Vexcor and Bosch batteries, Dayi. The battery of Dayi A 1060 model is 7.5cm long, 8cm wide and 7.4cm high, which is completely interchangeable. The full name of lithium iron battery is lithium iron phosphate lithium ion battery, which is a kind of battery in the lithium battery family. Its cathode material is mainly lithium ferrous phosphate material, so it is also called lithium ion battery.