1. On-board high-precision voltage detection chip and power supply voltage regulator chip
2. On-board 4-digit battery indicator LED lights are displayed in 3 colors. Red, yellow, yellow, and green represent 20%, 50%, 80%, and 100% of battery power respectively.
3, set aside battery detection interface and two installation positioning holes
4, PCB size: 22.2 (mm) x 17.2 (mm)
Shipping list:
12V battery 4-stage battery indicator x 1
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