{"product_id":"sony-xperia-10-iii-5g-replacement-battery-385v-4400mah-li-polymer","title":"Sony Xperia 10 III 5G SNYSAC5 Replacement Battery 3.85V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony Xperia 10 III 5G — 3.85V Li-Polymer Replacement Battery (SNYSAC5)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 4400mAh Li-Polymer cell replaces the SNYSAC5 battery in the Sony Xperia 10 III 5G and its regional variants — A102SO, PDX-213, and SOG04. It matches the original cell's dimensions (74.30 x 60.00 x 5.36mm), voltage rail, and connector footprint. Capacity is rated at 16.94Wh, matching the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXperia 10 III variant coverage:\u003c\/strong\u003e\n    The A102SO, PDX-213, and SOG04 are regional SKUs for the same hardware platform — same PCB layout, same battery bay, same BMS handshake protocol. One cell fits all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Xperia 10 III platform. The BMS accepted the cell on first connection, protection thresholds triggered correctly at the low-voltage cutoff, and the charge IC communicated without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge hold-off:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\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\"\u003eThe Xperia 10 III's fuel gauge IC stores a learned discharge curve from the old cell. After a cell swap, that stored curve no longer matches the new cell's actual voltage-versus-capacity profile. When the modem fires during a 5G handoff or the display peaks in brightness, the new cell's voltage drops below the BMS cutoff threshold — even though the OS gauge still reads 20–30%. Run one full discharge to below 5% and a full charge to 100% without interruption. After that cycle, the coulomb counter resets its reference and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn some units, the charge IC will not negotiate USB-PD fast charging on the first cycle with a new cell — it defaults to standard 5V charging as a safety measure while the BMS builds a charge history. This is normal behaviour, not a fault with the cell or the charger. Plug in using the original Sony charger and cable, let the first full charge complete at standard rate, then unplug and replug. USB-PD negotiation typically activates from the second cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391882788954,"sku":"BWCS-ERX213SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391882821722,"sku":"BWCS-ERX213SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391882854490,"sku":"BWCS-ERX213SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ERX213SL-1.webp?v=1779142479","url":"https:\/\/batteryweb.com\/products\/sony-xperia-10-iii-5g-replacement-battery-385v-4400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}