# Battery Cameron Sino for Marshall Mid Major II/III wireless headphones model VDL603040 (replacement, SB8531)

**URL:** https://aio.lv/en/product--cameron-sino-sb8531--12038643
**Data updated:** 2026-03-12 16:47 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** Cameron Sino
**Manufacturer code:** SB8531
**EAN:** 4894128150114
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 21.89 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cameron-sino-sb8531--12038643

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.89 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Replacement battery by Cameron Sino compatible with Marshall Mid Major II and Mid Major III Bluetooth/on-ear headphones. Identified as type VDL603040 and manufacturer part SB8531 (EAN 4894128150114). Designed to replace the original internal rechargeable cell to restore playback time and allow continued wireless use; suitable for repairs and refurbishment of the specified Marshall models.

## Long description

Replacement battery by Cameron Sino designed for Marshall Mid Major II and Mid Major III wireless on-ear headphones. This internal rechargeable cell restores the original device's playback time and enables continued use of Bluetooth functions after the original battery has degraded. The battery is intended for repair and refurbishment of the specified Marshall headphone models and matches the physical size and connector placement required for in-device replacement.
Advantages
The battery provides a direct replacement option that preserves the headphones' original form factor and fit. It restores operating time without requiring external charging accessories and is manufactured to meet typical safety and performance expectations for small lithium polymer cells used in audio headsets. Using a compatible replacement cell can extend the service life of the Marshall Mid Major II and Mid Major III headphones and avoids the need to replace the entire headset.
Suitable for
 Repair or refurbishment of Marshall Mid Major II on-ear headphones
 Repair or refurbishment of Marshall Mid Major III on-ear headphones
 Replacing a worn or degraded internal rechargeable battery to restore playback time
 Use by technicians and experienced DIY users comfortable with disassembling headphones
Key specifications
 Cell type: lithium polymer rechargeable cell
 Nominal form factor: pouch cell sized to fit the Mid Major II/III battery compartment
 Connector: small internal headset battery connector compatible with the original cable arrangement
 Intended use: internal power source for wireless on-ear headphones
How to use
Install the replacement battery by opening the headphone earcup that houses the original cell, disconnecting the original battery connector, and connecting the new cell in the same orientation. Ensure the replacement cell is seated and secured in the compartment so it does not interfere with moving parts or wiring. After reassembly, fully charge the battery before normal use and verify Bluetooth pairing and audio playback. Follow safe handling procedures to avoid puncturing or shorting the cell during installation.
Usage recommendations
Only attempt replacement if you have appropriate tools and experience with small electronics; consider professional repair services if unsure. Use recommended charging accessories and avoid exposing the battery to high heat, moisture, or mechanical stress. Dispose of the removed battery in accordance with local electronic waste regulations.

## FAQ

### How much does the Battery Cameron Sino for Marshall Mid Major II/III cost, and is it available for purchase?

The price is 26.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 10.07.2026 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 Cameron Sino 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 Cameron Sino 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/12038643/67525903_large.webp