{"product_id":"asus-c204ma-gj0003-replacement-battery-1155v-3500mah-li-polymer","title":"Asus C204MA Chromebook Compatible Battery 11.55V 3500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus Chromebook C204MA \/ Flip C214MA — 11.55V Li-Polymer Replacement Battery (C31N1836)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.55V, 3500mAh (40.43Wh) Li-Polymer cell replaces the original battery in the Asus Chromebook C204MA and Flip C214MA series. It fits the C204MA-GJ0003, C204MA-BU1430, C204MA-YS02-GR, and the ruggedised Flip C214MA among others. OEM part numbers C31N1836, C31N1836-1, 0B200-03370000, and 0B200-03370100 all match this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC204MA and C214MA platform fitment:\u003c\/strong\u003e\n    Both the standard C204MA and the Flip C214MA share the same 11.55V three-cell architecture, connector pinout, and BMS handshake protocol — which is why one cell covers the full lineup. The voltage rail feeds the MediaTek SoC directly, so a mismatch here causes immediate POST failure, not just reduced capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a C204MA chassis and confirmed the BMS accepted the new EEPROM data without throwing a health fault on first boot. Charge termination landed at the correct 12.6V ceiling. Discharge cutoff triggered cleanly at the expected low-voltage threshold before the system could force a hard shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap calibration on ChromeOS:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100% without unplugging mid-cycle. This forces the fuel gauge IC to re-map against the new cell's actual capacity curve and clears the inaccurate health warning ChromeOS flags after every cell swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy ChromeOS flags \"battery health poor\" immediately after replacing the C204MA cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe C204MA's embedded controller reads health data from the battery's EEPROM — not from live voltage measurements. When a new cell arrives, that EEPROM may carry factory default values that don't match the embedded controller's expected charge history, triggering an instant poor-health flag. This is a data mismatch, not a faulty battery. Running a full discharge-to-hibernate followed by a clean charge to 100% lets the embedded controller overwrite the stale EEPROM reference with a fresh baseline. After one to two full cycles the health indicator should clear and read accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eChromebook C204MA shutting down suddenly at 20–30% shown on the gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops below the BMS cutoff threshold while the OS fuel gauge still reads 20–30% — a calibration gap, not a hardware fault. Under full load — display at max brightness, active tabs, and the MediaTek SoC at peak clock — voltage sags faster than the uncalibrated gauge anticipates. The cell hits the hard cutoff at roughly 9.9V and the system drops instantly. Fix this by completing two full discharge-to-hibernate and uninterrupted charge cycles so the fuel gauge IC can re-anchor its low-voltage estimate to the new cell's actual discharge curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409616011354,"sku":"BWCS-AUC214NB-1","price":74.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409616044122,"sku":"BWCS-AUC214NB-2","price":88.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409616076890,"sku":"BWCS-AUC214NB-3","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUC214NB-1.webp?v=1779580214","url":"https:\/\/batteryweb.com\/products\/asus-c204ma-gj0003-replacement-battery-1155v-3500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}