{"product_id":"sony-ericsson-xperia-z-replacement-battery-37v-2300mah-li-polymer","title":"Sony Ericsson Xperia Z LIS1502ERPC Replacement Battery 3.7V 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony Ericsson Xperia Z \/ C6603 — 3.7V Li-Polymer Replacement Battery (LIS1502ERPC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2300mAh Li-Polymer battery for the Sony Ericsson Xperia Z smartphone. It fits the Xperia Z, C6603, Yuga, and L36i, among other variants in the same family. Capacity matches the original LIS1502ERPC specification at 8.51Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXperia Z family fit:\u003c\/strong\u003e\n    The C6603, L36i, and Yuga all share the same battery bay geometry, connector pinout, and BMS handshake protocol as the standard Xperia Z. One cell covers the entire platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge and discharge cycles on the Xperia Z. The BMS accepted the charge IC handshake without fault codes, and the protection circuit tripped correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration tip:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging is introduced.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Xperia Z reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Xperia Z uses a fuel gauge IC that builds a discharge model from the previous cell's history. When you fit a new cell, the IC still references that old curve, so the percentage on screen drifts from actual charge state. This is not a fault with the replacement battery — it is a calibration lag in the fuel gauge. Run one full discharge to near 0% and a full charge to 100% without interruption. After that cycle, the IC recalculates its curve against the new cell and percentage reporting stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff symptom, not a capacity fault. Under heavy load — active LTE modem, bright screen, GPS — the new cell's internal resistance causes a brief voltage drop below the shutdown threshold before the fuel gauge catches it. The phone cuts power to protect the SoC even though the displayed percentage looks safe. Let the phone cool for two minutes, then power it back on. After one full recalibration cycle the fuel gauge learns the cell's sag profile and adjusts the low-voltage warning trigger to account for it — targeting a resting voltage of around 3.5V before shutdown.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404331712602,"sku":"BWCS-ERL360SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404331745370,"sku":"BWCS-ERL360SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404331778138,"sku":"BWCS-ERL360SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ERL360SL-1.webp?v=1779369761","url":"https:\/\/batteryweb.com\/products\/sony-ericsson-xperia-z-replacement-battery-37v-2300mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}