7S 20A 50A Bluetooth BMS 7S LED Indicator 18650 Battery holder BMS DIY 7s Battery Indicator for 7S Power Wall

The P3 Kill A Watt EZ is an easy-to-use consumer power meter allowing the user to accurately measure power consumption of household appliances and to determine the actual cost of power consumed. The unit will also project, in real time, the cost of continued use of the appliance in time periods of hour, day, week, month and year. It features a precise circuit which provides very accurate results. Voltage and current are measured using true RMS methods. Total consumed power is displayed in Kilowatt-hours.