{"product_id":"panasonic-kx-tg2397-replacement-battery-36v-1200mah-ni-mh","title":"Panasonic HHR-P401 Cordless Phone Replacement Battery 3.6V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic KX-TG2397 \/ KX-TG2400 Series — 3.6V Ni-MH Replacement Battery (HHR-P401)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 1200mAh Ni-MH rechargeable battery for Panasonic cordless phone handsets, including the KX-TG2397, KX-TG2400, KX-TG2400B, and KX-TG2405 series. It replaces OEM part numbers HHR-P401 and HHR-P401A directly. The battery restores handset function when the original cell can no longer hold a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKX-TG2397 and KX-TG2400 series compatibility:\u003c\/strong\u003e\n    These models share the same 3.6V three-cell NiMH pack format, identical connector pinout, and physical footprint — 54.46 x 32.07 x 11.22mm — so one battery works across the entire KX-TG2400 handset family without modification.\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 KX-TG2400 platform and confirmed the base station accepts the charge state correctly, with no error light triggered during the initial acceptance phase.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells ship partially discharged; the slow first charge allows all three cells to reach balanced capacity and prevents early capacity fade.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells do not deliver rated capacity on the first cycle — or even the second or third. The chemistry requires three to five full charge-discharge cycles before the cells reach their rated 1200mAh. If talk time feels short straight out of the box, that is expected behaviour, not a fault. Run the handset to low charge and return it to the base each time; capacity improves measurably by cycle four or five.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge or error light after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH packs sitting in warehouse storage self-discharge over time and can drop to a voltage level that some Panasonic base stations read as a fault rather than a depleted cell. The base station's charge acceptance circuit expects to see a resting voltage above roughly 3.0V before it begins a normal charge cycle. If the indicator light stays red or shows an error, remove the handset, wait 30 seconds, and reseat it firmly — this resets the charge handshake. If the issue persists, confirm the battery contacts on both the handset and the base are clean and making solid contact.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340076220506,"sku":"BWCS-P401CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340076253274,"sku":"BWCS-P401CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340076286042,"sku":"BWCS-P401CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-P401CL-1.webp?v=1778367047","url":"https:\/\/batteryweb.com\/products\/panasonic-kx-tg2397-replacement-battery-36v-1200mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}