# Battery Tester Goobay 54020

**URL:** https://aio.lv/en/product--wentronic-54020--1408442
**Data updated:** 2026-04-30 18:26 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** WENTRONIC
**Manufacturer code:** 54020
**EAN:** 4040849540202
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wentronic-54020--1408442

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Goobay Battery Tester is designed for testing various battery sizes including 9V, AA, AAA, C, and D. Its compact dimensions of 52.2 mm width, 49.5 mm depth, and 23.8 mm height make it easy to handle and store. The black color adds a sleek look. This tester helps you quickly determine the charge level of your batteries, ensuring you always have reliable power for your devices.

## Long description

The Goobay Battery Tester 54020 from WENTRONIC is a compact handheld device for checking the remaining charge of standard batteries such as 9V, AA, AAA, C and D. With dimensions of 52.2 mm (W) × 49.5 mm (D) × 23.8 mm (H) and a black housing, the tester is easy to carry, position and store. It provides a quick visual check of battery condition so you can decide whether a cell can continue in service or needs replacement.
Advantages
The Goobay Battery Tester offers a simple, non-destructive way to assess common household battery types. Its small footprint and lightweight construction make it convenient for home, workshop or travel use. The device requires no complex setup: insert the battery, observe the indicator and interpret the result. The tester is suitable for routine checks to prevent unexpected device failures due to weak batteries.
Suitable for
Testing 9V batteries used in smoke detectors and small electronics
Checking AA and AAA cells for remote controls, toys and flashlights
Verifying C and D batteries in radios, lanterns and larger portable devices
Quick battery checks during packing, maintenance or troubleshooting
When it may not be suitable
This battery tester is intended for standard single-cell and 9V battery formats and is not designed for rechargeable battery packs or integrated battery systems found in laptops, phones or power tools. It also does not provide detailed internal resistance measurements or capacity curves; results indicate relative charge level rather than precise remaining runtime.
Key specifications
Supported battery types: 9V, AA, AAA, C, D
Dimensions: approximately 52.2 × 49.5 × 23.8 mm
Color: black
Form factor: compact handheld tester
How to use
Position the tester on a stable surface and insert the battery according to its polarity orientation as indicated on the device. For cylindrical cells (AA, AAA, C, D), place the cell in the holder so both terminals contact the tester; for 9V batteries, align the snap connector with the tester terminals. Read the indicator to determine whether the battery is charged, low or needs replacement. Remove the battery after testing and store the tester in a dry place.
What to consider before purchase
Compatibility with the battery formats you regularly use (9V, AA, AAA, C, D)
Need for advanced measurements such as internal resistance or capacity (not provided)
Desired portability and storage space—compact size is suitable for carry and drawer storage
Usage recommendations
To improve accuracy, test batteries at room temperature and avoid testing immediately after charging or heavy discharge. Use the tester for routine checks of standby devices (smoke detectors, remotes) and replace batteries that show low readings to maintain reliable device operation.

## Specifications

| Feature | Value |
|---|---|
| Height | 23.8 mm |
| Width | 52.2 mm |
| Depth | 49.5 mm |
| Product colour | Black |
| Compatible battery sizes | 9v, AA, AAA, C, D, N |
| Built-in display | Yes |

## FAQ

### How much does the Battery Tester Goobay 54020 cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5420 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 14.07.2026 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. 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 WENTRONIC 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 WENTRONIC 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/1408442/64148737_large.webp