Battery Technology Inc.
Battery Technology Inc. K5XWW-BTI 4-cell 7.6V 7894mAh laptop battery
A 4-cell 7.6 V lithium-polymer battery delivering 7894 mAh for compatible Dell Latitude notebooks
- TypeBattery
- Battery Type4-cell Lithium Polymer
- Battery Voltage7.6V
- Battery Capacity7894mAh
- Weight0.72
- Powers notebooks with 7894mAh lithium-polymer capacity
- 4-cell design delivers 7.6V stable output voltage
- Weighs only 0.72kg for easy portability
- Compatible with Dell Latitude 5289, 7389 and 7390 models
- Backed by 18-month limited warranty and WEEE certification
Direct replacement for select Dell Latitude
This 4-cell lithium polymer battery matches the original 7.6 V specification and 7894 mAh capacity for Dell Latitude 5289, 5289 2-IN-1, 7389 and 7390 2-IN-1 models. It replaces OEM part numbers K5XWW, N18GG, 0N18GG and 451-BBZC. The pack is rechargeable and carries WEEE and China RoHS environmental certifications.
Thermals noise and power draw in normal use
Lithium polymer chemistry keeps internal resistance low, so the cell runs cool during typical charge and discharge cycles. No moving parts mean silent operation. The 7.6 V output matches the notebook’s power management profile without extra load on the system.
Capacity decides runtime for your workload
At 7894 mAh the pack stores the same energy as the factory battery, delivering comparable run time between charges. Buyers who need longer unplugged sessions will require a higher-capacity option not offered here.
Highlights
- Powers notebooks with 7894mAh lithium-polymer capacity
- 4-cell design delivers 7.6V stable output voltage
- Weighs only 0.72kg for easy portability
- Compatible with Dell Latitude 5289, 7389 and 7390 models
- Backed by 18-month limited warranty and WEEE certification
Specifications
| Brand | BTI |
|---|---|
| Model | K5XWW-BTI |
| Type | Battery |
| Battery Type | 4-cell Lithium Polymer |
| Battery Voltage | 7.6V |
| Battery Capacity | 7894mAh |
| Weight | 0.72 |
| Shipping weight | 0.45 kg |
| Package size | 330 × 146 × 32 mm |
Questions about this item
How is the 4-cell lithium polymer battery installed in a Dell Latitude 5289 2-in-1, and what step is commonly missed?
Power off the notebook, remove the base screws, disconnect the old battery cable before lifting it out, then connect the new pack and secure the screws; the step often missed is detaching the cable first.
What maintenance will the 7894 mAh pack need over its service life?
No routine maintenance is required; the pack is sealed and non-user-serviceable, so replacement is the only action once runtime degrades.
What limit appears first when the 7.6 V battery runs under sustained load?
The 18-month limited warranty period is the first defined limit; beyond that, capacity fade from normal lithium-polymer aging becomes the practical constraint.
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