# Laptop battery Lenovo 42Wh 3-cell lithium-ion 5B11F21943 compatible models

**URL:** https://aio.lv/en/product--lenovo-5b11f21943--5094806
**Data updated:** 2026-02-12 14:18 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** Lenovo
**Manufacturer code:** 5B11F21943
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 72.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 60.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lenovo-5b11f21943--5094806

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Rechargeable laptop battery by Lenovo with 42Wh capacity and a 3‑cell lithium‑ion design, model 5B11F21943. Provides portable power replacement for compatible Lenovo notebooks, restoring runtime for mobile use, travel, and working away from mains. Designed as a direct swap battery to maintain device functionality and battery monitoring features.

## Long description

Rechargeable laptop battery by Lenovo with 42Wh capacity and a 3‑cell lithium‑ion design, model 5B11F21943 compatible with selected Lenovo notebooks. This replacement battery restores portable runtime and is intended as a direct swap to maintain device functionality and built-in battery monitoring. It is designed for mobile use, travel, and working away from mains power where original battery performance has degraded.
Advantages
The battery provides a nominal energy capacity of 42Wh in a compact 3‑cell lithium‑ion configuration, offering a balance between runtime and lightweight design. As a direct replacement for compatible Lenovo models, it preserves existing power-management and monitoring functions of the device. The cell chemistry and rated capacity enable predictable discharge behavior and standard charge cycle handling when used with the notebook's original charger and charging circuitry.
Suitable for
 Replacing a depleted or failing battery in compatible Lenovo notebooks
 Extending mobile working time for travel and remote use
 Restoring on-battery runtime for devices used away from mains power
 Maintaining device portability without changing charger or power settings
Key specifications
 Battery type: Lithium‑ion (Li‑ion)
 Cell count: 3 cells
 Capacity: 42 Wh (watt-hours)
 Intended use: Notebook / laptop internal replacement battery
 Compatibility: Designed as replacement for select Lenovo notebook models
How to use
Power down the laptop and disconnect any external power source before beginning replacement. Remove the old battery following the notebook manufacturer's service instructions or user manual; install the Lenovo 42Wh 3‑cell battery in the same orientation and secure it according to the device's fastening method. Reconnect mains power and allow the battery to charge fully through the notebook's charging system before first use to ensure proper calibration of battery monitoring functions. Use the original Lenovo charger and follow standard safety procedures for charging and storage.
Usage recommendations
For safe and optimal performance, use the battery only in compatible Lenovo models, avoid exposing it to extreme temperatures, and store it at partial charge if not used for extended periods. Do not attempt to disassemble the battery or expose it to fire or water. If the device displays battery errors after installation, perform a power reset and full charge cycle, and consult Lenovo support or a qualified technician if issues persist.

## FAQ

### How much does the Lenovo laptop battery 5B11F21943 42Wh 3‑cell cost, and is it available for purchase?

The price is 72.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 13.07.2026 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: Cash payment, 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 Lenovo 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 Lenovo 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

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