About This

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.

Overview

Brand : DUOYI
Power Source : Corded Electric
Item dimensions L x W x H : 6.7 x 1.4 x 3.6 inches
Min. Operating Voltage : 9 Volts (DC)
Specification Met : Iec/En61010-1, Cat III 600v

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.