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HSTNN-LB51 Battery for HP Compaq 6720s and 550 laptop

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HSTNN-LB51 Battery for HP Laptop - 11.1V 4400mAh 6-Cell Li-Ion

€30.99

Tax included

Reference: BAT-HP08

Brand: OEM

⚠️ LAST UNITS - FEW LEFT

Orders before 4:00 PM (Friday 3:00 PM, Spain time) ship the same day - Delivery in 24-48h (mainland Spain and Portugal)

Only 2 to 4 units left

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EU shipping 48-96h 14-day returns 3-year warranty

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Warranty
3 years

14 days to return

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The HSTNN-LB51 battery is a replacement for HP and Compaq laptops with 11.1V and 4400mAh (58 Wh). It is compatible with over 80 part numbers and models such as HP 550 or Compaq 6720s. New, with a 3-year warranty and shipping from Spain in 24-48 h.

HSTNN-LB51

HSTNN-LB51 Battery for HP Laptop - 11.1V 4400mAh 6-Cell Li-Ion

New 6-cell Li-Ion replacement, 58 Wh. 3-year warranty.

4400 mAh / 58 Wh
11.1 V 6 Li-Ion Cells
New

Key features

🔋 Nominal Capacity
4400 mAh / 58 Wh for extended autonomy.
⚡ Voltage
11.1 V, compatible with systems using 10.8 V.
💡 Cell Technology
Equipped with 6 Li-Ion cells for greater durability and charge cycles.
🔧 Maximum Compatibility
Direct replacement for over 80 part numbers and dozens of HP and Compaq models.
🔌 Integrated Safety
Protection circuits against overcharge and over-discharge to protect the device.

Product description

The replacement battery with reference HSTNN-LB51 is the ideal solution to restore the autonomy of your HP or Compaq laptop. Manufactured with high-quality components and 6 Li-Ion cells, it offers a capacity of 4400 mAh (58 Wh) and a voltage of 11.1 V, guaranteeing reliable and safe performance. Each unit is checked by our technical service to ensure its perfect operation from day one.

Designed as a direct replacement, this battery is compatible with an extensive list of part numbers, including 451086-001, HSTNN-IB51, and HSTNN-IB52, and with popular laptop series such as HP 550, HP Compaq 610, 6720s, 6730s, and 6820s. Its integrated protection systems against overvoltage and undervoltage protect both the battery and the computer.

Capacity: 4400 mAh / 58 Wh
Voltage: 11.1 V (compatible 10.8 V)
Cells: 6 cells, Li-Ion technology
Condition: New component
Warranty: 3 years

For optimal performance, it is recommended to perform a full charge and discharge cycle (charge to 100% and let it discharge to 15-20%) during the first uses. This calibration process helps the operating system recognize the battery's actual capacity. Avoid exposure to extreme temperatures and do not leave the battery completely discharged for long periods to maximize its lifespan.

Who is this product for?

For technical services and private users who need to restore the autonomy of HP and Compaq laptops compatible with the HSTNN-LB51 reference.

Ideal for

Replacement of a depleted battery in an HP 550
Restore the portability of a Compaq 6720s
Laptop repair that won't turn on without being plugged in
Have a spare battery for long working days

Technical specifications

Electrical Specifications
Capacity	4400 mAh
Energy	58 Wh
Voltage	11.1 V
Number of Cells	6
Technology	Li-Ion

Physical Characteristics
Color	Black
Weight	330 g
Dimensions	267x61x21 mm

Safety and Warranty
Overcharge Protection	Yes
Over-discharge Protection	Yes
Condition	New
Warranty	3 years

Compatibility

Compatible part numbers

451085-121
451085-141
451085-142
451085-361
451085-621
451085-661
451086-001
451086-121
451086-122
451086-141
451086-142
451086-161
451086-162
451086-322
451086-361
451086-362
451086-421
451086-621
451086-661
451568-001
456664-001
456864-001
456865-001
464119-142
464119-143
464119-162
464119-361
464119-362
464119-363
484787-001
490306-001
491278-001
491279-001
491654-001
491657-001
496897-001
500764-001
500765-001
501870-001
572187-001
572188-001
572190-001
572191-001
DD06
DD08
DD08063
GJ655AA
HSTNN-139C
HSTNN-154C
HSTNN-FB51
HSTNN-FB52
HSTNN-I39C
HSTNN-I40C
HSTNN-I48C
HSTNN-I48C-A
HSTNN-I48C-B
HSTNN-I49C
HSTNN-I50C
HSTNN-I50C-B
HSTNN-I54C
HSTNN-I64C
HSTNN-I64C-5
HSTNN-I65C
HSTNN-I65C-5
HSTNN-IB51
HSTNN-IB52
HSTNN-IB55
HSTNN-IB62
HSTNN-L54C
HSTNN-LB51
HSTNN-LB52
HSTNN-OB51
HSTNN-OB52
HSTNN-OB62
HSTNN-XB51
HSTNN-XB52
HSTNN-XB62
KH386AV
KU532AA
KU532AAR
NA823ES
NBP6A96
NBP8A97

Compatible laptop models

HP 550
HP 610
HP 615
HP Business Notebook 6720s
HP Compaq 550
HP Compaq 610
HP Compaq 615
HP Compaq 6700s
HP Compaq 6720
HP Compaq 6720S
HP Compaq 6730S
HP Compaq 6735S
HP Compaq 6800
HP Compaq 6800s
HP Compaq 6820
HP Compaq 6820s
HP Compaq 6830
HP Compaq 6830s
HP Compaq 6835s
Compaq 600
Compaq 610
Compaq 615
Compaq 6730s
Compaq 6735s
Compaq 6830s
Notebook 6720s/CT
Notebook 6730s/CT

Always check the part number printed on your original part before ordering; if in doubt, contact us with the exact model of your device.

Frequently asked questions

How can I be sure this battery is compatible with my HP Compaq 6730s?

To confirm compatibility, the most reliable way is to remove the battery from your laptop and check the part number printed on the label. If it matches HSTNN-LB51 or any of the more than 80 codes listed under 'Compatible Part Numbers', this battery will work for you. You can also verify that your model, HP Compaq 6730s, appears in our 'Compatible Models' list.

My original battery indicates 10.8V and this one 11.1V, is that a problem?

No, it is not a problem. 10.8V and 11.1V voltages are fully compatible with each other in 6-cell batteries. The difference is due to the way the nominal voltage of Li-Ion cells is measured (3.6V or 3.7V). Our product will work perfectly in your device without any risk.

Is it necessary to calibrate the battery the first time I use it?

Yes, it is highly recommended. For optimal performance, perform a full charge cycle up to 100% and then let the laptop discharge naturally to 15-20% before recharging it. This initial process helps your laptop's operating system recognize the actual capacity of the new battery and display accurate percentages.

What is the warranty and how do returns work if it doesn't fit?

The battery has a 3-year warranty for private customers and 1 year for professionals. If it doesn't fit or you change your mind, you have 14 days to return it. You can arrange the return shipping yourself or request a home pickup for 8.90 € in Spain and Portugal, which will be deducted from the refund.

How long does the order take to arrive?

All orders are shipped from our warehouse in Spain. For Spain and Portugal, the delivery time is 24-48 business hours. For France, the period is 48-72 hours, and for Germany and the rest of the EU, it can vary between 2 and 5 business days.

Warranty, returns and shipping

Warranty: 3-year warranty (1 year for business customers)
Returns: 14-day returns (ship it yourself or €8.90 home pickup in Spain and Portugal)
Shipping: EU delivery 48-120 h
Condition: New

Brand OEM

Reference BAT-HP08

Data sheet