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Your cart is empty.Li-Ion Battery Level Indicator Module for LED Voltage Display Meter feature: Display power parameters: (The following data are reference values, there will be a 2% error range) (Note: N represents the number of batteries in series, such as a lithium-ion battery, N equals 1, two batteries in series N equals 2) 1. When the battery voltage exceeds Nx3.35V, 1 grid of power will be on 2. When the battery voltage exceeds Nx3.55V, it will light up 2 bars of power 3. When the battery voltage exceeds Nx3.75V, it will light up 3 bars of power 4. When the battery voltage exceeds Nx3.95V, it will light up 4 grids of power 2S battery voltage fully charged 8.4V Display: 5 LEDs Size: 1.5x4cm/0.59x1.57inch Weight: 8g Package Included: 3pcs Li-Ion Battery Level Indicator Module