DC 7–55V Battery Level Indicator | 12V 24V 36V 48V LED Tester
DC 7–55V Battery Level Indicator | 12V 24V 36V 48V LED Tester
DC 7–55V Universal Battery Level Indicator with LED Display
Monitor your battery charge status at a glance with the diymore DC 7–55V Battery Level Indicator. This compact, high-precision LED panel is compatible with ternary lithium, lithium iron phosphate (LFP), and lead-acid battery systems — making it an ideal addition to solar setups, electric bikes, scooters, golf carts, DIY power banks, and more. Made in Mainland China.
Key Features
- Wide Voltage Range: Measures DC 7–55V (red display: DC 7–40V), covering a broad range of battery configurations.
- Multi-Battery Compatibility: Supports ternary lithium (L03S–L12S), lithium iron phosphate (F03S–F14S), and lead-acid batteries (12V / 24V / 36V / 48V).
- Custom Mode: Freely configure fully charged and fully discharged voltage thresholds for non-standard battery packs.
- Low Voltage Alert: When charge drops to 10% or below, the red battery cell flashes to warn you before power runs out.
- Power-Off Memory: Retains your settings even after the unit is powered down — no need to reconfigure each time.
- Simple Button Control: Short press toggles the display on/off; hold for 2 seconds to access the settings menu.
- Digital LED Screen: Clear, easy-to-read display with high-precision accuracy readings.
- CE & RoHS Certified: Meets international safety and environmental standards.
- Ultra-Compact Design: Dimensions of just 46 × 15 × 3 mm — fits neatly into panels, enclosures, and DIY builds.
Specifications
| Voltage Measurement Range | DC 7–55V (red display: DC 7–40V) |
| Operating Current | ≤ 20mA |
| Display Type | Digital LED Screen |
| Ternary Lithium Support | L03S – L12S |
| LFP Battery Support | F03S – F14S |
| Lead-Acid Support | 12V / 24V / 36V / 48V |
| Dimensions | 46 × 15 × 3 mm |
| Certification | CE, RoHS |
| Battery Included | No |
| Country of Origin | Made in Mainland China |
What's in the Box
- Battery Level Indicator × 1
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Frequently Asked Questions
Q: What battery types are compatible with this DC 7–55V battery level indicator?
A: This battery level indicator supports three major battery chemistries: ternary lithium batteries (L03S to L12S), lithium iron phosphate / LFP batteries (F03S to F14S), and lead-acid batteries in 12V, 24V, 36V, and 48V configurations. A custom mode also lets you set your own fully charged and fully discharged voltage values for non-standard packs.
Q: Does the battery level indicator retain settings after being powered off?
A: Yes. The unit features a power-off memory retention function, so your battery type selection and custom voltage settings are saved even when the device loses power. You won't need to reconfigure it every time you reconnect.
Q: How does the low voltage alert work?
A: When the detected battery charge level reaches 10% or below, the red battery cell icon on the LED display begins to flash, providing a clear visual warning that the battery is running low and needs to be charged soon.
Q: How do I navigate the settings on this battery tester?
A: Button operation is straightforward: a short press on the button toggles the LED display on or off during normal operation. To enter the settings menu — where you can select battery type and configure voltage thresholds — press and hold the button for approximately 2 seconds.
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.