ESB INCORPORATED 13390 Hydrometer Cat Battery Tester V-2-B Cat. No.

( Brand: Esb Incorporated ), ( Manufacturer Part Number: 13390 ), ( Country Of Origin: Usa ), ( Type: Hydrometer ), ( Unit Type: Unit )

Review ESB INCORPORATED Vintage V-2-b Hydrometer Cat. No. Battery Tester Usa

The **ESB 13390 V-2-B Hydrometer & Cat Battery Tester** is a precision-engineered diagnostic tool designed to provide automotive professionals and DIY enthusiasts with a comprehensive assessment of lead-acid battery health, particularly in marine (catamaran) and deep-cycle applications. This dual-function device combines the accuracy of a high-quality hydrometer with the convenience of a battery voltage tester, offering a seamless way to evaluate both the specific gravity of electrolyte and the electrical performance of a battery in a single, compact unit. The hydrometer feature utilizes a floating glass bulb with a calibrated scale, allowing users to measure the density of each cell in a battery by comparing the electrolyte s resistance to displacement an essential indicator of sulfuration, charge state, and overall battery condition. The integrated battery tester, meanwhile, delivers real-time voltage readings to assess the battery s cranking power, float voltage, and overall charge level, ensuring that users can quickly determine whether a battery is fully charged, partially discharged, or beyond repair. Built with durability in mind, the tool features a robust, corrosion-resistant construction to withstand harsh marine environments, including exposure to saltwater, humidity, and vibration. Its ergonomic design includes a comfortable grip and a clear, easy-to-read scale, making it ideal for use in tight spaces or on the go. Whether inspecting a catamaran s starting battery before a voyage or diagnosing a failing deep-cycle system, this versatile tester empowers users with the confidence of accurate, reliable diagnostics helping to extend battery life, prevent unexpected failures, and maintain optimal performance in demanding applications.

The ESB 13390 V-2-B Hydrometer and Battery Tester is a popular tool for checking lead-acid battery health, particularly in automotive and marine applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Comprehensive Testing Capabilities**

The device combines a hydrometer and a battery tester, allowing users to measure specific gravity (a key indicator of battery charge and health) and perform load tests. This dual functionality provides a more thorough assessment of battery condition than either tool alone.

2. **Portability and Ease of Use**

It is compact and lightweight, making it easy to carry and use in various locations, including workshops, garages, or on-site at vehicles. The design is straightforward, with clear instructions for operation.

3. **Accurate Specific Gravity Measurement**

The hydrometer component delivers precise readings of specific gravity, which is critical for diagnosing sulfation, water loss, or overall battery degradation. This helps in determining whether a battery needs recharging, replacement, or maintenance.

4. **Load Testing Functionality**

The built-in battery tester allows for load testing under controlled conditions, simulating real-world demands on the battery. This helps identify weak batteries that may fail under heavy loads (e.g., starting engines in cold weather).

5. **Durable Construction**

The device is built to withstand regular use, with a sturdy body and protective features that prevent damage from accidental drops or exposure to moisture (though it is not fully waterproof).

6. **Affordable Price**

Compared to professional-grade battery analyzers or multi-meter setups, the ESB 13390 V-2-B offers a cost-effective solution for DIY enthusiasts and small-scale professionals.

7. **Versatility**

It works with most 12-volt lead-acid batteries, including flooded, AGM, and gel types (though some advanced battery chemistries may require additional tools for full testing).

8. **Quick Results**

Testing is relatively fast, with specific gravity readings available almost immediately after drawing a sample, and load test results within minutes.

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### **Cons**

1. **Limited to Lead-Aid Batteries**

The tool is designed specifically for lead-acid batteries and cannot be used for lithium-ion, lithium-polymer, or other non-lead chemistries. This restricts its usefulness for modern electric vehicles or some specialty applications.

2. **Manual Hydrometer Requires Sample Drawing**

To measure specific gravity, you must draw a sample of electrolyte from the battery cell using the provided tube. This process can be messy, especially if the battery is overfilled or damaged, and it requires careful handling to avoid spills or contamination.

