--- product_id: 39741595 title: "Unitec 74274 Battery Hydrometer Hydro Volts" brand: "unitec" price: "AR$171092" currency: ARS in_stock: true reviews_count: 8 category: "Unitec" url: https://www.desertcart.com.ar/products/39741595-unitec-74274-battery-hydrometer-hydro-volts store_origin: AR region: Argentina --- # Accurate acid density & charge state measurement Precision scale with 360Β° rotatable display Hydrostatic barrier prevents leaks & air traps Unitec 74274 Battery Hydrometer Hydro Volts **Brand:** unitec **Price:** AR$171092 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Master Your Battery Health with Precision and Confidence! ## Quick Answers - **What is this?** Unitec 74274 Battery Hydrometer Hydro Volts by unitec - **How much does it cost?** AR$171092 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/39741595-unitec-74274-battery-hydrometer-hydro-volts) ## Best For - unitec enthusiasts ## Why This Product - Trusted unitec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Leak-Proof Design:** Innovative hydrostatic barrier guarantees no spills or air bubbles disrupt your test. - β€’ **Effortless Operation:** Elastic suction bulb fills quickly and smoothly, eliminating annoying tapping. - β€’ **360Β° Rotatable Scale:** Read measurements from any angle without awkward positioning or guesswork. - β€’ **Precision You Can Trust:** Large, easy-to-read scale ensures exact battery acid readings every time. - β€’ **Durable German Engineering:** Built to last with premium materials, delivering years of reliable performance. ## Overview The Unitec 74274 Battery Hydrometer Hydro Volts is a precision German-made tool designed for lead-acid batteries. Featuring a large, rotatable scale and a hydrostatic barrier to prevent leaks and air bubbles, it delivers highly accurate acid density and charge state measurements. Durable and easy to use, it’s trusted by professionals for consistent, long-term battery maintenance. ## Description Unitec 74274 battery acid tester Hydrovolt, measuring device for acidity. Checks state of charge and acid density of all lead-acid batteries. Large, precisely readable scale, suction ball at all temperatures elastic and functional. Hydrostatic barrier automatically prevents any leakage and trapping of air. The twin measuring device on which the scale is mounted, is 360Β° rotatable, measuring instrument does not have to be held vertically. Intake system prevents blistering annoying tapping no longer necessary. Precision equipment.Made in Germany. Contents Review: Most consistently Accurate - Not delicate as other glass cubes testers. Compact. 1 full squeeze of the bulb and the chamber is full, I always fill it twice as I feel it is more accurate. Little pricey, but I think it'll be around for a while. Review: THE hydrometer - I think these are made in Germany, but not sure. Ten years ago, I bought one marked with the Hella brand name. It was blue. This one is identical but red and marked with Midnite. I guess the maker sells these to various retail companies for promotional purposes. Right now Midnite has the franchise. It is a very good and precise device. The black squeeze bulb lasted ten years with testing 60 battery cells every 60 days before it developed a small air leak and would no longer draw enough acid into the test chamber to make accurate readings - so that probably somewhat over 10,000 bulb-squeezes. I will buy another one in ten years. ## Features - For lead acid batteries. - Large scale. - Hydrostatic barrier. - Precision equipment, - Made in Germany. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007CW8Y9S | | Best Sellers Rank | #237,970 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #109 in Lab Hydrometers | | Brand | Unitec | | Customer Reviews | 4.4 4.4 out of 5 stars (213) | | Date First Available | July 3, 2013 | | Is Discontinued By Manufacturer | No | | Item Weight | 4.1 ounces | | Item model number | 74274 | | Manufacturer | Unitec | | Manufacturer Part Number | 74274 | | Product Dimensions | 1.57 x 4.13 x 7.09 inches | ## Images ![Unitec 74274 Battery Hydrometer Hydro Volts - Image 1](https://m.media-amazon.com/images/I/71ANQaoqnzL.jpg) ## Questions & Answers **Q: How do you read this thing? There is no arrow or other marking that acts as a guide.** A: There are two disks that rotate independently. I believe one is for automatic temperature compensation & the other is the specific gravity. When you take a specific gravity measurement, it will be obvious. Suck in enough battery "water" to cover the discs. It really is a brilliantly designed hydrometer, so much better than the glass tube & float type where you have to calculate the SG based on the temperature compensation read on the thermometer. **Q: You squeeze the electrolyte back into the cell after testing right? And do you have to rinse it out before taking the next reading?** A: Yes, replace the electrolyte. Once out and you move to the next cell squeeze the bulb and suck in the new electrolyte three times to mix out any remaining electrolyte. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Most consistently Accurate *by S***S on January 18, 2026* Not delicate as other glass cubes testers. Compact. 1 full squeeze of the bulb and the chamber is full, I always fill it twice as I feel it is more accurate. Little pricey, but I think it'll be around for a while. ### ⭐⭐⭐⭐⭐ THE hydrometer *by J***I on July 16, 2019* I think these are made in Germany, but not sure. Ten years ago, I bought one marked with the Hella brand name. It was blue. This one is identical but red and marked with Midnite. I guess the maker sells these to various retail companies for promotional purposes. Right now Midnite has the franchise. It is a very good and precise device. The black squeeze bulb lasted ten years with testing 60 battery cells every 60 days before it developed a small air leak and would no longer draw enough acid into the test chamber to make accurate readings - so that probably somewhat over 10,000 bulb-squeezes. I will buy another one in ten years. ### ⭐⭐⭐⭐⭐ Hydro Volt Hydrometer *by A***R on April 10, 2021* Living off- grid and maintaining a battery bank requires a good hydrometer. I have tried several different models and found this style to be of my liking. I find it easy to use and the numbers are clear and easy to read. It does cost a little more but worth the price. I highly recommend. ## Frequently Bought Together - Unitec 74274 Battery Hydrometer Hydro Volts - Mighty Max Battery Golf Cart/Deep Cycle Battery Hydrometer Tester - EZRED SP101 Battery Hydrometer, Factory --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/39741595-unitec-74274-battery-hydrometer-hydro-volts](https://www.desertcart.com.ar/products/39741595-unitec-74274-battery-hydrometer-hydro-volts) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-04-23*