Q: How many hours will a 42-watt-hour battery last?

The duration a 42-watt-hour battery will last depends on the power consumption of the device it is powering. To calculate the approximate runtime, divide the battery capacity (in Watts-hours) by the power consumption (in Watts) of the device.

In today's digital age, where laptops are indispensable tools for work, education, and entertainment, the importance of reliable battery performance cannot be overstated. A laptop's battery serves as its lifeline, allowing users to remain productive and connected even when away from power outlets. High-quality laptop batteries provide extended usage between charges, offering convenience and flexibility to users on the go. With advancements in technology, modern laptop batteries not only deliver long-lasting performance but also ensure safety and durability. Whether you're a student attending classes, a professional working remotely, or a traveller on the move, investing in the best laptop batteries is essential for uninterrupted productivity and seamless computing experiences.

List of the best laptop batteries under 3000

Name	Amazon Ratings	Amazon Price
Dell Original 42Wh 11.4V 3500mAh 3 Cell Laptop Battery	4.2 / 5	Click here
Dell Original Battery M5Y1K Inspiron	3.9 / 5	Click here
HP KI04 4-Cell Li-Ion Original Laptop Battery	4.0 / 5	Click here
HP JC04 41W 4-Cell Li-Ion Original Laptop Battery	4.1 / 5	Click here
Dell Inspiron 15 (3 Cell) Battery	4.2 / 5	Click here
WISTAR XCMRD Battery for Dell Inspiron 15	3.9 / 5	Click here
Laptrix H-P OA04 Laptop Battery	3.7 / 5	Click here
Lapcare LHOBTS5805 4-Cell Laptop Battery	3.9 / 5	Click here
Lapcare CQ42 6-Cell Battery for HP Laptops	3.6 / 5	Click here
WISTAR HS04 Laptop Battery for HP	4.3 / 5	Click here

For more such articles browse the Accessories segment in the Electronics section of the Top Trending Products Page. Meanwhile, check out this article on the best laptop batteries under 3000.

1. Dell Original 42Wh 11.4V 3500mAh 3 Cell Laptop Battery

The Dell Original 42Wh 11.4V 3500mAh 3 Cell Laptop Battery, compatible with Inspiron 5480, 5488, Latitude 3180, and 3189, boasts a sleek black design. Utilizing 3-cell lithium-ion technology, this Dell laptop battery offers a capacity of 42Wh, ensuring prolonged usage and reliability, ideal for powering your laptop through extended work sessions with ease.

Brand: Dell
Cell Composition: Lithium Ion
Voltage: 11.4 volts
Weight: 400 g
Dimensions: 49 x 191 x 450 Millimeters

Pros	Provides extended usage time Optimal performance and compatibility Lightweight and compact design
Cons	None so far

Buy Dell Original 42Wh 11.4V 3500mAh 3 Cell Laptop Battery

2. Dell Original Battery M5Y1K Inspiron

The Dell Original Battery M5Y1K, compatible with Inspiron 5558, 3458, 3558, 3551, 5558, 3451, 5758, and Vostro 3458, 3558, offers a reliable power solution. With a capacity of 2600mAh and 14.6V, this Dell laptop battery ensures prolonged usage, ideal for long workdays or extended periods of productivity without interruption.

Brand: Dell
Cell Composition: Lithium Ion
Voltage: 14.6 Volts
Weight: 450 g
Dimensions: 8.6 x 26.8 x 42.8 Centimeters

Pros	Compatible with multiple Dell Inspiron and Vostro models High capacity of 2600mAh for extended usage Designed for long-lasting performance
Cons	Compatibility is limited to specific Dell models

Buy Dell Original Battery M5Y1K Inspiron

3. HP KI04 4-Cell Li-Ion Original Laptop Battery

HP KI04 4-Cell Li-Ion Original Laptop Battery with 14.8 Volts Compatible with HP Pavilion

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The HP KI04 4-Cell Li-Ion original laptop battery, boasting 14.8 Volts, is tailored for HP Pavilion models, including 14-ab000 to 14-ab099, 15-ab000 to 15-ab099, 15-ag000 to 15-ag099, and 17-g000 to 17-g099. This HP laptop battery offers swift recharge times of 2.1 hours while the system is on and 2.5 hours while off. Weighing just 0.22 kg, it comes backed with a 1-year warranty from HP, ensuring coverage against defects or issues.

