{"product_id":"siemens-gigaset-sl78h-replacement-battery-37v-950mah-li-ion","title":"Siemens Gigaset SL78H 3.7V 950mAh Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSiemens Gigaset SL78H \/ SL780 \/ SL785 — 3.7V Li-ion Replacement Battery (V30145-K1310K-X444)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 950mAh Li-ion battery for the Siemens Gigaset SL78H handset and related SL780, SL785, and SL788 models. It slots directly into the handset battery compartment and connects to the same contacts as the original pack. Voltage and capacity match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSL78H \/ SL780 \/ SL785 \/ SL788 platform fit:\u003c\/strong\u003e\n    These handsets share the same slim battery bay, 3.7V supply rail, and contact layout. One battery SKU covers the full SL7xx family because the BMS handshake and connector geometry are identical across the range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on SL78H hardware. The BMS accepted the cell without error, held the 3.7V nominal rail under DECT transmit load, and reached rated capacity within three full cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base immediately after fitting this battery and leave it there for a full uninterrupted charge before first use. Li-ion cells shipped in storage state need one complete charge cycle to let the BMS calibrate the state-of-charge counter accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SL78H loses range after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eDECT transmit pulses pull current in short bursts. If the replacement cell has high internal resistance — common in aged or deeply discharged packs — voltage sags under each RF burst. The handset reads that sag as low battery and reduces transmit power to protect the circuit. The result is a shorter range that looks like a pairing or antenna fault but is actually a voltage delivery issue. A new cell at full charge eliminates the sag and restores full transmit power.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery cuts power completely to the handset. Some DECT phones store pairing data in volatile memory that clears when power is lost. If the SL78H shows no base connection after fitting this battery, the handset needs to re-register. On most Gigaset bases, hold the registration button on the base unit for three seconds, then follow the handset menu to re-pair. The process takes under two minutes and does not affect other registered handsets.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339920080986,"sku":"BWCS-SX785CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339920113754,"sku":"BWCS-SX785CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339920146522,"sku":"BWCS-SX785CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SX785CL-1.webp?v=1778367002","url":"https:\/\/batteryweb.com\/products\/siemens-gigaset-sl78h-replacement-battery-37v-950mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}