{"product_id":"siemens-gigaset-sl3501-replacement-battery-37v-1300mah-li-ion","title":"Siemens Gigaset SL3501 Compatible Battery 3.7V 1300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSiemens Gigaset SL3501 — 3.7V Li-ion Replacement Battery (V30145-K1310-X127)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1300mAh Li-ion battery replaces the original pack in the Siemens Gigaset SL3501 cordless handset and compatible Gigaset models. It fits the SL30, Gigaset 4000 micro, and Gigaset 4000s micro among others. Voltage and capacity match OEM specs exactly — the handset charges and reports battery level normally through the base station.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGigaset SL-series handset fit:\u003c\/strong\u003e\n    These Gigaset models share the same 3.7V Li-ion cell format, connector orientation, and BMS handshake protocol. Swapping between compatible part numbers — including L36880-N5401-A102, V30145-K1310-X132, and V30145-K1310-X133 — does not require handset reprogramming.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge cycles on a Gigaset base station and confirmed the BMS communicates charge status correctly. The handset's battery indicator tracked accurately across full charge and discharge 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. Leave it seated for a full 16-hour charge before use — Li-ion cells shipped in storage-state need a complete slow charge to calibrate the handset's fuel gauge accurately.\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 rated after fitting a new Li-ion pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell arrives partially discharged. If you use the handset before completing the first full charge cycle, the fuel gauge calibrates against a low starting point. This makes the handset underestimate remaining capacity and cut off calls earlier than it should. Run two or three full charge-to-discharge cycles and the reported talk time will align with the rated 1300mAh capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset losing DECT pairing after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the old battery cuts all power to the handset's memory. Some Gigaset DECT handsets store pairing data in volatile RAM, so the link to the base station drops when the battery is pulled. If the handset shows \"No Base\" or fails to register after the swap, press and hold the handset's Menu and OK buttons simultaneously to enter registration mode. Re-pair to the base station following the Gigaset pairing sequence — this takes under two minutes and restores full DECT functionality.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339897503834,"sku":"BWCS-SSL300CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339897536602,"sku":"BWCS-SSL300CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339897569370,"sku":"BWCS-SSL300CL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SSL300CL-1.webp?v=1778366944","url":"https:\/\/batteryweb.com\/products\/siemens-gigaset-sl3501-replacement-battery-37v-1300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}