Brand: HP
Cell Composition: Lithium
Voltage: 14.8 Volts
Weight: 0.22 Kilograms
Dimensions: 27.5 x 3.3 x 2.1 Centimeters

Pros	Compatible with a range of HP Pavilion models Swift recharge times of 2.1 hours (System ON) and 2.5 hours (System OFF) Lightweight design for portability
Cons	Limited compatibility with specific HP Pavilion models

Buy HP KI04 4-Cell Li-Ion Original Laptop Battery

4. HP JC04 41W 4-Cell Li-Ion Original Laptop Battery

HP JC04 41W 4-Cell Li-Ion Original Laptop Battery

39% Off

₹2,429₹3,999

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The HP battery is compatible with various HP models including 14g-br000, 14q-bu000, 14-bw000, 14g-bx000, 14q-by000, 15-bs000, 15g-br000, 15q-bu000, 15-bw000, 15g-bx000, and 15q-by000. It offers a swift recharge time of 2.1 hours when the system is on and 2.5 hours when off. Backed by a 1-year warranty from HP, it ensures uninterrupted productivity or serves as a convenient spare.

Brand: HP
Cell Composition: Lithium Ion
Voltage: -
Weight: 230 g
Dimensions: 35 x 274 x 21 Millimeters

Pros	Compatible with a wide range of HP notebook models Swift recharge time of 2.1 hours and 2.5 hours Backed by a 1-year warranty
Cons	Limited compatibility with specific HP notebook models

Buy HP JC04 41W 4-Cell Li-Ion Original Laptop Battery

5. Dell Inspiron 15 (3 Cell) Battery

Dell Inspiron 15 (5568/5567) 13 (5368/5378) 7368 42Whr 3Cell Battery (FW8KR)

39% Off

₹2,430₹3,999

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The Dell Inspiron 15 (5568/5567), 13 (5368/5378), 7368 42Whr 3 Cell Battery (FW8KR) is a Lithium-ion battery featuring 3 cells with a voltage of 11.4v and a capacity of 3650 mAh. This battery is designed to provide reliable power for your Dell Inspiron laptops, ensuring uninterrupted usage during work or leisure activities.

Brand: Dell
Cell Composition: Lithium Ion
Voltage: 11.4 volts
Weight: 299 g
Dimensions: 8.9 x 17.8 x 0.8 Centimeters

Pros	High capacity of 42Whr for extended usage. Compatible with multiple Dell Inspiron models
Cons	Compatibility with specific Dell Inspiron models

Buy Dell Inspiron 15 (3 Cell) Battery

6. WISTAR XCMRD Battery for Dell Inspiron 15

WISTAR XCMRD Battery for Dell Inspiron 15 3000 Series 15 3521 3537 3531 3542 3543 3541 3878 15R 5521 5537 17 3721 3737 17R 5737 5721 14 3421 3442 3443 Latitude 3440 3540 P28F P40F P26E T1G4M 49VTP

38% Off

₹1,539₹2,499

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The WISTAR XCMRD Battery is tailored for various Dell Inspiron and Latitude models, boasting a voltage of 11.1V and a capacity of 4400mAh with a 6-cell Li-ion design. It promises stable performance, long backup times, fast charges, and low power consumption, though users are advised to confirm compatibility before purchase.

Brand: WISTAR
Cell Composition: Lithium Ion
Voltage: 11.1 volts
Weight: 170 g
Dimensions: 50 x 50 x 50 Millimeters

Pros	Compatible with various Dell Inspiron and Latitude models, offering versatility Extended backup time and stable performance Fast charging capability Low power consumption
Cons	Requires careful compatibility checking due to the wide range of supported models

Buy WISTAR XCMRD Battery for Dell Inspiron 15

7. Laptrix H-P OA04 Laptop Battery

Laptrix H-P OA04 Laptop Battery Compatible for HP OA04 OA03 740715-001 F3B94AA HP 240 G2 240 G3 250 G2 250 G3 HP 14-g HP 14-r, HP 15-g, HP 15-r, Compaq, 14-a, HSTNN-IB5S, 740004-141, OA04041, J1U99AA

51% Off

₹1,179₹2,399

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The Laptrix HP OA04 laptop battery is compatible with various HP models including OA04, OA03, 740715-001, F3B94AA, HP 240 G2, 240 G3, 250 G2, 250 G3, HP 14-g, HP 14-r, HP 15-g, HP 15-r, Compaq 14-a, and more. It features a Li-ion type with a capacity of 2200mAh and 14.8V voltage, ensuring reliable performance. The black-coloured battery comes with a 41whr 4-cell design and is covered by a 12-month warranty across India.

