Probador de batería de automóvil DY221, herramienta de diagnóstico de medidor de alternador automotriz digital de 12 V 24 V, capacidad de carga de 100-2000 CCA, analizador de carga y arranque para automóviles, camiones, motocicletas, furgonetas, vehículos recreativos, barcos...

Descripción

Product description 1. STOP GUESSING – Know Your Battery’s Fate Before You Get Stranded DUOYI DY221 12v/ 24v car battery tester tells you exactly when your battery will die before you’re stuck in the cold. Cranking test instantly predicts failure even in -20°C blizzardsReadings like 8.9V clearly signal “REPLACE IMMEDIATELY”No more surprises on cold mornings 2. Test Your Alternator in 5 Seconds Get professional-grade results in just 5 seconds at 2500 RPM. Readings under 13.0V mean a failing alternator, saving you $500+ on costly repairsFast, accurate checks keep your charging system reliable 3. Lab-Grade Accuracy with 4-Wire Kelvin Tech Reveal hidden battery damage that cheap testers miss. Tests all battery types: AGM, GEL, EFBDisplays critical data: SOH, SOC, internal resistance, and rated CCASpot weak batteries before they fail 4. No Sparks, No Stress – Built-In Safety Our tester keeps you safe even if you mix up the leads. Reverse polarity protection prevents sparks and damageUnlike other testers that risk your battery and your safetyOver-voltage shield handles 9-36V input with confidence 5. 7 Languages – Ready for North America Designed for every shop in North America and beyond. Supports English, Español, Français, Português, Italiano, Deutsch, and РусскийPerfect for garages, shops, and techs across the continent Key Specs At A Glance Works with 12V/24V systemsTests 100-2000 CCA batteriesOperating range: -20°C to 65°C5-second quick tests, no battery removal neededCAT III 600V certified safety Why Buyers Love Us: “Diagnosed my truck’s hidden battery drain while the mechanic wanted $120 just for testing!”– Mike T.

Características

• Professional 12V/24V Battery Diagnostics​​ ➤ DUOYI 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.
• ​​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.

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