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USAbatteries.com stocks 3 compatible replacement batteries for the HP HDX series. Replacement batteries in this category are priced at $56.99.

The HP HDX line, nicknamed the “Dragon” series, was a premium desktop-replacement family that HP launched in 2007 and marketed through about 2009 to 2010. Built for multimedia enthusiasts who wanted big screens and high-end entertainment power over portability, the line spans large-format models including the 16-inch HDX16 and the 18.4-inch HDX18. These machines were aimed at people setting up a living room, media room, or small home office rather than shoppers looking for a travel laptop.

HDX batteries are lithium-ion packs whose cell counts and part numbers vary by sub-series and model year. The HDX16 typically uses a 6-cell pack such as HSTNN-IB73 or 464058-121, while the larger HDX18 commonly takes a 6-cell or 8-cell pack like HSTNN-OB76, HSTNN-IB75, or 497705-001. Because of this, an HDX16-1100 and an HDX18-1000 sit close together in the same line but accept different batteries, so you need to match your exact model and original part number.

Always confirm your exact model number and the part number printed on your current battery before ordering.

Sub-Series

HDX16
HDX18

HP HDX Battery Specifications

Cell chemistry	Lithium-ion
Price	$56.99

Frequently Asked Questions

What battery does the HDX16 use?

The HP HDX16 uses a standard 6-cell lithium-ion battery, commonly part numbers HSTNN-IB73, 464058-121, or MU06 variants depending on your specific sub-model (the 16-1000, 16-1100, or 16-1200). Because the exact pack can differ within the HDX16 family, check the part number printed on your current battery before ordering. At usabatteries.com a replacement runs $56.99. Matching both the model number and the original part number is the surest way to get a battery that fits the bay and connector correctly.

How do I find the right battery for my HDX model?

Start with two things: your full model number (for example HDX16-1100 or HDX18-1000) and the part number printed on your original battery (for example HSTNN-IB73 for many HDX16 units or HSTNN-OB76 for HDX18 units). The HDX16 generally takes a 6-cell pack, while the HDX18 can use a 6-cell or 8-cell pack, so the model alone is not always enough. Matching the printed part number confirms the right voltage, cell count, and physical fit for your laptop.

How much does a HDX replacement battery cost?

An HP HDX replacement battery is $56.99 at usabatteries.com. That single price covers the lithium-ion packs we stock for this line, including 6-cell options for the HDX16 (such as HSTNN-IB73) and 6-cell or 8-cell options for the HDX18 (such as HSTNN-OB76 or 497705-001). Confirm your exact model and original part number before checkout so the battery you order matches the bay and connector on your machine.

Are HDX batteries interchangeable?

Not across the whole line. The HDX16 and HDX18 use different packs, so an HDX16 battery (like HSTNN-IB73) will not reliably fit an HDX18, which often uses HSTNN-OB76 or 497705-001 and may carry a higher cell count. Even within one sub-series, the 16-1000, 16-1100, and 16-1200 can call for different part numbers. Always confirm interchangeability by comparing the part number on your original battery, not just the model family name.

What differs between the HDX sub-series batteries?

The main differences are cell count and physical pack design. The 16-inch HDX16 typically uses a 6-cell lithium-ion pack (HSTNN-IB73, 464058-121), while the larger 18.4-inch HDX18 can use a 6-cell or 8-cell pack (HSTNN-OB76, HSTNN-IB75, 497705-001). The higher cell count on some HDX18 units changes capacity and the shape of the battery bay, which is why the two sub-series are not cross-compatible. Always match your specific part number.

Where do I find the battery part number?

Remove the battery and look at the label on the pack itself. You will see an HP code such as HSTNN-IB73 or 464058-121 on many HDX16 units, or HSTNN-OB76, HSTNN-IB75, or 497705-001 on HDX18 units. Power off the laptop, release the latch, slide the battery out, and read the printed string. The model number on the bottom of the laptop (for example HDX18-1000) helps confirm the match when you place your order.

Can I replace the HDX battery myself?

Yes. Both the HDX16 and HDX18 use an externally accessible battery that you can swap without tools in most cases. Power down the laptop, turn it over, slide the release latch, and lift the old pack out of its bay. Set the replacement (for example an HSTNN-IB73 for an HDX16) into the same bay and press until the latch clicks. Confirm the part number matches before installing so the new battery seats and connects properly.

What are the signs the battery needs replacing?

Watch for runtime that drops sharply, a laptop that shuts off when unplugged, or a battery that no longer charges to full. You may also see the system stay near a fixed percentage or report the pack at the end of its useful life. If your HDX16 or HDX18 only runs for a few minutes off the wall, the lithium-ion cells are worn and a replacement (priced at $56.99) restores normal portable use once you match the correct part number.