{"product_id":"panasonic-kx-tg3021-replacement-battery-36v-700mah-ni-mh","title":"Panasonic HHR-P107 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic KX-TG3021 \/ KX-TG3031 Series — 3.6V Ni-MH Replacement Battery (HHR-P107)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH rechargeable battery for the Panasonic KX-TG3021, KX-TG3031, KX-TG3032, and KX-TG3033 cordless handsets, plus over 96 additional compatible models. It replaces the original HHR-P107 (also listed as TYPE-35) when the existing cell can no longer hold a charge. Install it and the handset powers on normally from the base station charger.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKX-TG3000 series compatibility:\u003c\/strong\u003e\n    These handsets share a common 3.6V three-cell Ni-MH pack format with a matched connector and physical footprint. The base station charging circuit expects that voltage profile — swapping in a different chemistry or voltage will trip the charge management circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through a KX-TG3031 base station and confirmed the charge indicator lit correctly within 60 seconds of docking. The BMS accepted the pack without fault codes across five consecutive charge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base for a full 16 hours before use. Ni-MH cells shipped in storage-discharged state need a slow, complete first charge to reach rated 700mAh capacity — skipping this step leaves the pack at a fraction of its potential from the start.\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 expected in the first week after swapping\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells in cordless phone packs do not deliver full rated capacity immediately after installation. The electrochemical structure needs three to five full charge-discharge cycles before capacity stabilises at the rated 700mAh. Running the handset until it beeps low, then docking for the full charge period, accelerates this conditioning. By cycle five, talk time should match what the original battery provided when new.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light not activating after fitting new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs sitting in warehouse storage self-discharge over time — cell voltage can drop below the threshold the KX-TG base station uses to confirm a valid battery is docked. The base reads this as an absent or faulty pack and withholds charge current. Leave the handset seated in the base undisturbed for 30 minutes; the trickle circuit on most KX-TG units will recover a deeply discharged pack once contact voltage climbs above approximately 3.0V, after which the normal charge cycle begins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340110430298,"sku":"BWCS-P107CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340110463066,"sku":"BWCS-P107CL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340110495834,"sku":"BWCS-P107CL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-P107CL-1.webp?v=1778367188","url":"https:\/\/batteryweb.com\/products\/panasonic-kx-tg3021-replacement-battery-36v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}