{"product_id":"idp-vagueru-replacement-battery-12v-3800mah-ni-mh","title":"IDP Vagueru DR36 12V Ni-MH Compatible Battery 3800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIDP Vagueru — 12V Ni-MH Replacement Battery (DR36)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 3800mAh Ni-MH replacement battery for the IDP Vagueru laptop. It slots in where the original DR36 or DR36S unit has failed or degraded. Dimensions are 139.50 x 89.00 x 20.00mm, matching the original battery bay exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDR36 and DR36S compatibility:\u003c\/strong\u003e\n    Both OEM part numbers reference the same 12V Ni-MH cell configuration used across the Vagueru platform. The connector pinout and BMS communication protocol are identical, so either original part number is a direct electrical match for this replacement.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Vagueru platform and confirmed the BMS handshake completes without error codes. The protection circuit tripped correctly at the expected low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH conditioning on first install:\u003c\/strong\u003e\n    After fitting, 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 Vagueru.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after swapping the DR36\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Vagueru BIOS reads health data from EEPROM stored on the battery PCB. When a new cell goes in, that EEPROM data does not match the accumulated charge history the BIOS expects, so it flags the battery as degraded even though the cell is new. Running one full discharge-to-hibernate followed by a full uninterrupted charge forces the BIOS to rewrite its learn-cycle data against the new cell. After two to three calibration cycles, the health status normalises and the warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVagueru 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 actual voltage curve. The IC still uses data from the old, degraded cell, so it misjudges the remaining charge and the laptop hits the voltage cliff earlier than the display suggests. The fix is deliberate calibration: drain the battery fully to hibernate cutoff, then charge to 100% without interruption — repeat this two to three times. After those cycles the fuel gauge IC maps the new cell's curve correctly and shutdowns at low percentage stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410857263194,"sku":"BWCS-DR36HB-1","price":89.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410857295962,"sku":"BWCS-DR36HB-2","price":105.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410857328730,"sku":"BWCS-DR36HB-3","price":118.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DR36HB-big.webp?v=1779581376","url":"https:\/\/batteryweb.com\/products\/idp-vagueru-replacement-battery-12v-3800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}