{"product_id":"philips-id-555-replacement-battery-37v-500mah-li-ion","title":"Philips ID 555 Cordless Phone Compatible Battery 3.7V 500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips ID 555 \/ ID 5551B \/ ID 5552B — 3.7V Li-ion Replacement Battery (5-2762)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 500mAh Li-ion battery for the Philips ID 555 series cordless DECT handsets. It fits the ID 555, ID 5551B, ID 5552B, and MC-163-500 models. It also cross-references OEM part numbers 5-2770 and BF021P.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eID 555 series compatibility:\u003c\/strong\u003e\n    The ID 5551B and ID 5552B share the same 3.7V single-cell Li-ion pack and connector pinout as the base ID 555. The BMS handshake on all three models accepts the same charge profile, so one cell covers the full lineup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the Philips base station charging circuit and confirmed the BMS accepted the charge without triggering a fault cutoff. Voltage held steady at 3.7V nominal through full discharge and recharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on a Philips DECT handset:\u003c\/strong\u003e\n    Li-ion cells ship at a partial state of charge for transport safety. Place the handset in the base and leave it for a full uninterrupted charge cycle before first use — the Philips base charges at a low current that takes longer than a USB charger would.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the ID 555 loses range after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DECT radio module in the ID 555 draws a short current spike every time it transmits. If the cell's internal resistance is elevated — common in aged or deeply discharged packs — voltage sags under that RF load. The handset's transmit power drops as a result, which shortens usable range before any low-battery warning appears. A fresh cell with low internal resistance holds its voltage through the transmit spike and keeps the radio at full output.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light stays off or shows error after fitting new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that have been in storage can arrive below the base station's charge acceptance threshold — typically under 3.0V. The Philips base interprets this as a fault and refuses to begin charging. If the charge indicator stays dark or flashes an error, remove the handset, wait 30 seconds, and reseat it firmly. If the problem persists, the cell needs a trickle pre-charge to bring it above 3.0V before the base circuit will take over.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340055838810,"sku":"BWCS-P28115CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340055871578,"sku":"BWCS-P28115CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340055904346,"sku":"BWCS-P28115CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-P28115CL-1.webp?v=1778367047","url":"https:\/\/batteryweb.com\/products\/philips-id-555-replacement-battery-37v-500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}