--- product_id: 158293709 title: "Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More" brand: "x-cosrack" price: "£0.99" currency: GBP in_stock: false reviews_count: 13 url: https://www.desertcart.co.uk/products/158293709-universal-battery-checker-tester-with-leads-lcd-display-battery-capacity store_origin: GB region: United Kingdom --- # Compatible with 20+ battery types Displays capacity %, voltage & resistance Tests 1.2V to 12V batteries Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More **Brand:** x-cosrack **Price:** £0.99 **Availability:** ❌ Out of Stock ## Summary > 🔋 Power up your battery IQ — never get caught powerless again! ## Quick Answers - **What is this?** Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More by x-cosrack - **How much does it cost?** £0.99 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/158293709-universal-battery-checker-tester-with-leads-lcd-display-battery-capacity) ## Best For - x-cosrack enthusiasts ## Why This Product - Trusted x-cosrack brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Portable & Durable:** Compact, lightweight design built for on-the-go pros and home tech enthusiasts. - • **Effortless Operation:** No battery slots—just select voltage, connect leads, and get results fast. - • **Precision LCD Display:** Instantly read battery health with clear voltage, capacity & resistance metrics. - • **Multi-Function Testing:** More than a tester—voltage, capacity %, and internal resistance in one device. - • **Universal Battery Compatibility:** From AAA to 32650 & button cells, one tester rules them all. ## Overview The X-cosrack Universal Battery Checker Tester is a versatile handheld device designed to test a wide range of batteries from 1.2V to 12V, including AAA, AA, C, D, 9V, Li-ion, and button cells. Featuring a crisp LCD display, it provides precise readings of battery capacity percentage, voltage, and internal resistance, enabling users to assess battery health accurately. Its easy-to-use rotary switch and lead probes eliminate the need for battery slots, making testing quick and convenient. Powered by 2 AAA batteries (not included), this compact tester is ideal for professionals and tech-savvy users who demand reliable, multi-functional battery diagnostics. ## Description Product description Easy to use X-cosrack home battery checker tester applies supperior copper and adjustable leads ensures the accuracy of test. It can not only used as battery capacity percentage detector, but also used as voltage and battery internal resistance meter,like simple multimeter, but it's easier to operate and cheaper than multi-meter. Capacity percentage indicates battery power is high or low. Resistance reflects whether battery quality is good or no. Check Your Battery' s Health This versatile tester can help you know your batteries' health clearly. Having good batteries is important for you to DIY battery pack. Determine if it'’ s your toys or devices that no longer work or if it's your batteries. Feature Large clear LCD display Compatible with all home standard and rechargeable batteries Easy to operate with adjustable copper leads Small size, portable handheld tester Powered by 2x AAA battery( battery not included) Certificated by CE/RoHS/FCC Package including 1x Dlyfull battery checker tester with leads 1x User Manual DETAILS Function knob Fixed Gold plating test lead High Compatibility, One Tester is Enough. Work with a. 1.2V Ni-MH Cylindrical Batteries: AAAA, AAA, AA, A, C, SC, D b. 1.4V Zinc air battery: A10, A13, A312, A675 c. 1.5V alkaline cylindrical batteries: AAA, AA, C, SC, D d. 1.5V alkaline button cell: LR621(AG1), LR726(AG2), LR41(AG3), LR626(AG4), LR754(AG5) LR921(AG6), LR927(AG7), LR1120(AG8), LR936(AG9), LR1130(AG10), LR721(AG11), LR43(AG12), LR44(AG13) e. 3.0V lithium manganese button cell: CR1025, CR1216, CR1220, CR1616, CR1620, CR2016, CR2025, CR2032, CR2320, CR2430, CR2450 f. 3.0V lithium manganese column battery: CR123A, CR2 g. 6.0V lithium manganese battery pack: 2CR5, CR-P2 h. 3.2V lithium iron phosphate battery: 10440,14500,14650,16340, 17335, 17500,18500, 18650, 26500, 22650, 26650, 32650 i. 3.7V lithium-ion battery: 10440, 14500, 14650, 16340, 17335, 17500, 18500, 18650, 26500, 22650, 26650, 32650, 3271 j. 9.0V alkaline 9.0V battery: 6LR61 k. 12.0V alkaline batteries: 23A, 27A Review: Quality device. Would definitely recommend! - This will definitely be my "Go To" Battery Tester, for all of my household type batteries from now on! It's the one and only one that I've found that actually displays useful information about the state of the battery under test. This tester requires 2 AAA Type batteries ( not included ). I opted to insert Energizer Ultimate Lithium's. With these batteries, the display is crisp, and very easy to read. No back-light in the LCD type display, but who's going to be testing batteries in the dark? Please be advised that the user needs to know that this tester is designed to be "voltage & battery type" specific. The 11 position rotary switch MUST be set to the correct voltage & battery type before performing the battery test. When switched to the appropriate battery V&T, the display capacity indicator sweeps from 100%, to 0% after a slight delay. I'm assuming that this is a sort of boot-up / self test. VERY COOL! At this point, use the spring loaded probes to press against the + (red) and - (black) battery terminals. After