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Rectangular black laptop battery with 8-pin connector

GreenTechLLC

GreenTechLLC BTY-M491 52.4Whr 8-pin black connector laptop battery

SKU CH-P2SP-T536K

Replacement 52.4 Wh lithium-ion battery with 8-pin black connector for MSI Modern 15 series laptops

  • Battery type3 Cell Lithium-Ion
  • Battery voltage rating11.4 V
  • Battery capacity4600MAH
  • Product colorBlack
  • Product typeBattery
  • Compatible withMSI MODERN 15 A10M, MSI MODERN 15 A10RAS, MSI MODERN 15 A10R
  • Fits MSI Modern 15 A10 and A11 series models
  • 4 V 4600 mAh 52.4 Whr 3-cell lithium-ion power
  • 8-pin black connector matches OEM BTY-M491 exactly
  • CE FCC RoHS certified for circuit protection and stable current
  • Low self-discharge design tested for correct voltage output

What this battery replaces

The GreenTech BTY-M491 is a 3-cell lithium-ion replacement battery rated at 11.4V and 4600mAh for a total of 52.4Whr. It matches the original OEM part number BTY-M491 and uses an 8-pin black connector. Compatible models include the MSI Modern 15 A10M, A10RAS, A10RB, A10RD, A11M, A11SB, A4M and A4Mw series.

Check your current part before ordering

Verify that your existing battery carries the exact part number BTY-M491 and shows an 8-pin black connector. The voltage must read 11.4V and the capacity 4600mAh. Several MSI Modern 15 sub-models share the same chassis but use different batteries, so a visual match on the connector and label is essential.

Build quality and daily implications

The black 8-pin connector keys into the motherboard socket in one orientation, preventing reversed insertion. A 3-cell lithium-ion pack keeps the profile slim for the Modern 15 chassis. CE, FCC and RoHS certifications confirm the unit meets baseline safety standards for voltage regulation and circuit protection.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $53.99
Pricier than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model nameBTY-M491
Part numberBTY-M491
Product colorBlack
Product typeBattery
Power
Battery type3 Cell Lithium-Ion
Battery voltage rating11.4 V
Battery capacity4600MAH
Compatibility
Compatible withMSI MODERN 15 A10M, MSI MODERN 15 A10RAS, MSI MODERN 15 A10RB, MSI MODERN 15 A10RD, MSI MODERN 15 A11M, MSI MODERN 15 A11SB, MSI MODERN 15 A4M, MSI MODERN 15 A4Mw

Questions about this item

Does the BTY-M491 arrive with any tools or cables, or must I supply them?

The battery ships as a single 3-cell lithium-ion unit with an 8-pin black connector; no tools, screws or cables are included.

My MSI Modern 15 is an A10RB-027DE — is this the exact replacement?

Yes, the BTY-M491 replaces OEM part BTY-M491 and fits every listed A10RB sub-model including A10RB-027DE.

What does the 52.4 Wh rating deliver in daily use on an A11M?

At 11.4 V and 4600 mAh the pack stores 52.4 Wh, matching the original capacity for equivalent runtime per charge.

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