{"product_id":"netgear-nighthawk-ac1900-replacement-battery-108v-2200mah-li-ion","title":"Netgear PB022-100NAS Nighthawk AC1900 10.8V 2200mAh Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNetgear Nighthawk AC1900 — 10.8V Li-ion Replacement Battery (PB022-100NAS)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 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.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAC1900 modem backup system:\u003c\/strong\u003e\n    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.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    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.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle firmware acceptance:\u003c\/strong\u003e\n    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.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVoIP dropping during outage while data stays up\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 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.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eModem displaying a battery fault error after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 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.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333529239642,"sku":"BWCS-CPB013RC-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333529272410,"sku":"BWCS-CPB013RC-2","price":62.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333529305178,"sku":"BWCS-CPB013RC-3","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CPB013RC-1.webp?v=1778212933","url":"https:\/\/batteryweb.com\/products\/netgear-nighthawk-ac1900-replacement-battery-108v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}