Check the listing for details. DHC BT5101 Digital Battery & Elecrical Analyzer and ocv voltmeter deluxe kit. Condition: Used. Listed at 250.00 USD. DHC 501 is a professional battery and electrical system analyzer with an integrated printer, manufactured by DHC, a company known for battery testing solutions. It does not refer to a standalone battery pack itself. Key Features of the DHC BT501 Analyzer Functionality: This device is used to test 6V and 12V batteries, as well as 12V and 24V charging/starting systems. Technology: It uses patented single-load, dynamic resistance technology to provide accurate results not distorted by surface charges. Measurement Range: The testing range typically covers 40 to 2,000 CCA (SAE standard). Integrated Printer: The "deluxe" aspect refers to the built-in thermal printer that provides instant results for customers or records, using specific paper rolls.