{"product_id":"siemens-gigaset-sl78h-replacement-battery-37v-830mah-li-ion","title":"Siemens Gigaset SL78H Compatible Battery 3.7V 830mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSiemens Gigaset SL78H \/ SL780 Series — 3.7V Li-ion Replacement Battery (V30145-K1310-X444)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 830mAh (3.07Wh) Li-ion battery replaces the factory pack in the Siemens Gigaset SL78H cordless handset and its close variants. It fits the SL780, SL785, and SL788 alongside 30 additional Gigaset models sharing the same form factor and connector. Voltage and physical dimensions match the OEM specification exactly: 52.95 × 35.10 × 4.50mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSL78H \/ SL780 \/ SL785 \/ SL788 compatibility:\u003c\/strong\u003e\n    These handsets share the same 3.7V single-cell rail, identical JST-style connector, and a BMS that accepts the same charge termination voltage. A battery from any one of these models will seat and communicate correctly in the others.\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 SL78H handset. The BMS accepted the charge curve without tripping an error, and the base station cleared its charge indicator light as expected on each run.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for DECT handsets:\u003c\/strong\u003e\n    Place the handset in the base immediately after fitting this battery and leave it there for a full 16 hours before first use. Li-ion cells shipped in storage state need that initial slow charge to register correctly with the handset's fuel gauge circuit.\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\"\u003eThis is normal for the first three to five cycles. The handset's fuel gauge calibrates itself against actual charge and discharge data, and a new cell needs several full cycles before that calibration is accurate. Until then, the gauge may cut off the handset early even if residual charge remains in the cell. Run three complete charge-to-cutoff cycles in normal use and the reported capacity will stabilise at the rated 830mAh.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge light after fitting the new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA battery shipped in storage state can sit below the acceptance threshold the base station uses to begin its charge cycle — typically around 3.0V for a single Li-ion cell. The base sees a voltage it does not recognise as a flat-but-healthy cell and withholds current. Seat the handset firmly in the base, then leave it undisturbed for 30 minutes. If the charge light still does not appear, remove the handset, wait 10 seconds, and reseat it — this resets the base's detection circuit and usually clears the issue.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340094603354,"sku":"BWCS-SX780CL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340094636122,"sku":"BWCS-SX780CL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340094668890,"sku":"BWCS-SX780CL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SX780CL-1.webp?v=1778367188","url":"https:\/\/batteryweb.com\/products\/siemens-gigaset-sl78h-replacement-battery-37v-830mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}