Note: Stenhoj is a brand known for professional battery chargers and testers, particularly for lead-acid batteries in automotive, marine, and industrial settings. The DS2 is a specific model variant. If you have a different device (e.g., a diagnostic tool or industrial sensor), please verify the brand and model number. 1. Product Identification The Stenhoj DS2 is typically a microprocessor-controlled battery charger and tester designed for 12V and 24V lead-acid batteries (Wet, Gel, AGM, EFB, Calcium). It is used in professional workshops and by serious DIY users for charging, maintenance, and diagnostics.