{"product_id":"crofone-adp4000-replacement-battery-36v-550mah-ni-mh","title":"Crofone ADP4000 Cordless Phone Replacement Battery 3.6V 550mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCrofone ADP4000 — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 550mAh Ni-MH battery for the Crofone ADP4000 cordless handset. It replaces the original cell pack directly, restoring power to the handset without any modification. If your handset no longer holds a charge or dies mid-call, this is the part that fixes it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eADP4000 handset compatibility:\u003c\/strong\u003e\n    The ADP4000 runs on a 3.6V NiMH cell pack at this exact form factor — 47.52 × 34.18 × 6.58mm. The connector orientation and cell arrangement match the original, so the pack seats correctly in the handset battery bay without forcing or trimming.\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 NiMH-compatible test equipment. The cells accepted charge current correctly, BMS protection tripped at expected low-voltage cutoff, and capacity stabilised by the third full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on NiMH cordless handsets:\u003c\/strong\u003e\n    After installing this battery, place the handset in the base and leave it for a full 16 hours before first use. NiMH cells in cordless phones do not reach rated capacity on the first charge — the slow first cycle conditions the cells and prevents early capacity loss.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing charging error after fitting a new NiMH pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new NiMH battery shipped from storage can sit at 1.0V per cell or lower. Some ADP4000 base stations check voltage before starting the charge cycle and refuse to charge a pack that reads below their acceptance threshold. This is not a fault with the battery or the base — it is a voltage floor check. To recover the pack, place the handset in the base and leave it undisturbed for 30 minutes. Most bases will trickle-charge a low pack until it crosses the threshold, typically around 3.0V total, then switch to normal charge mode.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after the first few charges\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells need three to five full charge-discharge cycles before they reach rated capacity. If talk time feels short immediately after installation, the cells are not yet conditioned — this is normal behaviour, not a defective battery. Run the handset until the low-battery indicator triggers, then return it to the base for a full charge. Repeat this three times and capacity will stabilise at or close to the rated 550mAh.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339953242202,"sku":"BWCS-DTW480CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339953274970,"sku":"BWCS-DTW480CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339953307738,"sku":"BWCS-DTW480CL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DTW480CL-1.webp?v=1778367002","url":"https:\/\/batteryweb.com\/products\/crofone-adp4000-replacement-battery-36v-550mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}