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Rectangular lithium-polymer battery pack, dark finish, 8.0 by 1.5 by 0.8 cm, 0.4 kg

Dr. Battery

Dr. Battery 1785 Surface Book Performance Base GTX 965M laptop battery

SKU CH-PCYJ-GF74B MPN 1785

Replacement lithium-polymer battery delivering 7.57 V and 8030 mAh for the Surface Book 1 Performance Base with GTX 965M, with built-in over-charge, over-discharge.

  • TypeBattery
  • CompatibilityMicrosoft Surface Book 1 model (1785) with performance base
  • Battery TypeLi-polymer
  • Battery Voltage7.57V
  • Battery Capacity8030 mAh
  • FunctionNotebook
  • Replaces original Microsoft part numbers 93HTA001H and G3HTA001H
  • 8030 mAh Li-polymer capacity powers extended work sessions
  • 57 V voltage matches Surface Book 1 Performance Base spec
  • Built-in protection guards against over-charge, over-discharge, overheating, short-circuit
  • OEM-grade cells deliver stable performance and reliable battery life

Purpose-Built Replacement

This Dr. Battery Professional Series unit is a direct replacement for the Microsoft Surface Book 1 (Model 1785) Performance Base and Enhanced Edition with GTX 965M graphics. It restores mobile power to the detachable keyboard base that houses the discrete GPU. The Li-polymer pack operates at 7.57V and provides 8030 mAh capacity for professional and everyday workloads.

Build Integration

The battery fits inside the Performance Base keyboard module, requiring no external cabling or chassis modification. It connects to the existing motherboard header used by original part numbers G3HTA001H and 93HTA001H. Integrated circuitry protects against over-charge, over-discharge, overheating and short-circuit, freeing the system from unstable power delivery. Dimensions are 8.0x1.5x0.8 and weight is 0.4.

Buyer Fit

This suits owners of a Surface Book 1 model 1785 with Performance Base or Enhanced Edition who need a new internal power source matching the original voltage and capacity. Buyers with standard Surface Book 1 models lacking the Performance Base, or those needing a different voltage or form factor, should look elsewhere. Confirm the original part number before ordering.

Highlights

  • Replaces original Microsoft part numbers 93HTA001H and G3HTA001H
  • 8030 mAh Li-polymer capacity powers extended work sessions
  • 57 V voltage matches Surface Book 1 Performance Base spec
  • Built-in protection guards against over-charge, over-discharge, overheating, short-circuit
  • OEM-grade cells deliver stable performance and reliable battery life

Specifications

BrandMicrosoft
ModelMicrosoft Surface Book 1 (Model 1785) Performance Base Series
Part NumberDR-PRO-LMS203-C
TypeBattery
CompatibilityMicrosoft Surface Book 1 model (1785) with performance base / Microsoft Surface Book 1 model (1785) with performance base (GTX 965M) Enhanced Edition / Microsoft Surface Book 1 Performance Keyboard Base 1785 / Microsoft Surface Book 1785 With Performance Base / Microsoft Surface Book 1st 1785 battery / Microsoft Surface Book 1st Gen 1785 / Microsoft Surface Book Enhanced Edition
Battery TypeLi-polymer
Battery Voltage7.57V
Battery Capacity8030 mAh
FunctionNotebook
Dimension8.0x1.5x0.8
Weight0.4

Questions about this item

How long does the 8030 mAh capacity last under sustained use?

The 8030 mAh Li-polymer cell provides reliable power for professional and everyday workloads on the Surface Book 1 Performance Base.

Does the battery overheat during all-day operation?

Built-in safety circuitry protects against overheating, over-charge, over-discharge and short-circuit during continuous use.

Which original Microsoft part numbers must match for this replacement to work?

Confirm your original battery shows 93HTA001H or G3HTA001H before installing this Dr. Battery unit.

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