{"product_id":"asus-transformer-pad-tf501t-replacement-battery-37v-4050mah-li-polymer","title":"Asus Transformer Pad TF501T C11P1308 Compatible Battery 3.7V 4050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus Transformer Pad TF501T \/ TF502T — 3.7V Li-Polymer Replacement Battery (C11P1308)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 4050mAh Li-Polymer replacement battery for the Asus Transformer Pad TF501T and TF502T tablets. It matches OEM part numbers C11P1308 and 0B200-00620100. Capacity is rated at 14.99Wh, in line with the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTF501T and TF502T compatibility:\u003c\/strong\u003e\n    Both tablets share the same battery bay dimensions, connector pinout, and charge IC handshake protocol. The 140.10 × 68.68 × 3.30mm cell fits the chassis without modification, and the BMS communicates with the same fuel gauge IC used across the TF50x 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 a TF501T unit. The BMS accepted the charge controller handshake without fault codes, held voltage above 3.5V under combined display and Wi-Fi load, and cut off cleanly at the low-voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after installation:\u003c\/strong\u003e\n    After fitting this cell, run the tablet down to automatic shutoff — do not force-power-off — then charge uninterrupted to 100%. This one full cycle resets the fuel gauge IC calibration against the new cell and clears the inaccurate percentage readings that typically appear on first boot after a 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 TF501T shuts down at 15–25% remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TF501T runs the display backlight and Wi-Fi radio simultaneously under normal use, which creates a combined load spike the fuel gauge IC did not see during calibration on a degraded original cell. When the new cell hits around 3.5V under that load, the BMS interprets the voltage sag as a low-cell condition and triggers a protective shutdown before the percentage counter reaches zero. This is not a fault — it is the BMS doing its job. One full discharge-to-shutoff and uninterrupted recharge cycle recalibrates the fuel gauge against the actual discharge curve of the new cell and resolves the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable on the TF501T after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TF501T charge IC re-negotiates its charging profile on the first accepted cycle after a battery swap. Until that cycle completes, the tablet may default to slow-charge mode regardless of which adapter is connected. Connect the original Asus adapter — or a USB-PD adapter rated to at least 18W — and allow one full charge from low to 100% without interruption. After that cycle, the charge IC locks onto the correct profile and fast charging resumes at the expected rate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425847083098,"sku":"BWCS-AUF501SL-1","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425847115866,"sku":"BWCS-AUF501SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425847148634,"sku":"BWCS-AUF501SL-3","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUF501SL-1.webp?v=1779929950","url":"https:\/\/batteryweb.com\/products\/asus-transformer-pad-tf501t-replacement-battery-37v-4050mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}