3. **No Digital Display for Specific Gravity**

The hydrometer is analog, meaning readings are taken visually against a float. While this is accurate, it lacks the precision of digital readings, which some users may prefer for consistency.

4. **Load Test Limitations**

The load test function is basic and may not replicate extreme conditions (e.g., very cold temperatures or high-drain scenarios) as precisely as professional testers. Results may vary based on ambient conditions or battery age.

5. **No Built-In Charging Function**

Unlike some advanced battery testers, this device does not charge or recharge batteries. It only diagnoses their condition, so users must have a separate charger for maintenance.

6. **Potential for User Error**

Incorrect handling of the hydrometer (e.g., not cleaning the tube properly or reading the float incorrectly) can lead to inaccurate results. This requires some practice and attention to detail.

7. **Not Suitable for Large-Scale Testing**

While effective for individual batteries, it is not designed for rapid, high-volume testing in commercial or industrial settings. Businesses may need more automated or digital solutions.

8. **Accessory Dependencies**

The tool requires additional items like a battery post cleaner or distilled water for maintenance, which are not included. Users must source these separately.

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### **Conclusion**

The ESB 13390 V-2-B Hydrometer and Battery Tester is a practical and affordable tool for anyone who regularly works with lead-acid batteries. Its ability to combine specific gravity measurement with load testing makes it a versatile diagnostic tool for DIY mechanics, hobbyists, and small-scale professionals. The device excels in providing clear, actionable insights into battery health, particularly for older or flooded batteries where specific gravity is a critical indicator.

However, its limitations such as being analog, manual, and restricted to lead-acid batteries may not suit users seeking advanced digital features, lithium battery testing, or automated workflows. For those who prioritize simplicity, cost-effectiveness, and hands-on troubleshooting, this tool is highly recommended. For more demanding or professional applications, investing in a digital battery analyzer or multi-meter may be preferable.

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### **Recommendation**

- You primarily work with lead-acid batteries (flooded, AGM, or gel).

- You need a portable, affordable tool for basic diagnostics and load testing.

- You are comfortable with manual processes and analog readings.

- You want a single device that combines hydrometer and tester functions.

- You work exclusively with lithium-ion or other non-lead batteries.

- You prefer digital, automated, or high-precision testing.

- You need to test batteries in bulk or for commercial purposes.

- You require built-in charging or advanced features like temperature compensation.

For most home mechanics or small workshops, the ESB 13390 V-2-B is a solid choice that offers excellent value for its intended use. Pair it with a basic battery charger and post cleaner for a complete maintenance kit.

Details:

The box has wear, staining, and creases. This listing is for a vintage ESB Incorporated V-2-B Hydrometer, Cat. This classic test instrument is designed for measuring the specific gravity of liquids, commonly used testing battery electrolyte. The device itself is in good vintage condition, showing some signs of age and use consistent with a item.

A great piece for collectors of vintage test equipment or those needing a functional hydrometer. The hydrometer is made in the USA and comes with its original cardboard storage box. Please refer to the images for a detailed look at items condition.

part #: 13390 price

• $20.00

specifications tesmetequ:

• brand: Esb Incorporated
• mpn: 13390
• country of origin: Usa
• type: Hydrometer
• unit type: Unit

general tesmetequ:

• Test, Measurement Inspection > Test Meters Detectors > Other Test Meters Detectors
• condition: Used

seller tesmetequ:

• # reviews: 3280
• rating: 100.0%
• city: El Paso, Illinois

offer tesmetequ:

• sold: 0
• best offers: True
• quantity: 1
• availability: In Stock
• started: June 3, 2026
• options: Ship-to-home

payments tesmetequ:

• wallet: Paypal
• other
• credit card: Diners-club

shipping tesmetequ:

• transit: 3-7 Days
• class: Economy
• service: Economy
• type: Fixed
• cost: $7.57

returns tesmetequ:

• method: Money back
• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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