OLED Digital Voltmeter Battery Tester 1-6S DC 0-30V

0.5-Inch OLED Digital Voltmeter & Battery Level Tester — DC 0–30V, 1–6S Lithium Compatible

Monitor your lithium battery voltage and remaining capacity at a glance with this compact OLED Digital Voltmeter. Featuring a crisp 0.5-inch OLED display, this tester reads real-time voltage (DC 0–30V) and battery level simultaneously, making it an essential tool for DIY electronics projects, RC vehicles, drones, and any custom battery-powered build. Supports 1S through 6S lithium battery packs — no extra adapter modules needed.

Made in Mainland China.

Key Features

• High-Definition OLED Display: 0.5-inch OLED panel with high-contrast technology delivers sharp, glare-free voltage and battery capacity readings in both bright and low-light environments — easy to read at a glance.
• Ultra-Compact & Space-Saving: Mini ultra-thin engineering plastic housing takes up minimal space, making it ideal for tight DIY builds, compact enclosures, and custom electronic modifications.
• Dual Real-Time Monitoring: Built-in high-precision detection chip displays live voltage and remaining battery capacity simultaneously — no separate test equipment required.
• Wide Voltage Compatibility: Supports 4.5–30V input and is compatible with 1S–6S lithium battery packs, covering the most common lithium configurations on the market.
• Plug-and-Play Installation: Comes with pre-welded PVC-insulated copper-core connecting wires and reserved mounting holes — quick, beginner-friendly setup in minutes.

Specifications

What's in the Box?

• 1 × OLED Digital Voltmeter / Battery Level Tester
• Pre-welded PVC-insulated copper-core connecting wires

Perfect For

• RC cars, drones, and FPV builds
• DIY power banks and custom battery packs
• Solar storage systems and portable power projects
• E-bike and electric scooter battery monitoring
• Any 1–6S lithium battery application

Looking for more handy tools for your DIY projects? Check out our 1PC 10g High Grade Silicone Grease Lubricant for O-Rings or our 1PC Large Capacity Battery Storage Organizer Box to keep your workspace organized and your components protected.

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: What battery types is this digital voltmeter compatible with?

A: This OLED voltmeter supports 1S through 6S lithium battery packs and operates across a wide voltage range of 4.5–30V DC, making it compatible with the vast majority of common lithium battery configurations used in RC vehicles, drones, DIY power packs, and more.

Q: Does it display both voltage and battery level at the same time?

A: Yes! The built-in high-precision detection chip allows the 0.5-inch OLED display to show real-time voltage readings AND remaining battery capacity simultaneously, so you always have full visibility of your battery's status without needing additional tools.

Q: Is installation difficult for beginners?

A: Not at all. The voltmeter comes with pre-welded PVC-insulated copper-core wires and features reserved mounting holes for easy panel installation. Most users — even those new to DIY electronics — can complete setup within just a few minutes.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.