HP HSTNN-Q21C Battery – Compatible Replacement

SKU: CS-CV3000NB

HP HSTNN-Q21C Battery – Compatible Replacement

Name: CutRateBatteries.com
Address: 1400 Hamlin Ave Unit I, St. Cloud, 34771, US
Telephone: 1-913-951-0249
Price range: $3.00 to $893

SKU: CS-CV3000NB

Product form

Brand new, premium-quality replacement battery for HP HSTNN-Q21C laptop. Fully compatible with original equipment and built for reliable performance and durability.

Select Battery Type Free pickup in our shop(s) Free pickup in our shop(s)

19 in stock

$51.66

In Stock

This item ships FREE - no minimums
No sales tax on orders outside Florida
Guaranteed compatible • 1-year warranty

DESCRIPTION
SPECIFICATION

Brand new, premium-quality replacement battery for HP HSTNN-Q21C laptop. Fully compatible with original equipment and built for reliable performance and durability.

Premium-quality replacement battery for HP HSTNN-Q21C laptop. This aftermarket battery is designed for long-lasting performance and is 100% compatible with HP HSTNN-Q21C equipment. It is manufactured to meet high standards for safety, fit, and function, and is guaranteed to maintain at least 80% of its rated capacity for 12 months from the date of shipment.

Battery features:

Uses the highest quality graded and sorted 'A' Grade cells.
Has resistance welded gold plated contacts for maximum performance.
Provides excellent discharge characteristics.
Uses high impact ABS and Polycarbonate plastic housings for ruggedness.
Undergone comprehensive testing including high altitude performance, vibration, mechanical shock, thermal cycling, external short circuit and overcharge test simulations.
Includes a 12-months free replacement warranty for manufacturer's defects.

We provide premium-quality compatible batteries for HP laptop, manufactured in ISO 9001-certified facilities using advanced technology. Each battery is tested throughout the production process to ensure consistent performance, durability, and compatibility with OEM standards for form, fit, and function.

Our P/N
Capacity
Chemistry
Voltage
Dimension
Warranty

CS-CV3000HL
4400 mAH
Li-Ion
10.8
205.20 x 59.20 x 37.50mm
12 Months

CS-CV3000NB
4400 mAH
Li-Ion
10.8
206.65 x 51.44 x 21.66mm
12 Months

CS-HDV9000NB
4400 mAH
Li-Ion
14.4
271.95 x 52.70 x 21.80mm
12 Months

CS-CV3000HM
6600 mAH
Li-Ion
10.8
206.73 x 61.59 x 43.97mm
12 Months

CS-HDV9000HB
6600 mAH
Li-Ion
14.4
271.00 x 55.80 x 41.10mm
12 Months

CS-CV3000HB
8800 mAH
Li-Ion
10.8
205.20 x 59.20 x 37.50mm
12 Months

FREE Shipping
No Minimums
YEARS OF SERVICE
2005-2025

This Laptop Battery Also Replaces

This Laptop Battery Also Fits In

It's always a good idea to check that the voltage we list for this battery matches the voltage on your original battery. Also be sure to match the battery part number on your battery with one of the part numbers listed above in the "This Battery Replaces" section. Or you can always call us for assistance!

All brand names, logos, and trademarks referenced on this site remain the property of their respective owners. They are used for descriptive purposes, and to demonstrate compatibility only. CutRateBatteries.com is not affiliated with, or endorsed by any brand name manufacturer. We do not sell original name-brand batteries. CutRateBatteries.com limitation of liability is strictly limited to the purchase price of the product. In no event shall we be responsible for incidental or consequential damages of any kind. Users accept all CutRateBatteries.com policies expressed on this site. Use of the site constitutes acceptance of our Terms of Use. © 2005 - 2025 CutRateBatteries.com - All Rights Reserved.
CutRateBatteries.com is a service of Cut-Rate Batteries, LLC.

Our Commitment to Accessibility. Cut-Rate Batteries is committed to making our website's content accessible and user friendly to everyone. If you are having difficulty viewing or navigating the content on this website, or notice any content, feature, or functionality that you believe is not fully accessible to people with disabilities, please call our Customer Service team at 1-913-951-0249 or email our team at cs@cutratebatteries.com with “Disabled Access” in the subject line and provide a description of the specific feature you feel is not fully accessible or a suggestion for improvement. We take your feedback seriously and will consider it as we evaluate ways to accommodate all of our customers and our overall accessibility policies. Additionally, while we do not control such vendors, we strongly encourage vendors of third-party digital content to provide content that is accessible and user friendly.

Worked great in my Bobsweep Robo Vacuum.

I ordered this as a replacement battery for my Bobsweep robot vacuum. I charged it and it worked perfectly. It was also $30 cheaper than their replacement battery.

The battery is working great so far thank you very much I appreciate it.

The battery is working great thank you very much.

Excellent

I ordered this battery for my Marshall Emberton II Bluetooth speaker. My existing battery was going dead in a few minutes. I put this one in my speaker, it fit perfectly. I charged it up overnight and have used it all day long. It’s as good or better than the OEM battery. Thanks.

Correct battery for my old Craftsman cordless drill.

JBL GSP872693 01 Battery - Compatible Replacement

Installed in Flip4. No problems. Works nicely. House still standing : ).

CS-CV3000NB - Li-ion 4400 mAh 10.8V

CS-HDV9000NB - Li-ion 4400 mAh 14.4V

CS-CV3000HM - Li-ion 6600 mAh 10.8V

CS-HDV9000HB - Li-ion 6600 mAh 14.4V

CS-CV3000HB - Li-ion 8800 mAh 10.8V