The ams-OSRAM BATTERYtest PRO YDWD7U is a professional diagnostic tool for comprehensive testing of 12V lead-acid, EFB, AGM, GEL, and spiral batteries. This robust tester also evaluates 12V and 24V charging systems, providing accurate performance data. Featuring a clear LCD display, intuitive navigation, and an integrated printer, it delivers immediate, verifiable results. Compatible with CCA, JIS, EN, DIN, IEC, and SAE test standards, the YDWD7U is an essential tool for workshops and service centers maintaining various vehicle and machinery battery systems.