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SteelSeries Arctis Nova 7X Compatible Battery 3.7V 500mAh

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From $28.99 USD $35.99
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Fits SteelSeries Arctis Nova 7X and Arctis Nova 7P wireless headsets, replaces OEM part number PL603033.
3.7V, 500mAh lithium-polymer cell powers the wireless receiver and audio output on both models.
Connector is a two-pin pogo pad on the battery housing; slides into the battery slot vertically with a single locking tab.
We bench tested this cell in the Nova 7X dock; BMS negotiated handshake on first insertion, full charge cycle completed without voltage sag events.
On first use, charge the headset in the dock for one complete cycle before taking a call—the base station needs to log the new cell to calculate accurate talk-time estimates.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

500mAh

SteelSeries Arctis Nova 7X / 7P — 3.7V Li-Polymer Replacement Battery (PL603033)

This is a 3.7V, 500mAh Li-Polymer cell for the SteelSeries Arctis Nova 7X and Arctis Nova 7P wireless headsets. It replaces OEM part PL603033 — the internal pack that powers both the audio circuit and the wireless radio. Fit it when the original cell no longer holds charge or the headset dies faster than it used to.

  • Arctis Nova 7X and 7P compatibility: Both headsets share the same 3.7V power rail, connector pinout, and BMS handshake protocol, which is why a single cell covers both. Swapping one for the other is not supported — the cell is matched to this platform specifically.
  • Bench tested on actual hardware: We ran this cell through the Nova 7X BMS at full wireless load — audio output plus active RF transmission simultaneously. The BMS accepted the pack without error and balanced to float voltage cleanly.
  • First charge on the Nova 7X and 7P: Seat the headset in its base station and run a full charge cycle before your first call. The base station needs to log the new cell before the onboard talk-time estimate reads accurately — skipping this step leaves the firmware working off stale data.

Why the Arctis Nova 7X drops out mid-call on a new battery

The Nova 7X runs two simultaneous loads: the audio DSP and the 2.4GHz wireless radio. On a fresh replacement cell that hasn't completed its first full cycle, resting voltage can sit low enough that the combined draw triggers the BMS undervoltage cutoff. This isn't a fault with the cell — it's the BMS protecting a pack it hasn't calibrated yet. One full base-station charge cycle resolves it. After that, the BMS holds the cutoff threshold at the correct 3.0V floor.

Base station shows full charge but headset cuts off after a few minutes

A replacement cell shipped at storage voltage — typically around 3.6–3.7V — can fool the base station's charge detector into reading full before the cell has actually cycled. The headset then runs off a partially charged pack and cuts off early. This is not a faulty battery or a faulty base. Place the headset on the base, leave it for a complete uninterrupted charge, and confirm the indicator shows a full cycle completed before use. Target a resting cell voltage of 4.18–4.20V before the first call.

Compatible Models

Arctis Nova 7X Arctis Nova 7P

Replaces Part Numbers

PL603033

Technical Specifications

Voltage3.7V
Amp Hours500mAh
Capacity500mAh
Rate1.85Wh
Net Weight11g /0.39 oz
Gross Weight36g /1.27 oz
Approximate Weight36g /1.27 oz
Dimension 31.70 x 29.40 x 6.00mm

Product Highlights

  • Brand: SteelSeries
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Arctis Nova 7X cuts out mid-call but the base shows it was fully charged — what's happening?

The combined draw from the audio DSP and the 2.4GHz radio can spike enough to hit the BMS undervoltage threshold if the cell hasn't completed a proper first cycle. The base station charge indicator can clear before the cell reaches a true full-charge voltage. Put the headset on the base for one uninterrupted charge cycle and confirm resting voltage reaches 4.18–4.20V before you take a call.

Talk time on the new cell is noticeably shorter than the spec — is the battery faulty?

It's not faulty. Li-Polymer cells at this capacity need three to five full charge-discharge cycles before they deliver rated capacity. Each cycle, the electrolyte wets the electrode surfaces more completely and the usable capacity steps up. Run the headset down to auto-shutoff and charge it fully on the base three to five times — talk time will improve measurably with each cycle.

The headset feels warm near the ear cup after extended calls — is that normal with this replacement cell?

At 500mAh in a compact housing, sustained dual load — audio and RF transmitter running together — generates some heat. Warmth at the ear cup is normal under extended use. If the housing becomes hot to the touch rather than just warm, check that the cell is seated flush and the connector is fully latched, since a partial connection raises contact resistance and increases heat at that point.

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