{"product_id":"ntk-submarine-replacement-battery-108v-6600mah-li-ion","title":"NTK Submarine Laptop Compatible Battery 10.8V 6600mAh DR202","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNTK Submarine — 10.8V Li-ion Replacement Battery (DR202 \/ ME202BB)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 6600mAh (71.28Wh) lithium-ion battery for the NTK Submarine notebook computer. It replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02. Physical dimensions are 148 x 89 x 20mm — verify against your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNTK Submarine platform fit:\u003c\/strong\u003e\n    All five OEM part numbers cross-reference the same 10.8V three-cell lithium-ion rail used in the Submarine chassis. The connector pinout, BMS handshake protocol, and charge termination voltage are identical across the DR202, EMC36, ME202BB, NL2020, and SMP02 variants — they share one underlying cell configuration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, discharge, and BMS communication checks. The protection circuit engaged correctly at low-voltage cutoff and the charge IC accepted the cell without triggering fault codes on the first cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the Submarine:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on the Submarine 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 NTK Submarine BIOS reports poor battery health after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Submarine's BIOS reads health data from the battery's EEPROM — a small memory register on the protection board that stores cycle count and rated capacity from the original manufacturer. A new replacement cell carries different EEPROM values than the outgoing cell, so the BIOS flags a health mismatch immediately after installation. This is not a fault with the replacement cell. Running one complete discharge-to-hibernate followed by an uninterrupted full charge forces the BIOS to run a battery learn cycle and rewrite its health baseline against the new cell's actual data.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNTK Submarine shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The gauge reads state-of-charge from a lookup table built on the old cell's chemistry profile, so it misjudges remaining capacity by a wide margin. Under full CPU plus display load, the cell hits its actual low-voltage floor before the OS gauge catches up — the BMS trips and the laptop cuts power. Run two to three complete discharge-to-hibernate and full-recharge cycles without interruption. After the third cycle the fuel gauge IC recalibrates and shutdown-at-30% stops occurring; the BMS cutoff voltage for this cell sits at approximately 9.0V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410835931226,"sku":"BWCS-SP500HB-1","price":88.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410835963994,"sku":"BWCS-SP500HB-2","price":103.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410835996762,"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\/ntk-submarine-replacement-battery-108v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}