Brand: Laptrix
Cell Composition: Lithium Ion
Voltage: 14.8 Volts
Weight: 180 Grams
Dimensions: 20 x 9 x 5 Centimeters

Pros	Versatility and convenience Dependable operation and prolonged usage Comes with a 12-month warranty across India
Cons	Limited compatibility with only HP and Compaq models

Buy Laptrix H-P OA04 Laptop Battery

8. Lapcare LHOBTS5805 4-Cell Laptop Battery

Lapcare LHOBTS5805 4-Cell 14.8V 2000mAh Laptop Battery for HP HS04 (Black)

40% Off

₹1,499₹2,499

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Lapcare LHOBTS5805 is a black 4-cell 14.8V 2000mAh laptop battery designed for HP HS04. It comprises lithium-ion cells and is compatible with HP 240, 245, 250, 255 G4 Notebook PC models. Recommended for laptop use, it's rechargeable and weighs 225 grams, boasting a battery capacity of 2000 Milliamp Hours.

Brand: Lapcare
Cell Composition: Lithium Ion
Voltage: 14.8 volts
Weight: 225 Grams
Dimensions: ‎36.1 x 11.3 x 5.1 cm

Pros	High capacity ensures prolonged usage Compatible with multiple HP notebook models Versatility and convenient
Cons	Relatively heavy item weight of 420 grams

Buy Lapcare LHOBTS5805 4-Cell Laptop Battery

9. Lapcare CQ42 6-Cell Battery for HP Laptops

Lapcare CQ42 6-Cell Battery for HP Laptops

40% Off

₹1,499₹2,499

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The Lapcare CQ42 6-cell battery is a Li-ion battery designed for HP laptops, featuring a voltage of 10.8V and a battery capacity of 4000mAh/43Wh. It includes the Lapcare protection plan for added security. Compatible with HP Pavilion, CQ32, CQ42, CQ62, 593553-001, MU06, MU09, and G6 series laptops.

Brand: Lapcare
Cell Composition: Lithium Ion
Voltage: 12 volts
Weight: 250 g
Dimensions: 26 x 12 x 6 Centimeters

Pros	Ample capacity guarantees extended runtime before needing a recharge. Supports a range of HP laptop models
Cons	Voltage of 10.8V may not be compatible with all HP laptop models

Buy Lapcare CQ42 6-Cell Battery for HP Laptops

10. WISTAR HS04 Laptop Battery for HP

WISTAR HS04 Laptop Battery for HP 807956-001 807957-001 HS03 807612-421 807611-221 240 G4 HSTNN-LB6U HSTNN-DB7I HSTNN-LB6V TPN-I119 807611-421 807611-131 Tpn-I120 Tpn-I124

48% Off

₹1,299₹2,499

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The WISTAR HS04 laptop battery is compatible with various HP models, including 240 G4, featuring part numbers 807956-001, 807957-001, HS03, 807612-421, 807611-221, HSTNN-LB6U, HSTNN-DB7I, HSTNN-LB6V, TPN-I119, 807611-421, and 807611-131. It operates at a voltage of 14.8V and boasts a 2200mAh capacity with a 4-cell Li-ion design.

Brand: WISTAR
Cell Composition: Lithium Ion
Voltage: 14.8 volts
Weight: 180 g
Dimensions: 7 x 5 x 3 Centimeters

Pros	Compatible with various HP models High capacity ensures dependable performance and prolonged usage
Cons	None

Buy WISTAR HS04 Laptop Battery for HP

FAQs related to the best laptop batteries under 3000

1. How long do batteries last in laptops?

Ans. The lifespan of laptop batteries varies depending on factors such as usage patterns, battery capacity, and the age of the battery itself. Generally, laptop batteries can last anywhere from 2 to 5 years before their performance begins to degrade significantly, requiring replacement.

2. How many hours will a 42-Watt-hour battery last?

Ans. The duration a 42-Watt-hour battery will last depends on the power consumption of the device it is powering. To calculate the approximate runtime, divide the battery capacity (in Watts-hours) by the power consumption (in Watts) of the device.

3. How long does a 9w battery last?

Ans. The duration a 9-watt battery will last depends on the power consumption of the device it is powering, following the same principle as the 42-watt-hour battery calculation. If the device consumes 9 Watts of power, the battery may last around 1 hour.

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