Dell P78F / P90F 11.4V 42Wh Laptop Battery Specifications
- Battery Type: Li-ion high-density cells
- Capacity: 42Wh standard configuration
- Voltage: 11.4V stable output
- Cells: 3-cell internal lithium-ion pack
- Compatibility: Dell P78F / P90F battery series
- Platform Support: Dell Inspiron 15 series (select models)
- Design: Internal OEM replacement battery
- Charging Support: Dell Smart Charge / ExpressCharge systems
- Part Numbers: P78F / P90F / compatible 42Wh battery family variants
Dell P78F / P90F 11.4V 42Wh Laptop Battery Overview
The Dell P78F / P90F 11.4V 42Wh laptop battery is an OEM internal replacement designed for select Dell Inspiron laptops. It delivers stable voltage output, efficient power management, and reliable runtime for everyday tasks such as browsing, office work, online learning, and light productivity use.
This 42Wh configuration is the standard capacity option for the P78F / P90F battery family, offering a balance between portability and basic daily usage. It is widely used in Inspiron 15 series laptops where lightweight design and moderate battery life are required.
Industry listings confirm this model as a 3-cell 11.4V lithium-ion battery with 42Wh capacity, compatible with various Inspiron 15 models used in the P90F/P78F platform family.
Dell P78F / P90F 11.4V 42Wh Laptop Battery Price Table
| Product | Price in Kenya (KSh) |
|---|---|
| Dell P78F / P90F 11.4V 42Wh Laptop Battery | 6,500 – 13,500 |
Dell P78F / P90F 11.4V 42Wh Laptop Battery Key Specifications
| Specification | Details |
|---|---|
| Model | Dell P78F / P90F |
| Platform | Dell Inspiron 15 series (select models) |
| Battery Type | Lithium-ion |
| Capacity | 42Wh |
| Voltage | 11.4V |
| Cell Configuration | 3-cell |
| Build Type | Internal replacement battery |
| Cycle Life | ~300–500 cycles |
| Charging System | Dell Smart Charge / ExpressCharge |
Dell P78F / P90F 11.4V 42Wh Laptop Battery Charging Performance
- Stable charging for daily productivity tasks
- Supports Dell ExpressCharge (model dependent)
- Efficient energy delivery for light workloads
- Full charge typically in ~2–3 hours
- Optimized for standard Inspiron usage
Dell P78F / P90F 11.4V 42Wh Laptop Battery Safety Features
- Overcharge protection
- Over-discharge protection
- Short-circuit protection
- Thermal regulation system
- Smart battery IC management
Dell P78F / P90F 11.4V 42Wh Laptop Battery Compatibility
- Dell Inspiron 15 3501 / 3505 / 3594 series (select models)
- Dell P78F / P90F compatible laptop family
- Always confirm exact battery part number before purchase
Dell P78F / P90F 11.4V 42Wh Laptop Battery Durability & Build
- High-quality lithium-ion cells
- OEM-grade internal casing
- Stable discharge under normal workloads
- Designed for everyday consumer use
- Secure internal connector design
Dell P78F / P90F 11.4V 42Wh Laptop Battery Energy Efficiency
- Optimized for everyday computing
- Balanced runtime and portability
- Stable voltage under multitasking
- Ideal for office and student use
Dell P78F / P90F 11.4V 42Wh Laptop Battery Ideal Use Cases
- Students
- Office users
- Home users
- Remote workers
- Light productivity tasks
Dell P78F / P90F 11.4V 42Wh Laptop Battery Pros and Cons
| Pros | Cons |
|---|---|
| Affordable OEM replacement | Limited runtime for heavy workloads |
| Stable 11.4V output | Internal installation required |
| Safe Dell-compatible design | Not suitable for gaming or heavy rendering |
| Widely used in Inspiron series | Must confirm exact compatibility |
| Reliable daily performance | Capacity is relatively low (42Wh) |
Dell P78F / P90F 11.4V 42Wh Laptop Battery Conclusion
The Dell P78F / P90F 11.4V 42Wh laptop battery is a reliable OEM replacement designed for Dell Inspiron 15 series laptops. It delivers stable performance, safe charging, and efficient everyday runtime, making it a practical and affordable option for users in Kenya who need dependable basic laptop power.
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