# CoreParts CMOS Backup Battery for Lenovo Thinkpad T400 T410 RTC battery

**URL:** https://aio.lv/en/product--coreparts-mbxcmos-ba035--10617915
**Data updated:** 2025-12-30 08:54 (EET)
**Category:** Other Repair Parts
**Manufacturer:** CoreParts
**Manufacturer code:** MBXCMOS-BA035
**EAN:** 5706998721006
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--coreparts-mbxcmos-ba035--10617915

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

The CoreParts CMOS Backup Battery is designed for Lenovo Thinkpad T400 and T410 series laptops. This RTC battery ensures reliable power for your laptop's real-time clock and memory functions. It is compatible with models such as T400, T400s, T410, and T410s, providing essential backup power to maintain system settings during power outages.

## Long description

The CoreParts CMOS Backup Battery for Lenovo Thinkpad T400 T410 RTC battery provides backup power for the real-time clock and CMOS memory in compatible Lenovo ThinkPad laptops. It is designed to maintain system settings and timekeeping when the main battery or AC power is removed and fits models such as T400, T400s, T410, and T410s. The product is supplied by CoreParts and carries the manufacturer code MBXCMOS-BA035 and EAN 5706998721006.
Advantages
This CMOS backup battery delivers reliable retention of BIOS settings and RTC data, helping to prevent loss of configuration during power interruptions. It is produced to match the performance of the original component and is compatible with multiple ThinkPad T400/T410 variants. The battery is compact and intended for straightforward replacement in supported laptop models.
Suitable for
Lenovo ThinkPad T400
Lenovo ThinkPad T400s
Lenovo ThinkPad T410
Lenovo ThinkPad T410s
Key specifications
Brand: CoreParts
Manufacturer code (MPN): MBXCMOS-BA035
EAN: 5706998721006
Function: CMOS/RTC backup battery
Compatible models: Lenovo ThinkPad T400, T400s, T410, T410s
How to use
Power off the laptop and remove the main battery and AC adapter before starting. Access the CMOS battery compartment according to the Lenovo service manual for your model. Replace the existing CMOS/RTC battery with the CoreParts unit, ensuring correct connector orientation and secure fit. Reassemble the laptop, reinsert the main battery, connect AC power, and verify BIOS settings and system time are retained.
Usage recommendations
Handle the battery and internal components with care to avoid electrostatic discharge. If unsure about the replacement procedure, consult the Lenovo service manual or a qualified technician. Dispose of the old battery in accordance with local electronic waste regulations.

## Specifications

| Feature | Value |
|---|---|
| Type | RTC battery |
| Weight | 0.03 kg |
| Certification | CE |
| Battery technology | Lithium-Ion (Li-Ion) |
| Package weight | 40 g |
| Compatibility | Thinkpad T400, Thinkpad T400s, Thinkpad T410, Thinkpad T410s |
| Battery capacity | 200 mAh |
| Height | 20 mm |
| Width | 3 mm |
| Depth | 3 mm |
| Product colour | Green |
| Country of origin | China |
| Package depth | 29 mm |
| Package height | 76 mm |
| Package width | 86 mm |
| Battery voltage | 3 V |
| Brand compatibility | Lenovo |
| Number of batteries included | 1 pc(s) |
| Battery capacity | 0.6 Wh |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the CoreParts CMOS Backup Battery for Lenovo Thinkpad T400 T410 cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 108 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 21.07.2026 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 CoreParts 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 CoreParts 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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