DC7‑40V Battery Level Indicator & Voltage Tester
Measure the health of your 12V, 24V, 36V, or 48V batteries—whether they’re lead‑acid, Li‑Po, or lithium—at a glance. The DC7‑40V Battery Level Indicator is a compact, high‑precision board that displays real‑time voltage and capacity, making it an essential tool for hobbyists, EV owners, and industrial power systems.
Key Highlights
- Wide Voltage Range: Supports 12V, 24V, 36V, and 48V battery packs.
- Dual Mode Display: Shows both voltage (V) and capacity (Ah) for accurate monitoring.
- High Accuracy: ±0.5% measurement precision with a 0.1V resolution.
- Easy Installation: Plug‑and‑play design with standard 2.5mm or 4.5mm connectors.
- Durable Build: Shock‑resistant housing and a 2‑year warranty for peace of mind.
- Multi‑Battery Compatibility: Works with lead‑acid, Li‑Po, and lithium‑ion batteries.
- Low Power Consumption: Ideal for portable and embedded applications.
Technical Specifications
Voltage Input: 0–40V DC
Current Input: 0–5A
Display: 4‑digit LED with backlight
Power Supply: 5V USB or 12V DC
Dimensions: 50mm × 30mm × 20mm
Weight: 45g
Applications
Perfect for electric vehicles, solar battery banks, RC hobbyists, and industrial power backups. Use it to monitor battery health during charging, discharging, or idle periods, and to prevent over‑discharge or over‑charge conditions.
Why Choose the DC7‑40V Indicator?
With its reliable accuracy, versatile voltage support, and intuitive design, this battery level indicator empowers you to keep your power systems running smoothly. Whether you’re a DIY enthusiast or a professional engineer, the DC7‑40V is the smart choice for real‑time battery monitoring.
Price: Original price was: $ 5.96.$ 2.74Current price is: $ 2.74.

