{"product_id":"thomson-28106fe1-ultra-slim-dect-replacement-battery-37v-500mah-li-ion","title":"Thomson 28106FE1 Ultra Slim DECT Replacement Battery 3.7V 500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eThomson 28106FE1 Ultra Slim Dect \/ 28115 \/ 28118 — 3.7V Li-ion Replacement Battery (PL-043043)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 500mAh (1.85Wh) Li-ion replacement battery for the Thomson 28106FE1 Ultra Slim Dect cordless handset and related models. It also fits the 28115, 28118, and RU1873GE3-A handsets. OEM part number PL-043043. Slim 43 × 28 × 4mm profile matches the original battery bay.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e28106FE1, 28115, 28118, RU1873GE3-A compatibility:\u003c\/strong\u003e\n    These Thomson handsets share the same 3.7V cell architecture, identical PL-043043 connector pinout, and the same BMS voltage acceptance range — one battery fits all four models without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on a DECT handset bench rig. The BMS accepted charge from the base station without error, reached full voltage cleanly, and held standby draw within spec across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Li-ion cells in slim DECT handsets can sit in storage well below their resting voltage. Place the handset in the base immediately after fitting and leave it on charge for a full 16 hours before first use — this allows the cell to reach rated capacity from a depleted state rather than a partial one.\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\"\u003eA Li-ion cell shipped from storage arrives partially discharged — often below 3.5V. The first few charge cycles from that depleted state do not reach the cell's full 500mAh rated capacity. Capacity normalises after 3 to 5 full charge and discharge cycles. If talk time is still noticeably short after five cycles, check the base charging contacts for oxidation and clean them with a dry cloth.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with the base after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome Thomson DECT handsets store pairing data in volatile memory that resets when the battery is fully removed. Swapping the battery cuts all power momentarily, and the handset comes back up unpaired. To re-register, hold the paging or find button on the base for five seconds, then navigate to the handset's registration menu and follow the base-pairing sequence. The handset will re-pair at full DECT range once registered.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340057739354,"sku":"BWCS-P28115CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340057772122,"sku":"BWCS-P28115CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340057804890,"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\/thomson-28106fe1-ultra-slim-dect-replacement-battery-37v-500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}