# Battery and Accumulator Digital Tester Lean 21288 — Universal Handheld Meter

**URL:** https://aio.lv/en/product--lean-21288--11441310
**Data updated:** 2026-03-11 13:37 (EET)
**Category:** Measuring tools
**Manufacturer:** Lean
**Manufacturer code:** 21288
**EAN:** 5905991037217
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lean-21288--11441310

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Universal digital tester Lean 21288 is a handheld meter for checking batteries and accumulators. The device is intended to measure battery condition and basic electrical parameters to determine charge status and usability. Practical for hobbyists, technicians and households for quick testing of AA/AAA, coin cells and other small rechargeable or primary cells.

## Long description

The Lean 21288 Battery and Accumulator Digital Tester — Universal Handheld Meter is a compact device designed to check the condition of small primary and rechargeable cells. It measures basic electrical parameters to help determine remaining charge and usability for AA, AAA, coin cells and similar formats. The tester is intended for quick diagnostics by hobbyists, technicians and households when a fast verification of battery condition is required.
Advantages
The tester provides a simple, handheld form factor that enables fast on-the-spot measurement without additional tools. Its universal contact arrangement accommodates common small cell sizes and allows measuring a range of voltages relevant for household batteries and accumulators. The device delivers clear numeric readouts for quick interpretation and helps avoid unnecessary replacement of still-usable cells.
Suitable for
Checking charge status of AA and AAA alkaline and NiMH cells
Testing coin cells used in watches, remotes, and small electronics
Verifying small rechargeable accumulators before installation
Quick diagnostics in workshops, educational settings and at home
Key specifications
Form factor: handheld, portable tester
Measurement type: DC voltage measurement for small cells
Supported cell sizes: AA, AAA, coin cells and similar small-format batteries
Display: numeric readout for voltage and basic status indication
Power: typically battery-powered for standalone operation
Contact method: manual contact/adapter arrangement suitable for small cells
How to use
Place the battery or accumulator on the tester contacts according to the device instructions so that positive and negative terminals make firm contact. Power on the tester and observe the numeric readout to determine the voltage level and charge status. Compare the measured voltage against typical nominal values for the battery type to decide whether the cell is usable, requires charging, or should be replaced. For coin cells, ensure the tester contacts align with the flat surfaces to obtain a stable reading.
Usage recommendations
For reliable results, clean battery contacts before testing and ensure the tester itself has fresh power. Test batteries at room temperature and avoid using the meter on damaged or leaking cells. Use the device as a quick diagnostic aid alongside manufacturer-specified charge and discharge criteria for precise decisions about reuse or disposal.

## FAQ

### How much does the Digital Battery Tester Lean 21288 cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 390 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 02.07.2026 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 Lean 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 Lean 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/11441310/66079866_large.webp