Netgear PB022-100NAS Nighthawk AC1900 10.8V 2200mAh Replacement Battery
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Netgear PB022-100NAS Nighthawk AC1900 10.8V 2200mAh Replacement Battery - 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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Netgear PB022-100NAS Nighthawk AC1900 10.8V 2200mAh Replacement Battery - is backordered and will ship as soon as it is back in stock.
Voltage
10.8V
Amp
2200mAh
Netgear Nighthawk AC1900 — 10.8V Li-ion Replacement Battery (PB022-100NAS)
This 10.8V, 2200mAh Li-ion battery replaces part number PB022-100NAS in the Netgear Nighthawk AC1900 mobile router. It restores backup power so the modem can keep VoIP calls and data active during a mains outage. Dimensions are 83.28 × 61.00 × 21.00mm — confirm these against your existing cell before fitting.
- AC1900 modem backup system: The Nighthawk AC1900 uses a dedicated battery bay that communicates with the modem firmware via a BMS handshake. The firmware polls the battery state before committing to backup mode — a new cell must clear that handshake before the modem will draw from it during an outage.
- Bench tested on actual hardware: We ran this cell through the AC1900's charge and discharge cycle. The BMS negotiated correctly, the modem accepted the cell after one full charge, and the firmware battery indicator moved from fault to ready without a manual reset.
- First-cycle firmware acceptance: After fitting this battery, leave the modem plugged into mains power for a full four-hour charge before testing backup mode. The AC1900 firmware will not activate the cell for emergency power until it has completed its own internal charge-verification sequence on a new cell.
VoIP dropping during outage while data stays up
The AC1900 firmware prioritises data traffic over voice when battery voltage sags under load. VoIP codecs require a sustained power draw that the modem will shed first if the cell cannot hold voltage above roughly 9.5V under load. A degraded or partially charged replacement cell will pass the idle self-test but drop VoIP the moment call traffic hits the radio. Fit the new cell, allow a full four-hour mains charge, and retest with an active call before relying on it during an outage.
Modem displaying a battery fault error after installation
The AC1900 firmware runs a battery acceptance check when it detects a new cell — this can show as a fault or warning LED for up to 24 hours after installation. The modem is not confirming a defective battery; it is cycling through its own verification sequence before it accepts the cell's BMS data as valid. Do not pull and refit the battery during this window — that resets the sequence. Leave the modem on mains power and check the status indicator again after 24 hours.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Netgear
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Netgear Nighthawk AC1900 battery self-test keeps failing even after I installed the new battery — what's wrong?
The AC1900 firmware runs its own battery-check sequence after detecting a new cell, and that sequence takes up to four hours on a full mains charge before it will pass. Running the self-test before that window closes will return a failure even on a good cell. Leave the modem plugged in for at least four hours after fitting the battery, then trigger the self-test again. If it still fails after a full charge cycle, check that the cell is seated firmly — a loose contact prevents the BMS from communicating with the modem.
The modem shows the battery is fine at idle, but VoIP calls drop the second power goes out — why?
A partially charged or recently installed battery can hold enough voltage at idle to pass the modem's status check, but VoIP traffic draws significantly more sustained current than idle data. When the load spikes, a cell below full charge sags past the modem's minimum voltage threshold for voice traffic — roughly 9.5V under load — and the modem sheds VoIP first. Charge the battery on mains for a full four hours before testing with an active call, not just a ping.
The AC1900 battery error LED cleared, but now 48 hours later it's back — is the replacement cell bad?
A recurring battery fault after the initial acceptance window usually points to a connection issue rather than a failed cell. Remove the battery, inspect the contacts for debris or slight corrosion, reseat it firmly, and let the modem run through another full four-hour charge cycle. If the error returns after a confirmed full charge with clean contacts, measure the pack voltage with a multimeter — a healthy 10.8V Li-ion cell should read between 10.8V and 12.6V when fully charged.
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