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

OLED Digital Voltmeter & Battery Level Tester — 0.5" Display, DC 0–30V, 1–6S Lithium

Monitor your lithium battery voltage and remaining capacity at a glance with this compact 0.5-inch OLED Digital Voltmeter. Designed for DIY electronics enthusiasts and makers, this mini battery meter supports 1–6S lithium battery packs and a wide operating range of 4.5–30V DC, making it one of the most versatile and plug-and-play-ready testers on the market.

Made in Mainland China.

Key Features

• High-Definition OLED Display: The 0.5-inch OLED panel with high-contrast technology delivers sharp, glare-free voltage and battery capacity readings in both bright and dim conditions — no squinting required.
• Ultra-Compact, Space-Saving Design: Built with high-strength engineering plastic in a mini ultra-thin form factor, this tester fits easily into small DIY builds and compact equipment enclosures.
• Dual Real-Time Monitoring: A built-in high-precision detection chip displays live voltage and remaining battery capacity simultaneously — no extra testing tools needed.
• Wide Compatibility (1–6S / 4.5–30V): High-tolerance components and a voltage-stabilized circuit make this meter compatible with most lithium battery packs, from single-cell (1S) to 6-cell (6S) configurations.
• Easy Plug-and-Play Installation: Pre-welded PVC-insulated copper core wires and mounting holes mean even DIY beginners can complete setup in minutes — no soldering required.

Specifications

What's in the Box

• 1× OLED Digital Voltmeter / Battery Level Tester (pre-wired)

Important Notes

• Product photos are for illustration only; refer to the specification table for exact dimensions.
• Slight color variation may occur due to monitor settings.
• Allow minor tolerances due to manual measurement.

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Frequently Asked Questions

Q: What battery types are compatible with this OLED voltmeter?

A: This digital voltmeter is compatible with 1S to 6S lithium battery packs operating within the 4.5V to 30V DC range. This covers the vast majority of lithium-ion and lithium polymer (LiPo) battery packs commonly used in DIY electronics, RC vehicles, power tools, and portable power stations.

Q: Does this voltmeter require any soldering or special tools to install?

A: No soldering is required. The unit comes with pre-welded PVC-insulated copper core wires and includes mounting holes for easy panel installation. It is designed as a plug-and-play device, making it accessible to both beginners and experienced makers.

Q: Can I read the OLED display in bright sunlight or low-light environments?

A: Yes. The 0.5-inch OLED panel uses high-contrast display technology that produces clear, non-glare readings in a wide range of lighting conditions — from bright outdoor light to dimly lit workspaces.

Q: Does this tester display both voltage and remaining battery capacity at the same time?

A: Yes. The built-in high-precision detection chip enables simultaneous real-time display of both voltage level and remaining battery capacity, so you always have a full picture of your battery's status without needing any secondary tools.

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.