This Tineco Li-ion battery is the perfect replacement for your A11 Hero, EX, Tango, and A11-06 vacuum cleaner. With a power source of electric cordless and a voltage of 21.6V DC, this battery ensures a long-lasting and efficient cleaning performance. The battery's capacity of 2500aMh ensures that you can complete your cleaning tasks without running out of power. This battery is compatible with Tineco brand vacuum cleaners and is available in a stylish blue color. The set includes one battery and is made in China. Upgrade your vacuum cleaner's performance with this Tineco Li-ion battery without worrying about the condition of the battery.