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Rectangular lithium-polymer laptop battery, matte black finish, three-cell pack

Battery Technology Inc.

Battery Technology Inc. 51KD7-BTI laptop battery 11.4V 3684mAh 3-cell Li-Polymer

SKU CH-ER68-X06SB MPN 51KD7-BTI

Replacement 3-cell lithium-polymer battery for Dell Chromebook 11 3180 and 3189, 11.4 V 3684 mAh

  • Battery type3 Cell Lithium Polymer
  • Battery voltage rating11.4 V
  • Battery capacity3,684 mAh
  • Product typeBattery
  • Product weight0.58
  • Replaces Dell OEM parts 051KD7, 51KD7, FY8XM
  • 3684 mAh lithium-polymer capacity powers your Chromebook longer
  • 4 V output matches original voltage exactly
  • Fits Dell Chromebook 11 3180 and 11 3189 models
  • 18-month limited warranty backs the replacement battery

Drop-in replacement for Dell Chromebook 11 3180

This 11.4 V lithium-polymer pack replaces OEM part numbers 051KD7, 51KD7 and FY8XM. It fits the proprietary battery bay without modification and restores the original 3684 mAh capacity. The cell is sold new and carries WEEE and China RoHS environmental certifications.

Steady output through a full workday

The three-cell chemistry maintains a stable 11.4 V DC across the discharge curve so the Chromebook does not throttle during long classroom or office sessions. Recharge cycles are consistent because the pack is designed for the device’s native charge controller.

3684 mAh capacity decides runtime

This single figure determines how many hours the machine runs between charges. Buyers who need more storage or a higher-voltage pack for a different model cannot use this battery.

How it compares

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

Price $77.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameBTI
Model name51KD7-BTI
Product typeBattery
Power
Battery type3 Cell Lithium Polymer
Battery voltage rating11.4 V
Battery capacity3,684 mAh
Size & build
Shipping weight0.45 kg
Package size251 × 127 × 32 mm

Questions about this item

Does the 3-cell lithium-polymer pack run warm during a full day of use on my Chromebook 11 3180?

The battery is a passive component with no active cooling; it generates only the normal heat of charge and discharge cycles inside the laptop chassis.

What must I already own to install this 51KD7-BTI replacement?

You need a compatible Dell Chromebook 11 3180 or 3189 and a small Phillips screwdriver to open the bottom case and disconnect the old pack.

Will this 11.4 V, 3684 mAh battery work properly in a Chromebook 11 3189 that originally shipped with the same voltage?

Yes, the pack matches the OEM part numbers 051KD7, 51KD7 and FY8XM and is listed as compatible with both the 3180 and 3189 models.

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