Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours ยท Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
DUOYI DY222 Car 12V / 24V Battery Tester, DY2221. The battery tester is designed for testing the conditions of the 12V & 24V lead acid starting battery, cranking system and charging system. 2. It comes with a large 3. 2 inch color LCD screen and it supports classic touch tone to help you read and operate more efficiently. 3. It utilizes 4 wire Kelvin method to complete the collection of a series of complicated data for calculating every testing data with a build in precise circuit and improved
1. The battery tester is designed for testing the conditions of the 12V & 24V lead-acid starting battery, cranking system and charging system.2. It comes with a large 3.2-inch color LCD screen and it supports classic touch-tone to help you read and operate more efficiently.
3. It utilizes 4-wire Kelvin method to complete the collection of a series of complicated data for calculating every testing data with a build-in precise circuit and improved digital processor.
4. Moreover, some circuit improvements including polar reversal protection, over-voltage input protection, and loose lead detection. ensure safety and convenience during testing.
5. Supported15 Languages: Chinese, English, Deutsch, Italiano, Le Francais, Espanol, Portugues, Magyar, Polski, Slovenskeho, Cesky, Pyccknn, Nederlands, Svenska, Japanese.
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Based on 1255 reviews
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Product Reviews
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5
very good wire for marine applications.
Size: 60ft, Style: 14 Gauge
Great stuff for wiring up a marine system. I like the gauge of the wires, how they are shielded and very sturdy. They deliver the power to the speakers well and I have had zero issue with them. I would definitely purchase again. The wires were easy to solder and are color coded black and red. I used nearly the full 100ft spool to wire up 4 8" speakers on a 24 ft Skeeter Sx240. I feel the price was competitive and having delivery to the house is a plus. I didnt have any problems stripping the wires, very easy.
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Reviewed in the United States on December 29, 2025
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5
Worked great for boat install
Size: 30ft, Style: 10 Gauge
Bought this to run some accessories on my boat. Worked great and well made. Flexible even with the coating. Made for easy work and should last. I wouldnโt hesitate to buy again if needed.
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Reviewed in the United States on January 19, 2026
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5
High Quality Durable and Easy to Use
Size: 100ft, Style: 14 Gauge
This marine-grade wire is exactly what I needed for my boat's electrical setup The tinned copper construction ensures excellent conductivity and corrosion resistance making it perfect for marine automotive RV and solar applications
The PVC insulation is thick and durable providing extra protection against moisture and wear The wire is flexible yet strong making it easy to route through tight spaces without breaking or kinking
This product offers great value for money excellent functionality and is easy to use If you need reliable waterproof and corrosion-resistant wiring for your boat or RV this is a fantastic choice Highly recommend
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Reviewed in the United States on January 31, 2025
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5
Sturdy and works great
Size: 15ft, Style: 8 Gauge
Used this for an approximately 8' run in my electric UTV to power a 2500W inverter running off the 48V batteries so I could power AC tools out in the field. Very thick casing and nice and strong, but flexible enough to route around the frame of the UTV.
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Reviewed in the United States on December 17, 2025
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5
good quality
Size: 15ft, Style: 8 Gauge
good deal
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Reviewed in the United States on May 7, 2026