{"product_id":"twinhead-n2700-replacement-battery-108v-6600mah-li-ion","title":"Twinhead N2700 Replacement Battery DR202 10.8V 6600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTwinhead N2700 — 10.8V Li-ion Replacement Battery (DR202)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 6600mAh Li-ion replacement battery for the Twinhead N2700 notebook. It replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02. If your original cell has aged out or refuses to hold charge, this cell restores full cordless operation on the N2700 platform.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eN2700 platform compatibility:\u003c\/strong\u003e\n    The N2700 uses a 10.8V three-cell-series Li-ion architecture with a fixed connector pinout. This cell matches that voltage rail and connector layout exactly, so the BMS handshake completes on first boot without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge, full-load discharge, and BMS communication checks. The protection circuit triggered correctly at low-cell cutoff, and charge termination fired at the expected 12.6V ceiling.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the N2700:\u003c\/strong\u003e\n    After installing, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the N2700 BIOS throws 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\"\u003eBIOS reporting battery health as poor immediately after installing the new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe N2700 BIOS reads health status from EEPROM data written by the original cell's fuel gauge IC. A new cell arrives with factory EEPROM values that don't match the laptop's learned discharge profile. The BIOS sees that mismatch and flags the battery as degraded — even though the cell is new. Running two full discharge-to-hibernate and charge-to-100% cycles rewrites the fuel gauge baseline and clears the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eN2700 shutting down abruptly at 20–30% shown on the OS gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a fuel gauge error. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can recalibrate against the new cell's discharge curve. The BMS trips on under-voltage before the OS gauge reaches zero. After one full calibration cycle — discharge to hibernate, charge uninterrupted to 100% — the fuel gauge IC maps the actual voltage curve of the new cell, and the OS percentage tracks correctly down to the BMS cutoff near 9.0V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410838257754,"sku":"BWCS-SP500HB-1","price":88.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410838290522,"sku":"BWCS-SP500HB-2","price":103.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410838323290,"sku":"BWCS-SP500HB-3","price":114.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SP500HB-1.webp?v=1779581321","url":"https:\/\/batteryweb.com\/products\/twinhead-n2700-replacement-battery-108v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}