{"product_id":"thunderobot-911m-m1a-replacement-battery-144v-5100mah-li-ion","title":"Thunderobot SQU-1406 911M-M1A Compatible Battery 14.4V 5100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eThunderobot 911M-M1A Series — 14.4V Li-ion Replacement Battery (SQU-1406)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V Li-ion replacement battery rated at 5100mAh (73.44Wh) for the Thunderobot 911M-M1A and related 911 series gaming laptops. It uses OEM part number SQU-1406 and fits multiple variants including the 911M-M5, 911M-M3, and 911-S2e. Install it when the original cell no longer holds usable charge under gaming loads.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e911 series cell compatibility:\u003c\/strong\u003e\n    The 911M-M1A, M3, M5, and S2e variants all share the same 14.4V battery rail, connector pinout, and BMS handshake protocol — that is why a single SQU-1406 cell covers the full range without any adapter or firmware workaround.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a 911 series unit, confirmed BMS communication at all charge states, and verified the protection circuit triggers correctly at low-voltage cutoff without false trips during high-CPU draw spikes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration cycle:\u003c\/strong\u003e\n    After fitting this cell, run the laptop on battery until it drops to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the system flags after any 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 the 911M-M1A shuts down at 20–30% during heavy gaming sessions\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eUnder simultaneous CPU and GPU load, the 911 series draws peak current that exposes a voltage cliff in aged or uncalibrated cells. The battery voltage collapses faster than the fuel gauge IC can track, so the displayed percentage is still 20–30% when the cell actually hits the BMS low-voltage cutoff. This is not a hardware fault with the replacement cell — it is a calibration gap between the new cell's discharge curve and the stored EEPROM data from the previous cell. Running one full discharge-to-hibernate cycle resolves this in most cases.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery as \"Unknown\" or 0% immediately after fitting the SQU-1406\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads battery identity and health data from the cell's EEPROM, not from live voltage alone. When a new cell is installed, the EEPROM data does not match the charge history the system was tracking, so the BIOS flags it as unknown or reports 0%. This is expected behaviour on Thunderobot 911 series firmware. Boot into the OS, plug in AC power, and allow a full charge cycle to complete — the BIOS will re-register the cell and display correct health data. If the warning persists after one full charge, run the hibernate-cutoff discharge cycle described above to force a complete learn cycle reset.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409662148698,"sku":"BWCS-THD911NB-1","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409662181466,"sku":"BWCS-THD911NB-2","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409662214234,"sku":"BWCS-THD911NB-3","price":122.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-THD911NB-1.webp?v=1779580358","url":"https:\/\/batteryweb.com\/products\/thunderobot-911m-m1a-replacement-battery-144v-5100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}