Rechargeable Battery for our popular digital oscilloscopes Aktakom ADS-2061M, ADS-2061MV, ADS-2071MV, ADS-2111MV, ADS-2121M, ADS-2121MV, ADS-2221M, ADS-2221MV and ADS-2332 series. These devices have proven to be reliable and easy to use. They are successfully used in measuring laboratories, service centers, and, of course, for education. This battery allows the use oscilloscopes as a portable devices. Battery Type – Li-ion. The oscilloscope can be operated by battery 4 hours.