{"product_id":"northwestern-bell-35818-replacement-battery-36v-700mah-ni-mh","title":"NorthWestern Bell 35818 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNorthWestern Bell 35818 Series — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery for the NorthWestern Bell cordless phone handset. It fits models 35818, 35819, 35820, 35821, and four additional variants in the same series. When the original pack no longer holds a charge, this is the direct replacement.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e35818 series compatibility:\u003c\/strong\u003e\n    These models share the same handset housing, connector orientation, and 3.6V power rail. The BMS on each handset accepts a standard Ni-MH charge profile, so no firmware pairing or handshake is required between the pack and base station.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on the handset platform. The BMS accepted the Ni-MH charge curve without fault, and voltage held steady across standby and active RF transmission loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on new Ni-MH packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells that ship in a partially discharged state need that slow initial charge to reach rated capacity — skipping it leads to shorter talk time from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping on the 35818 after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 35818 handset boosts its RF transmit power directly from the battery rail. When a Ni-MH pack is worn or not fully conditioned, voltage sags under the transmit load. That sag is enough to reduce effective range — the handset is still on, but the signal weakens at the edges of coverage. A fully charged, freshly conditioned pack holds the rail steady and restores the original transmission strength.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with the base after battery removal\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome DECT handsets lose their pairing data when power is fully cut during a battery swap. The 35818 stores pairing in volatile memory that depends on a small residual charge. If the handset does not register on the base after the new battery is installed, re-pair it manually: press and hold the page or find button on the base for five seconds until the handset searches and locks back to the base station.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340016123994,"sku":"BWCS-CPB8011-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340016156762,"sku":"BWCS-CPB8011-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340016189530,"sku":"BWCS-CPB8011-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CPB8011-1.webp?v=1778367024","url":"https:\/\/batteryweb.com\/products\/northwestern-bell-35818-replacement-battery-36v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}