Features: Digital Battery Checker for detecting battery status, battery type: Li Ion, Li Po, Li Fe, Ni Cd, NiMH. Total voltage, min cell voltage, max cell voltage, total cell battery capacity display, etc. LCD backlight, thevalue is clear and easy to read. Lithium battery type (Li Po, Li Ion, Li Fe). CellMeter 8 can support 2S-8S without additional power supply. Test 1S lithium battery, you need to connect a nickel battery larger than 3S or UBEC 5V to the NiCd/MH port to provide working power for the CellMeter 8. Nickel battery type (NiCd or NiMH). CellMeter 8 can support 4S-8S without additional power supply. If nickel less than 4S needs to be tested. The 2-8S lithium battery needs to be connected to the Lithium port to provide working power for the CellMeter 8. If there are any problems, please contact our store in time. Specification: Name: Digital Battery Checker Main Material: ABS Size: 90*58*21mm Package Size: 10*7*3cm Package Weight: 68g Package List: 1* Digital Battery Checker 1* User Manual