Tester with Printer

1 × BM550U Battery Analyzer Host. ⚠️ Critical : Turn off the engine before connecting the tester to the car battery – running engines will cause inaccurate results. 2 × Rolls of Thermal Paper. ✅ Durable & Portable Design : Industrial-grade ABS material (drop-resistant), non-slip grip for one-handed use, and integrated wires for stable connections.