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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
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Description
DUOYI DY219A Car 12V / 24V Digital Battery Analyzer Fault Diagnostic Device, DY219A1. This battery tester is used for lead acid starting battery, along with checking the following conditions of the battery, starting up, charging, and loading. 2. With great design, easy operation, precise reading, complete functions, this tester supply the readings by a large LCD and hints by sound and light when testing. 3. It utillizes 4 wire Kelvin method to complete collection of a series of complicated data for calculating every testing data
1. This battery tester is used for lead-acid starting battery, along with checking the following conditions of the battery, starting up, charging, and loading.2. With great design, easy operation, precise reading, complete functions, this tester supply the readings by a large LCD and hints by sound and light when testing.
3. It utillizes 4-wire Kelvin method to complete collection of a series of complicated data for calculating every testing data with build-in precise circuit and improved digital processor.
4. With polar reversal protection, over voltage input protection, loose lead detection, ensure safety and convenience during testing.
5. This is a good tool in the fields of battery sales, vehicle repair and battery inspection in equipment system associated with lead-acid starting battery.
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
4.9 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
strong magnet
Style: 15W Charger
This procuts magnet is really strong. would hold a tablet but I don't recommend that. works just fine with my samsung Tab phone that is larger than most iphones.
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Reviewed in the United States on March 21, 2026
★★★★★ 1
Cheap, easily breakable, and barley works
Style: 15W Charger, Style: 15W Charger
First off, it didn’t even come with the charging chord, so I had to order another separately after it came. The product broke the fourth time i used it, the whole thing came apart when i tried taking my phone off. When it was working, it charged maybe 1% every hour. Definitely not the best choice in the category, look at other options
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Reviewed in the United States on May 21, 2025
★★★★★ 5
Super stable, strong magnet, fast, charging Tesla screen mount
Style: 15W Charger
This is a great item. It’s adjustable annd attaches firmly and no tape no adhesive. I’ve been using it for several weeks now charges the phone very fast.. The phone has never fallen off of it. Not even close. Highly recommend this item.
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Reviewed in the United States on August 20, 2025
★★★★★ 4
Works great, but included cable is too short
Style: 15W Charger
The cable included is only about 3 feet long and has a USB-a plug. Teslas now have only USB-c outlets, so the cable is useless anyway. If the cable were 6’ long and type USB-c, it could be tucked under the molding and hidden. I had to get another cable to complete the installation. I like this mount/charger because it is nondestructive - it doesn’t use tape or glue to install. The magnet is strong and it charges my phone quickly.
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Reviewed in the United States on September 2, 2024
★★★★★ 3
Decent but magnet isn’t strong enough
Style: 15W Charger
Unit appears well made and I feel like it minimizes any potential damage to the screen. For me, magnet just wasn’t strong enough and I wasn’t a fan of the cable - would be nice if product had clips for cable management or something to give it a cleaner install. If it wasn’t for the magnet issue, I probably would have kept. Returned.
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Reviewed in the United States on March 24, 2026