The LR1120 battery is a family battery of non-rechargeable alkaline button cell batteries with sizes equivalent in silver oxide but of lower voltage since this one has 1.5 volts and the battery of the Same size in silver oxide has a voltage of 1.55V. It is the alkaline button cell model with greater use and with the largest number of electronic devices, given its capacity and size is very versatile Its use is widespread for electronic devices with low energy demand such as calculators, cheap watches, laser pointers and small electronic devices, remote controls and security systems, toys, remote controls, etc.