chemical name for lithium AAA batteries is lithium iron disulphide or Li/FeS2, while alkaline batteries are alkaline manganese dioxide batteries. ![]() This causes a significant difference in the performance and usage of these batteries.Ĭhemistry of AAA Alkaline and Lithium Batteries The materials used to make lithium AAA batteries differ from those used on their alkaline counterparts. An example is l ithium ion batteries (Li-ion) which are rechargeable and used in laptops and tablets.īut our focus is on the 1.5V lithium AAA battery, which is a perfect substitute for the 1.5V alkaline AAA battery. Keep in mind that there are different kinds of lithium AAA batteries with voltage as high as 3.7V. We will help you make up your mind by breaking down the main differences between lithium and alkaline AAA (triple-A) batteries.Ī typical AAA battery measures approximately 44.5mm (1.75in) long, including the positive terminal button, which is 0.8mm (0.031in) It has a diameter of 10.5mm (0.41in). Mainly because alkaline batteries are more popular than lithium, but lithium batteries offer better performance. This is a common dilemma among most battery buyers.
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