# CMOS BIOS battery Dell ML-1220 3V Lithium (for W6NPD) replacement cell

**URL:** https://aio.lv/en/product--dell-w6npd--3282282
**Data updated:** 2026-02-12 09:51 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** Dell
**Manufacturer code:** W6NPD
**EAN:** 5706998280466
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dell-w6npd--3282282

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Replacement CMOS/BIOS battery Dell ML-1220, 3V lithium cell compatible with devices using MPN W6NPD. Designed to preserve BIOS settings and system clock when main power is removed. Suitable for motherboard maintenance, repairs or refurbishments where original W6NPD battery is required. Simple to install and provides long shelf life.

## Long description

Replacement CMOS/BIOS battery Dell ML-1220 is a 3V lithium coin cell designed to maintain motherboard BIOS settings and the real-time clock when the main power source is removed. Compatible with systems that use the original W6NPD cell, this replacement provides a compact power solution for desktop and server motherboards during transport, storage, or after power loss. The cell is intended for straightforward in-system replacement and for use in maintenance, repair or refurbishment of compatible Dell systems.
Advantages
The ML-1220 3V lithium cell offers stable voltage output and a long shelf life, reducing the need for frequent replacements. Its standardized coin-cell size ensures a secure fit in compatible motherboard holders. The battery's chemistry provides reliable low-drain performance suitable for maintaining CMOS memory and clock functionality over extended periods without external power.
Suitable for
 Replacing depleted CMOS/BIOS batteries on compatible Dell motherboards
 Motherboard maintenance and refurbishment projects
 Repairing systems that fail to retain BIOS settings or correct system time
 Storage or transport of systems where BIOS and clock preservation is required
Key specifications
 Nominal voltage: 3 V
 Chemistry: lithium manganese dioxide (Li-MnO2) coin cell
 Form factor: coin/button cell (ML-1220 size)
 Intended use: low-drain devices for CMOS/BIOS memory and real-time clock backup
 Typical shelf life: long-term storage stability (years under proper conditions)
 Operating temperature range: suitable for typical indoor electronics use
How to use
Power off the system and disconnect it from mains power before attempting battery replacement. Locate the CMOS battery holder on the motherboard and carefully remove the depleted cell according to the board manufacturer's instructions, taking electrostatic discharge precautions. Insert the replacement ML-1220 3V cell with the correct polarity, ensuring it is seated securely in the holder. Reconnect power and verify BIOS settings and system clock; restore any custom BIOS configuration if necessary.
Usage recommendations
Store unused cells in a cool, dry place away from direct sunlight and heat sources. Do not recharge, disassemble, short-circuit, or expose the cell to fire. Dispose of spent batteries according to local regulations for lithium battery recycling or hazardous waste. For safe installation, consult the motherboard manual and, if unsure, seek professional service to avoid damage to the board or loss of data.

## FAQ

### How much does the CMOS BIOS battery Dell ML-1220 3V 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 — 66 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 01.07.2026 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 Dell 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 Dell 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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