{"product_id":"cidco-b650-replacement-battery-36v-1200mah-ni-mh","title":"Cidco B650 Cordless Phone Compatible Battery 3.6V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCidco B650 \/ CD900 \/ CL900 Series — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 1200mAh Ni-MH replacement battery for Cidco cordless phone handsets. It fits the B650, CD900, CL900, CL901, and several additional models in the same series. When the original pack no longer holds a charge, this battery restores full handset portability without replacing the phone system.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eB650 \/ CD900 \/ CL900 series compatibility:\u003c\/strong\u003e\n    These models share the same 3.6V three-cell Ni-MH configuration, connector pinout, and physical footprint — 50.43 × 42.54 × 14.40mm. The handset's charging circuit expects a specific voltage window, and this pack matches it.\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 compatible Cidco handsets. The BMS accepted the battery without fault codes, and voltage held steady through full standby and active transmit loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless 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 shipped in partial-charge storage states require a slow initial charge to reach rated 1200mAh capacity — skipping this step means the first several cycles will underperform.\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 CL900 and CL901 after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets regulate transmit power based on available voltage from the battery. A fresh Ni-MH pack that hasn't been through conditioning cycles will sag under RF load — the handset sees lower voltage and pulls back transmit strength. This looks like reduced range but isn't a hardware fault. Three to five full charge-discharge cycles bring the cells to rated capacity and stabilise voltage delivery under load. After conditioning, transmit power returns to normal operating levels.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing a charging error or fault light on a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH batteries discharged during storage can arrive below 3.0V — some Cidco base stations read this as an invalid or missing battery and display an error light instead of beginning a charge cycle. Remove the handset, wait 10 seconds, then reseat it firmly. If the error persists, the base needs to detect a minimum threshold voltage before it initiates charging — try placing the handset in a secondary handset charger if available, or leave it seated for 30 minutes to allow trickle current to bring the pack above the acceptance threshold of approximately 3.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340028510298,"sku":"BWCS-P502CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340028543066,"sku":"BWCS-P502CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340028575834,"sku":"BWCS-P502CL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-P502CL_1.webp?v=1778367047","url":"https:\/\/batteryweb.com\/products\/cidco-b650-replacement-battery-36v-1200mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}