ANCEL BT521 12V Smart Battery Charger and Tester, 5A

Brand new, never opened. - 4-in-1 Smart Battery Care Tool — BT521 combines a 12V battery tester, 5A smart charger, pulse desulfator and maintainer in one plug-in tool, helping you check, charge, desulfate and maintain compatible lead-acid batteries with a simple care routine - Test Before You Charge or Replace — Check key battery data including SOH, SOC, CCA, voltage and internal resistance to better understand battery condition before charging, retesting or considering replacement - Find the Real Starting Problem — Built-in battery test, cranking test and charging system test help you check whether a no-start or slow-crank issue may come from the battery, starter or vehicle charging system - Smart 5A Charging with Pulse Desulfator Mode — A guided charging process helps care for everyday 12V lead-acid batteries, while pulse desulfation may help reduce sulfation in weak lead-acid batteries when recovery is possible. Maintenance mode helps keep stored batteries charged between uses Feel free to message with any questions.