As seen on TV, the world’s longest lasting AA battery for high-tech devices. Available in a pack of 10, these Energizer Lithium AA batteries will hold their power for up to 20 years. Lithium AA batteries are also known as L91 or FR6 size batteries. These 3000mAh batteries are 50.5mm in length and 14.5mm in diameter.
Note: Change the setting on the BDR91UK to accept lithium batteries.