0.5 inch OLED Voltmeter Battery Capacity Indicator Ultra Thin DC 0-30V Digital Voltage Meter 1-6S with Percentage Display

0.5 inch OLED Voltmeter Battery Capacity Indicator Ultra Thin DC 0-30V Digital Voltage Meter 1-6S with Percentage Display for DIYFeatures1. Ultra-thin, compact design that easily fits into various compact devices2. 0.5-inch high-definition OLED screen, clearly visible even in bright sunlight3. Compatible with 1-6S lithium-ion battery systems; no voltage regulation required; protected against reverse polarity4. Smart percentage battery level display for real-time monitoring of remaining runtime5. Dual-mode digital display for voltage and battery level, with accuracy up to ±0.1%Product DescriptionThis voltage and battery level meter features a 0.5-inch OLED display, a high-speed MCU, high-precision 12-bit ADC sampling, and a stainless steel housing. With a compact size and a thickness of just 3.8 mm, it is both practical and aesthetically pleasing. The meter displays a single voltage value and calculates the remaining battery percentage based on the battery voltage.ParameterOperating Voltage: 4.5–30 VMeasuring Voltage: 0–30 VOperating Current: ≈10 mAMeasurement Accuracy: ±0.1 VSampling Rate: ≈250 times/sThis meter can measure voltages from 0 to 30 V in real time; however, the battery percentage must be set according to the number of battery cells in series, otherwise the percentage display will be relatively inaccurate.How to Set the Number of Battery CellsUse tweezers to short-circuit the cell count setting pad to the negative terminal for two seconds (similar to a long press), and hold for about 3 seconds. The “STD” characters on the right side of the screen will begin to flash, indicating that you have entered cell count setting mode. Then, briefly short-circuit the cell count setting pad to the negative terminal to cycle through 1 to 6 cells. (The number displayed in the box corresponds to the number of battery strings.) After 5 seconds of inactivity, the system automatically saves the settings and exits setup mode.Package includeVoltage and Battery Level Meter *1