# Hydrometer for measuring electrolyte density Forsage F-9G4005 — manual density gauge for battery acid

**URL:** https://aio.lv/en/product--forsage-f-9g400568104--12043154
**Data updated:** 2026-03-12 19:25 (EET)
**Category:** Measuring tools
**Manufacturer:** Forsage
**Manufacturer code:** F-9G4005(68104)
**EAN:** 5905101305687
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.49 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 4.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--forsage-f-9g400568104--12043154

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Hydrometer Forsage F-9G4005 is a manual instrument for measuring the density of battery electrolyte. It provides direct reading of specific gravity to assess state of charge and electrolyte condition in lead-acid batteries. The compact handheld design is suitable for workshop and field use when testing battery cells, performing maintenance or diagnosing charging issues.

## Long description

Hydrometer Forsage F-9G4005 is a manual density gauge designed to measure the specific gravity of electrolyte in lead-acid batteries. The handheld instrument gives a direct reading of electrolyte density to help determine state of charge and detect issues such as sulfation, stratification, or water dilution. Its compact construction and simple operation make it appropriate for workshop technicians and field service use when testing individual battery cells during maintenance or troubleshooting.
Advantages
This hydrometer offers straightforward manual measurement without need for power, enabling quick assessment of each cell's specific gravity. The clear float-scale display allows direct reading of electrolyte density and comparison between cells. Lightweight and portable, the device is suitable for use in confined battery compartments and on-site service visits. Materials in contact with electrolyte are selected for chemical resistance to dilute sulfuric acid, promoting durability with normal workshop use.
Suitable for
Measuring specific gravity of electrolyte in lead-acid vehicle batteries
Battery maintenance and state-of-charge checks in workshops and garages
Diagnosing individual cell problems during battery service and repair
Field testing and periodic inspection of stationary lead-acid battery banks
Key specifications
Manual hydrometer design with float and scale for direct specific gravity reading
Handheld, compact form factor for portable use
Materials resistant to dilute sulfuric acid for compatibility with battery electrolyte
Suitable for use with lead-acid battery cells (service and testing)
How to use
Wear appropriate personal protective equipment (gloves and eye protection) before handling battery electrolyte. Insert the hydrometer tube into the battery cell and draw electrolyte until the float moves freely inside the chamber. Read the specific gravity value indicated by the float against the scale at the electrolyte surface level. Compare readings between cells to identify discrepancies indicating partial charge, sulfation, or electrolyte stratification. After measurement, return electrolyte to the cell if instructed by battery manufacturer, rinse the hydrometer with distilled water and store in a safe place away from direct sunlight and corrosive substances.
Usage recommendations
Use the hydrometer in a well-ventilated area and when the battery is at rest (not immediately after charging or heavy discharge) to obtain representative specific gravity readings. Record measurements for each cell and perform measurements at consistent temperature conditions when possible; consult battery manufacturer guidance for temperature correction if precise values are required.

## FAQ

### How much does the Hydrometer Forsage F-9G4005 cost, and is it available for purchase?

The price is 5.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 27.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Forsage products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Forsage service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12043154/67530048_large.webp