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Main image of DY221 Car Battery Tester, 12V 24V Digital Automotive Alternator Meter Diagnostic Tool,100-2000 CCA Load Capacity, Charging & Cranking Analyzer for Cars, Trucks, Motorcycles, Vans, RVs, Boats...

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DY221 Car Battery Tester, 12V 24V Digital Automotive Alternator Meter Diagnostic Tool,100-2000 CCA Load Capacity, Charging & Cranking Analyzer for Cars, Trucks, Motorcycles, Vans, RVs, Boats...

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Professional 12V/24V Battery Diagnostics DY221 Load battery tester Tests cranking/charging systems & CCA value (100-2000) for lead-acid batteries with Kelvin 4-wire tech. Catch issues before $500 garage bills.
Advanced Safety & Accuracy Polar reversal/over-voltage protection + loose lead detection ensures precise readings per IEC/EN61010-1 standards. like $2,000 pro tools.
User-Friendly Operation Large backlit LCD + touch-tone keys simplifies testing. Stores last results for Battery/Cranking/Charging tests. faster than brewing coffee.

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Comprehensive Vehicle Analysis Tests cranking voltage (>9.6V good), charging status (13.4-14.6V normal), and ripple voltage (<1200mV).
Essential for Auto Shops Must-have for battery sales/repair shops, mechanics, and DIYers with GB/SAE/JIS/DIN standards support.
Test ANY Battery In-Car AGM/GEL/EFB? 100-2000 CCA? Motorcycles, Passenger Cars, Vans, Off-Road Vehicles, Heavy-Duty Trucks, Buses, Cranes, Tractors, Excavators, Farm Equipment, Yachts & Boats, Street Sweepers, Loaders & More,Test under hood no wrench needed.