Razer NAGA PRO Replacement Battery 3.7V 650mAh CP-RC30D
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Razer NAGA PRO Replacement Battery 3.7V 650mAh CP-RC30D - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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.
Disclaimer
Disclaimer
⚠️ 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.
Razer NAGA PRO Replacement Battery 3.7V 650mAh CP-RC30D - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
650mAh
Razer NAGA PRO / BASILISK ULTIMATE — 3.7V Li-Polymer Replacement Battery (CP-RC30D)
This is a 3.7V 650mAh Li-Polymer battery for the Razer NAGA PRO and BASILISK ULTIMATE wireless gaming mice. It replaces part number CP-RC30D and fits models RZ01-03420 and RZ01-034200100. Swap it in when the original cell no longer holds a charge or the mouse stops powering on entirely.
- NAGA PRO and BASILISK ULTIMATE compatibility: Both mice share the same internal battery bay geometry, connector pinout, and BMS handshake voltage. A single cell spec — 3.7V nominal, flat Li-Polymer form factor — covers both platforms without modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a NAGA PRO unit. The BMS accepted the cell cleanly, reported correct charge state in Razer Synapse, and no low-voltage cutoff errors were triggered during the session.
- Post-swap sensor calibration tip: After installing a new cell in a NAGA PRO, charge to full before first use — the onboard power management calibrates its gauge against a full-capacity reference. Skipping this step can cause Synapse to misread remaining charge by a wide margin for the first several cycles.
Why the NAGA PRO won't reconnect after a battery swap
When the cell drops to zero, the NAGA PRO's onboard firmware loses its stored pairing state. Re-inserting a charged battery restores power but doesn't automatically restore the USB receiver link. Unplug the HyperSpeed USB dongle, wait five seconds, and plug it back in. If the cursor still doesn't appear, hold the pairing button on the underside of the mouse for three seconds to force a re-pair cycle.
Mouse pointer stuttering or cutting out before the battery indicator hits empty
Li-Polymer cells develop high internal resistance as they age, causing voltage to sag under the load of the optical sensor and 2.4GHz transmitter firing simultaneously. The NAGA PRO interprets this momentary sag as a low-power event and drops its polling rate to compensate — which shows up as lag or stuttering. Synapse may still show 20–30% remaining when this starts. Replacing the cell resolves it; the symptom is a capacity and resistance issue, not a firmware one. A fresh CP-RC30D cell should hold above 3.5V under load during normal use.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Razer
- 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 NAGA PRO won't show up on my PC at all after I replaced the battery — the USB dongle light is off. What's wrong?
A full battery drain wipes the stored pairing data, so the dongle has nothing to reconnect to even with a fresh cell installed. Unplug the HyperSpeed receiver, wait five seconds, then plug it back in. If the dongle light stays off, hold the pairing button on the underside of the mouse for three seconds to force a fresh link.
Razer Synapse is showing 100% charge but the mouse dies way sooner than it used to — is the battery reading broken?
The reading isn't broken — the cell is. An aged Li-Polymer cell loses usable capacity while still reporting a full charge at rest voltage. Under sensor and wireless transmitter load, the voltage collapses faster than the gauge expects. Replacing the cell with a fresh CP-RC30D (3.7V, 650mAh) will re-align what Synapse reports with actual runtime behaviour.
The NAGA PRO charges fine but the cursor starts lagging and skipping when the battery drops below half — is that a software issue?
It's not software. As the cell discharges below roughly 3.6V, the NAGA PRO's power management reduces the sensor polling rate to protect the remaining charge. That reduction is what causes the lag and skip. Updating Synapse won't fix it. The fix is a new cell — once voltage stays stable under load, the polling rate stays at its set value.
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