We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black 3-cell lithium-ion laptop battery

Battery Technology Inc.

Battery Technology Inc. G91J0-BTI laptop battery 3-cell 11.25V 3644mAh 42Wh

SKU CH-W8T7-D9EJ2 MPN G91J0-BTI

Three-cell lithium-ion replacement battery delivers 11.25 V and 3,644 mAh for 42 Wh of capacity

  • Battery type3 Cell Lithium-Ion
  • Battery voltage rating11.25 V
  • Battery capacity3,644 mAh
  • Product colorBlack
  • Product typeBattery
  • Key featuresWatt hour: 42 Wh
  • 3-cell lithium-ion design keeps weight low
  • 25 V output matches original Dell specifications
  • 3644 mAh capacity delivers 42 Wh of runtime
  • Brand-new condition ensures full cycle life from day one
  • Black finish blends with notebook chassis

Genuine Dell replacement battery

The BTI G91J0-BTI is a new 3-cell lithium-ion pack built to fit compatible Dell notebooks. It restores original runtime for users whose factory battery no longer holds a useful charge.

Steady discharge at 11.25 volts

The pack maintains its rated 11.25 V output through extended work sessions rather than only in brief bursts. A 42 Wh rating confirms the energy available for sustained productivity away from mains power.

3644 mAh capacity decides fit

This single figure determines whether the battery matches the endurance you expect from the original equipment. Verify the mAh rating against your service manual before ordering.

How it compares

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

Price $105.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameBTI
Model nameG91J0-BTI
Product colorBlack
Product typeBattery
Power
Battery type3 Cell Lithium-Ion
Battery voltage rating11.25 V
Battery capacity3,644 mAh
Size & build
Shipping weight0.91 kg
Package size254 × 127 × 51 mm

Questions about this item

Does the 3-cell lithium-ion design of the G91J0-BTI run hot or make noise during a full workday?

The battery has no moving parts and produces no audible noise. Heat output depends on the laptop's own thermal design and the load you place on it.

What must my Dell notebook already have so this 11.25 V 42 Wh pack will fit and charge?

Your notebook needs a battery bay and charging circuit that accept a 3-cell 11.25 V lithium-ion pack with the same physical connector and form factor as the original Dell battery.

Will the G91J0-BTI work reliably in an older Dell that originally shipped with a lower-capacity 3-cell battery?

Yes, provided the older system expects an 11.25 V 3-cell lithium-ion pack; the 3644 mAh capacity simply offers more runtime than the original lower-capacity unit.

More in Laptop Chargers & Batteries

Similar items