a couple of seconds, the display will indicate the battery Voltage, Resistance, and Capacity. If no test is performed within about 1 minute after power-up, the tester will turn itself off. Another outstanding feature of this tester is that it displays the status of the internal battery voltage in the upper right corner of the display (after being turned on). This tester has come in handy for me, because I was able to recover about 5% of a large number of batteries that I had tossed into a box for a future trip to the waste collection folks. Turns out that these 5% were still usable ... indicating 80% or greater capacity, and a good amount of voltage left. The only negative that I can mention about this tester is that the Battery Door was VERY DIFFICULT to open. I had to get a small screw driver, and gently pry on it while sliding it out of position. The "hook" in the center of the battery door is just a bit too high, and doesn't want to release when the door is snapped into place. I corrected this problem on mine by gently sanding the plastic tab down a bit. It releases much easier now. My personal conclusion is that this is an EXCELLENT and QUALITY MADE Battery Tester! Maybe a bit on the expensive side, but would definitely recommend! Review: Good tester. - This battery tester works quite well. It accurately tells the battery's power level, not just good, bad, or needs replaced like some testers do. The price isn't bad for the item. It is pretty well built also. It has an electronic display and takes batteries. It tells the % of battery power left from 0 to 100%. It can test about any type of battery. ## Features - HIGH COMPATIBILITY: This digital battery tester fit for all common batteries from small to large- 1.2V 1.5V NIMH Alkalilne AAAA, AAA, AA, A, C, SC, D battery 9V (6LR61/LR61) battery, 3.7V 3.2V 3.0V Li-ion LiFePO4 Lithium 10440, 16340(123A), CR2, 18650, 26650, 32650 etc, CRV3, 2CR5, 1.5V 3.0V Lithium alkaline button cell, 1.5V hearing aid batteries A13 A10, A675, A312, 3.0V various Lithium button cell (CR2032 CR2025 CR2016 CR1025 etc); 1.5V various alkaline primary button cell (AG1 AG10 AG13 AG11 etc), perfect household battery tester for all kinds of primary batteries and rechargeable batteries. - CLEAR LCD SCREEN: Easy to read the state of your battery, it will analyze whether your battery is good or not or whether they need to be charged; compact and lightweight tool, portable handheld tester. - MULTI-FUNCTIONAL TESTER: This battery checker tester can not only detect battery capacity percentage level precisely, but measure the voltage and internal resistance of household battery, equal to simple multimeter. Capacity percentage indicates battery power is high or low, and resistance reflects whether battery quality is good or not, smaller resistance, better battery. - EASY TO USE: Just switch corresponding voltage and use leads to test, no need to insert battery into slot; the digital tester will quickly show the status of your batteries’ health, helps to avoid battery damage from overcharging. POWERED by 2 NON-RECHARGEABLE AAA ALKALINE BATTERIES. - TIPS: What you get is a universal battery checker tester (2 AAA batteries not included). If you have any questions, don't hesitate to contact us. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07WS7HR31 | | Best Sellers Rank | #482,095 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #50,719 in Electrical Equipment | | Brand | X-cosrack | | Brand Name | X-cosrack | | Color | Black | | Customer Reviews | 4.4 out of 5 stars 1,004 Reviews | | Item Dimensions | 2.98 x 5.4 x 1.1 inches | | Item dimensions L x W x H | 2.98 x 5.4 x 1.1 inches | | Manufacturer | X-cosrack | | Measurement Type | Multimeter | | Model | M-BTB3-US | | Part Number | M-BTB3-US | | Power Source | Battery Powered | | Style | B3 | | Style Name | B3 | | UPC | 194358026420 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** X-cosrack - **Color:** Black - **Item dimensions L x W x H:** 2.98 x 5.4 x 1.1 inches - **Power Source:** Battery Powered - **Style:** B3 ## Images ![Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More - Image 1](https://m.media-amazon.com/images/I/71-9B5GLajL.jpg) ![Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More - Image 2](https://m.media-amazon.com/images/I/710pFSvCzKL.jpg) ![Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More - Image 3](https://m.media-amazon.com/images/I/711tno70JbL.jpg) ![Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More - Image 4](https://m.media-amazon.com/images/I/71h7EAEGQJL.jpg) ![Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More - Image 5](https://m.media-amazon.com/images/I/715eJ96AMdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality device. Would definitely recommend! *by S***N on March 31, 2020* This will definitely be my "Go To" Battery Tester, for all of my household type batteries from now on! It's the one and only one that I've found that actually displays useful information about the state of the battery under test. This tester requires 2 AAA Type batteries ( not included ). I opted to insert Energizer Ultimate Lithium's. With these batteries, the display is crisp, and very easy to read. No back-light in the LCD type display, but who's going to be testing batteries in the dark? Please be advised that the user needs to know that this tester is designed to be "voltage & battery type" specific. The 