Battery Meter Battery Capacity Voltage Monitor, DC Gauge Indicator

Feature Highlights: 1. Clear Battery Monitoring – This battery gauge shows both a bar graph and exact voltage reading, so you always know how much power is left and when it’s time to recharge. 2. Low Battery Alert – Flashes to warn you when battery capacity drops below 20%, helping avoid unexpected power loss. 3. Wide Battery Compatibility – Works with ternary lithium, polymer lithium-ion, 3‑series lithium ion, lead‑acid, and water batteries. (Note: Not suitable for lithium iron phosphate batteries, 1‑2 li‑ion cells in series, or over 15 li‑ion cells in series.) 4. Sleep Mode & Easy‑Read Display – Auto‑off after 10 seconds or always‑on display option. Blue backlit LCD is clear in any light, unlike hard‑to‑read red displays in sunlight. Built‑in reverse polarity protection. 5. Simple Installation & Versatile Use – Compact design with covered rear. Just connect the red wire to positive and black to negative. Ideal for golf carts, boats, cars, RVs, motorcycles, and more. Product Details: This battery capacity voltage meter lets you track power levels accurately with a dual display (bar + voltage). It alerts you when charge falls below 20%, supports multiple battery types, and features a sunlight‑readable blue backlit screen. With sleep mode and reverse protection, it’s safe and energy‑efficient. Wiring is straightforward—only two connections needed. Perfect for vehicles, marine use, RVs, and portable power systems. Specifications: - Voltage Display Range: 9‑100V - Working Current: <5mA - Sleep Mode Current: 12µA (tested at 12V) - Operating Temperature: -10 ℃ to 50 ℃ - Compatible Batteries: – Acid Battery (DC 12/24/36/48/60/72/84V) – Lithium battery (3 ~ 24 series) – Lithium iron phosphate battery (4 ~ 26 series) - Color: Black - Material: ABS Package Includes: 4 × Battery Capacity Voltmeter (Blue Backlight) 4 × 2‑Pin Wires (Red & Black) Notes: 1. The setting button is on the back—please configure the meter before installation. 2. Operating environment is -10°C to 50°C; temperatures above 50°C may shorten LCD lifespan. 3. Only the items listed above are included. 4. Slight color variations may occur due to lighting or screen differences. 5. Allowable measurement tolerance: ±1‑3 cm.