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We would like to respond openly to every negative review about us. Many are posted anonymously, so we cannot reach those customers directly. This open letter is our reply, and we would be grateful if you took a moment to read it.

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  • We import from 70+ official distributors. That is why you pay far less than local retail — and why delivery takes longer. We publish the date before you pay, never after.
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  • We are part of the ITwork group — ten years trading in Europe, nine stores, thousands of positive reviews.
  • Johannesburg and Cape Town stores open this year — real shelves, real stock, walk in and buy the same day.

We are not satisfied with our review scores, and we are not going to fix them by hiding anything. We are fixing them by being faster, clearer and easier to reach than any reason to complain.

Read the full letter — photos and video of real shipments, and a straight answer to every accusation.

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Cameron Sino CS-MRS300SL Replacement Battery for Marshall Mid, Major II, Major III, Monitor Bluetooth Headphones (600mAh, 3.7V, Li-Po)

Cameron Sino CS-MRS300SL Replacement Battery for Marshall Mid, Major II, Major III, Monitor Bluetooth Headphones (600mAh, 3.7V, Li-Po)
Cameron Sino CS-MRS300SL Replacement Battery for Marshall Mid, Major II, Major III, Monitor Bluetooth Headphones (600mAh, 3.7V, Li-Po)
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R569
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This Cameron Sino CS-MRS300SL replacement battery is specifically designed for Marshall Bluetooth headphones, including Mid, Major II, Major III, and Monitor models. It provides a reliable power source to restore your headphones to full functionality, ensuring long listening sessions without interru... Read More
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Stock 10 Code 2905339 Brand CAMERON SINO Model 4894128150114 Warranty 2 Years

Shipping & Returns

Estimated delivery Tuesday, October 6
You will be kept updated through our detailed tracking system
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This Cameron Sino CS-MRS300SL replacement battery is specifically designed for Marshall Bluetooth headphones, including Mid, Major II, Major III, and Monitor models. It provides a reliable power source to restore your headphones to full functionality, ensuring long listening sessions without interruption.

Advantages

High-quality lithium polymer cells deliver stable voltage and consistent performance. The built-in protection circuitry safeguards against overcharge, over-discharge, overcurrent, and short circuits, extending battery life and ensuring safe operation. With a capacity of 600mAh, this battery offers ample power for daily use.

Suitable for

  • Marshall Mid Bluetooth Headphones
  • Marshall Major II Bluetooth Headphones
  • Marshall Major III Bluetooth Headphones
  • Marshall Monitor Bluetooth Headphones

Key specifications

  • Battery Type: Lithium Polymer (Li-Po)
  • Nominal Voltage: 3.7V
  • Capacity: 600mAh / 2.22Wh
  • Model Number: CS-MRS300SL
  • Alternative Part Number: VDL603040
  • Connector: Integrated 2-pin
  • Dimensions: 40 x 30 x 6 mm
  • Weight: 13g
  • Certifications: CE, RoHS

Recommendations

Installation requires disassembly of the headphones. If you are not experienced with electronics repair, we recommend seeking professional assistance. Ensure the device is powered off before replacement.

Specifications
Brand
Cameron Sino
Category
Battery
EAN
4894128150114
Model
CS-MRS300SL
MPN
CS-MRS300SL
Product colour
Black
Type
Lithium Polymer
Weight
13
Price history over the last 6 months
Cameron Sino CS-MRS300SL Replacement Battery for Marshall Mid, Major II, Major III, Monitor Bluetooth Headphones (600mAh, 3.7V, Li-Po)
Current
R569
Lowest
R553
Highest
R569
Change 24H
+R10   +2%
Week
+R14   +2%
Month
+R12   +2%

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