11 position rotary switch MUST be set to the correct voltage & battery type before performing the battery test. When switched to the appropriate battery V&T, the display capacity indicator sweeps from 100%, to 0% after a slight delay. I'm assuming that this is a sort of boot-up / self test. VERY COOL! At this point, use the spring loaded probes to press against the + (red) and - (black) battery terminals. After a couple of seconds, the display will indicate the battery Voltage, Resistance, and Capacity. If no test is performed within about 1 minute after power-up, the tester will turn itself off. Another outstanding feature of this tester is that it displays the status of the internal battery voltage in the upper right corner of the display (after being turned on). This tester has come in handy for me, because I was able to recover about 5% of a large number of batteries that I had tossed into a box for a future trip to the waste collection folks. Turns out that these 5% were still usable ... indicating 80% or greater capacity, and a good amount of voltage left. The only negative that I can mention about this tester is that the Battery Door was VERY DIFFICULT to open. I had to get a small screw driver, and gently pry on it while sliding it out of position. The "hook" in the center of the battery door is just a bit too high, and doesn't want to release when the door is snapped into place. I corrected this problem on mine by gently sanding the plastic tab down a bit. It releases much easier now. My personal conclusion is that this is an EXCELLENT and QUALITY MADE Battery Tester! Maybe a bit on the expensive side, but would definitely recommend! ### ⭐⭐⭐⭐⭐ Good tester. *by D***R on March 24, 2025* This battery tester works quite well. It accurately tells the battery's power level, not just good, bad, or needs replaced like some testers do. The price isn't bad for the item. It is pretty well built also. It has an electronic display and takes batteries. It tells the % of battery power left from 0 to 100%. It can test about any type of battery. ### ⭐⭐⭐⭐ Most Informative meter *by D***S on December 19, 2023* First, this meter is designed to test mostly individual cells. It is accurate. It gives a better indicatio of the battery's health than most other testers. The attached test probes are much above average. The spring loaded gold-plated probe tips are pogo-pins with multiple pyramidal tips for excellent contact and consistent readings. The test lead wires are less flexible than I would like. The individual test probes are handy if you store your batteries in organizers that allow access to the battery contacts, but they are otherwise awkward. Good luck testing button cells. Some kind of holder built into the case would be welcome.The manual is difficult to undrestand. This instrument present several indications of a battery's health. It seems to report the open circuit (unloaded) voltage which is what a multimeter would measure. The open circuit voltage alone is not a very good indicator of the battery's state. While alkaline batteries have a gradual decline in voltage with use, other chemistries do not. For example, lithium cells have a very slight decline followed by a precipitous drop. All batteries Have a lower voltage output under load (when they are supplying current). So, the open-cicrcuit voltage may look good, but they won't run your device.. Many testers measure the battery's voltage under somel sort of load to get a better estimate of capacity.. This meter displays the battery resistance, which is the reduction in voltage divided by the change in load current. The resistance becomes higher with use. The meter uses the unloaded voltage, the measured resistance, and assumptions of other factors related to battery type and typical load requirements to estimate the remaining battery capacity. Obviously this can only be a guess of how the battery will perform for you, but it's better than other testers. You need to account for the load's characteristics. For example, does it draw high current? You must use the information from this meter --more than you get from most battery testers--together with your knowledge and experience to decide if you need to discard or charge--if appropiiate-- the battery. On another note, cells that have been in use will often have widely differing meter readings among rhe set. This is not a fault of the instrument. Cells are not made equal; they have slightly different discharge characteristics. Cells in battery packs influence each other as they discharg, resulting in differing discharge rates between individual cells. . Cells that are connected in series can even try to charge the cell that runs out of capacity first, backward! For best results, batteries should always be replaced as a set. ## Frequently Bought Together - Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More - Gardner Bender GBT-500A Analog 1.5 V Button Cell/22.5 Photo/AA/AAA/12 V/9 V/Lantern Cells & More, Leads Battery Tester,14 Battery Range, Black - La Crosse 911-65557-INT Portable Digital Battery Tester,Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/158293709-universal-battery-checker-tester-with-leads-lcd-display-battery-capacity](https://www.desertcart.co.uk/products/158293709-universal-battery-checker-tester-with-leads-lcd-display-battery-capacity) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-29*