{"product_id":"samsung-xe303c12-replacement-battery-75v-4080mah-li-polymer","title":"Samsung XE303C12 Chromebook Replacement Battery 7.5V AA-PBZN2TP","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Chromebook XE303C12 — 7.5V Li-Polymer Replacement Battery (AA-PBZN2TP)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.5V, 4080mAh (30.6Wh) lithium-polymer replacement battery for the Samsung Chromebook XE303C12 and Chromebook Series 3. It also fits the ATIV Smart PC 500T line. OEM part numbers AA-PBZN2TP and BA43-00355A both map to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXE303C12 and Series 3 platform fit:\u003c\/strong\u003e\n    These models share the same 7.5V power rail, flat Li-Polymer form factor, and connector pinout. The BMS on each expects the same charge termination voltage, so the same cell works across the full family without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in an XE303C12 chassis and confirmed BMS handshake, correct charge termination at 8.7V, and stable discharge through a full CPU and display load cycle. No false cutoff events triggered.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the XE303C12:\u003c\/strong\u003e\n    After fitting this battery, run the Chromebook down until it hibernates, then charge uninterrupted to 100%. This resets the EC battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the XE303C12 shuts down at 20–30% after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Chromebook's embedded controller tracks cell voltage curves from the previous battery. After a swap, it still uses those old voltage thresholds to estimate state of charge. When the new cell hits a voltage point the EC associates with near-empty, it triggers shutdown — even if actual capacity remains. This is not a fault with the replacement cell. One full discharge-to-hibernate followed by a full uninterrupted charge teaches the EC the new cell's curve and eliminates premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eChromeOS fuel gauge reading 0% or \"unknown\" immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the XE303C12 reads EEPROM data written by the original cell to calculate charge state. A new cell arrives with different EEPROM baseline values, so the gauge reports 0% or unknown until it collects real discharge data. This is a calibration gap, not a dead battery. Plug in, let it charge fully, then discharge to hibernate once — the fuel gauge IC recalibrates against the new cell's actual chemistry and the readout stabilises within two cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409788731482,"sku":"BWCS-SNE303NB-1","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409788764250,"sku":"BWCS-SNE303NB-2","price":71.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409788797018,"sku":"BWCS-SNE303NB-3","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SNE303NB-1.webp?v=1779580888","url":"https:\/\/batteryweb.com\/products\/samsung-xe303c12-replacement-battery-75v-4080mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}