---
product_id: 809437
title: "OTC 4619 Professional Battery Hydrometer , Red"
brand: "otc"
price: "645 DH"
currency: MAD
in_stock: true
url: https://www.desertcart.ma/products/809437-otc-4619-professional-battery-hydrometer-red
store_origin: MA
region: Morocco
---

# Flexible rubber tip for hard-to-reach cells Measures specific gravity 1.100-1.300 Built-in thermometer for precise temp correction OTC 4619 Professional Battery Hydrometer , Red

**Brand:** otc
**Price:** 645 DH
**Availability:** ✅ In Stock

## Summary

> ⚡ Charge smarter, not harder — the pro’s choice for battery health!

## Quick Answers

- **What is this?** OTC 4619 Professional Battery Hydrometer , Red by otc
- **How much does it cost?** 645 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/809437-otc-4619-professional-battery-hydrometer-red)

## Best For

- otc enthusiasts

## Why This Product

- Trusted otc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Access:** Flexible rubber tip lets you effortlessly test even the most inaccessible battery cells without removal.
- • **Compact & Lightweight:** Slim 3.8 x 14.3 inch profile weighing just 0.035 oz fits seamlessly into any professional toolkit.
- • **Durable & Classic Design:** Robust glass and rubber construction combines timeless style with reliable performance backed by a 1-year warranty.
- • **Precision Charge Insight:** Accurately gauges battery health with a clear, easy-to-read float scale from 1.100 to 1.300 specific gravity.
- • **Temperature-Adjusted Accuracy:** Integrated thermometer ensures your readings are spot-on by compensating for electrolyte temperature variations.

## Overview

The OTC 4619 Professional Battery Hydrometer is a precision tool designed to measure the specific gravity of battery electrolyte between 1.100 and 1.300, providing an accurate state-of-charge reading. Featuring a built-in thermometer for temperature compensation and a flexible rubber tip for easy access to all battery cells, this compact, durable hydrometer ensures reliable diagnostics for professionals and enthusiasts alike.

## Description

OTC 4619 Professional Battery Hydrometer , Red

## Features

- Hydrometers test the state of charge of a battery cell by measuring the specific gravity (density) of the electrolyte - the greater the concentration of sulfuric acid, the more dense the electrolyte becomes
- OTC's Professional Battery Hydrometer displays a batteries specific gravity (density) on an easy-to-read float with a scale ranging from 1.100 to 1.300
- Built in thermometer indicates what must be added or subtracted from the float reading to arrive at an accurate specific gravity reading for each battery cell
- Flexible rubber tip offers easy access to even hard to reach battery cells while the battery is still in the vehicle
- Glass and rubber construction; One year limited warranty
- Note: Due to glass construction, care must be taken during setup, use, and storage to prevent damage to outer tube, float, and thermometer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OTC |
| Power Source | Battery Powered |
| Style | Classic |
| Color | Red |
| Item Weight | 1 Grams |
| Item dimensions L x W x H | 3.8 x 14.3 x 0.6 inches |
| Measurement Type | Specific Gravity |
| UPC | 731413039898 |
| Manufacturer | OTC |
| Global Trade Identification Number | 00731413039898 |
| Model | 4619 |
| Item Weight | 0.035 ounces |
| Product Dimensions | 3.8 x 14.3 x 0.6 inches |
| Item model number | 4619 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 4619 |

## Product Details

- **Brand:** OTC
- **Power Source:** Battery Powered
- **Style:** Classic
- **Color:** Red
- **Item Weight:** 1 Grams

## Images

![OTC 4619 Professional Battery Hydrometer , Red - Image 1](https://m.media-amazon.com/images/I/51Etxrz6afL.jpg)

## Questions & Answers

**Q: Is the tip thin enough to go into a motorcycle battery? I bought a cheapie from my auto store that was too wide to fit!**
A: I don't currently have a motorcycle, but I see a problem.  I the tip size may be an issue, but I would have greater concern with the volume of acid to be drawn up.  The glass tube is fairly wide and you need to draw enough acid that to indicator float actually floats.  This is about 3 inches.  I suspect that this may be more than the total volume of a cell.  If you think the volume is OK, you can insert a piece of small plastic tubing in the hydrometer and reach into the battery with that.

**Q: will this hydrometer work for both car batteries and deep cycle batteries?**
A: Yes as long as you have access to the  acid in the battery.

**Q: My hydrometer only reads fair for all of the cells on six different batteries.  I have another older and different type that reads good. Is mine bad?**
A: Batteries are hard to figure out at first. The best advice is probably to compare one or all cells to the others on one battery. Comparing one cell of one battery to one cell of another is not good. I would first read up on batteries in general through facebook or an RV website. The hydrometer is a good unit, but the glass tube is very fragile. Mine was received with the upper portion of the glass crammed into the rubber stop inside the bulb. I had to break it off evenly and repair it with some silicone gasket material. I think you will be impressed if you compare it to one of the plastic ones.

**Q: Your ad states a proud heritage; does this mean this item is specifically made in the United States?**
A: I believe this item is made by Bosch, which has a proud heritage, but is not made in the USA.

## Frequently Bought Together

- OTC 4619 Professional Battery Hydrometer , Red
- LubriMatic 75-033 Battery Filler w/ Rubber Spout, red, 1 Count (Pack of 1)
- EZRED SP101 Battery Hydrometer, Factory

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*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-03-05*