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🔋 Power up your life with confidence — never get caught powerless again!
The Dlyfull Battery Tester is a compact, versatile device designed to quickly and accurately test over a dozen types of household and button cell batteries. Featuring a crisp LCD screen, it clearly indicates battery health status (Poor, Weak, Good) within seconds. Lightweight and pocket-friendly, it helps professionals and tech-savvy users optimize battery usage, save money, and reduce waste with reliable voltage readings on the go.










| ASIN | B07DPLD6KB |
| Best Sellers Rank | #3,748 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #679 in Electrical Equipment |
| Brand | DLYFULL |
| Brand Name | DLYFULL |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 12,332 Reviews |
| Included Components | 1*B2 Battery Tester; 1*AAA Alkaline Batteries; Welcome Guide |
| Item Dimensions | 5.2 x 3.46 x 0.94 inches |
| Item Highlight | LCD Display Universal Battery Checker for CR2032 CR123A CR2 CRV3 2CR5 CRP2, 1x AAA Batteries Included |
| Item Weight | 115 g |
| Item dimensions L x W x H | 5.2 x 3.46 x 0.94 inches |
| Manufacturer | DLYFULL |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 1.5 volts |
| Model | B2 |
| Number of Items | 1 |
| Part Number | B2 |
| Power Source | Battery Powered |
| Specification Met | CE, FCC, RoHS |
| Style | Voltmeter |
| Style Name | Voltmeter |
| UPC | 742354203354 742354312971 |
| Unit Count | 1 Count |
B**.
Quick and Accurate Battery Checker
Hello! I've been using this battery tester for about a month, and it works really well. It was very easy to set up. Just take it out of the box, put in the included battery, and it's ready to use. To test a battery, just place it in the tester, and the screen instantly tells you if it's Poor, Weak, or Good (Excellent). The display is easy to read, and you get the results right away. I've used it on several different types of batteries, including rechargeable ones, and it has worked great every time. I've also compared this battery tester with another one just to check its accuracy, and the results were the same. It appears to be very accurate. Overall, this is a simple, useful tool that does exactly what it's supposed to do. I'm pretty happy with my purchase!
F**K
Test your batteries that are no longer in a package to determine the statecharge
Works very well had several different types of batteries laying around didn't know if they were good or bad. I went through and sorted them and very quickly out found out if they were good or bad. Seems like a good value for the money as I would have typically just throwing the batteries away since I didn't know if I could trust them or not. It holds or tests many types of batteries which is nice. It is compact and handheld and is very practical seems pretty durable too.
A**R
It’s worth the money
It works as advertised. So easy to use and test every battery.
J**L
Does the job it is expected to do
It seems easy enough to use. Markings for + and - and for the various button cell batteries are not so easy to read. Not sure why it must have a battery itself to work. Bottom line, it gets the job done.
R**I
Quick battery tester
It works great. The last one I purchased was a cheap manual battery tester that if you didn’t put the battery in just right it didn’t give always give the correct results. This one operates with batteries making testing your batteries quick and easy.
F**Y
Very user friendly.
Works perfectly and covers just about every battery I use.
M**S
Universal it is
After a recent move, my small battery tester gave up the ghost. I find these things to be very useful and being without one while decorating for Christmas was not optimal. For my battery-operated lights, I had to go through my battery drawer pulling out batteries and trying to find combinations (the lights require two or three AA each) that would work. Sometimes one of two batteries would be ok. Sometimes one of three was bad and prevented the other two from powering the lights. In fact, it was so tedious I went out and bought a giant pack of AA batteries at the local hardware store. When this device came in I immediately went back to the battery drawer and tested all of the remaining ones. Several had to be discarded because of either no charge or borderline. I've found that LEDs do not like batteries that do not deliver the full charge and all my Christmas lights are LEDs. As a plus, I had a bunch of older button batteries that, surprisingly, still hold a very good charge. I was thinking of pitching them, but now all I have to do is figure out what device I put them in. What I like about this device is that it tests a very wide range of batteries: your usual-suspect C, D, AA, AAA, and 9v of course. Also most 1.5v button batteries and even 3v button batteries; though larger ones like a CR2450 won't fit into one of the button sockets on the tester, you can check them by holding against the contacts on the 3v button slot. It also tests a range of the 3v cylindrical batteries used in my home security system. Nice. It even comes with a AAA battery to power the tester. Also nice. All-in-all a fine little device and well worth getting
P**L
A tester well worth its cost and seems to be very accurate. Improvement over other types.
A great tester that provides numerous battery types in a compact package. It handles The normal 9V, AAA, AA, C, D as well as the normal (1.5V and 3V button/coin) batteries. It is a little confusing that it has prominent placement of two slots that are only for double cell camera types of batteries 2CR5/CR-P2 and CR-V3 and can be accidentally used for the button/coin batteries. Although the LCD is bright and clear and has enough actual markings to obtain a pretty precise reading, the markings that show which batteries go where are super tiny and not easily read. Bottom line is that this tester is a vast improvement over the testers that it is replacing (the one where you depress a spring in the slot or slide the two halves together.
ケ**ー
乾電池の容量確認に便利
以前に買ったものが寿命で液晶が点かなくなり買い換えました。 乾電池の容量が簡単に確認できるので便利です。
D**R
It Does the Job!
It does the job. Seems good value for money.
M**Y
Good product, A superb little unit, so easy to use
A superb little unit, so easy to use. Tells you exactly how much charge is left in the battery in seconds, Test all the batteries you have, even those little awkward watch and clock batteries.
に**丸
良かったです
とっても使いやすい商品で満足しています。強いて言えば、電池の残量の数字が表示されれば嬉しいのですが、この価格では無理だろうと思いました。大切に使いたいと思います。
J**S
It works well
Extremely useful item
Trustpilot
1 day ago
1 month ago