{"product_id":"drager-im8b-replacement-battery-148v-5200mah-li-ion","title":"Drager IM8B Portable Gas Detector Replacement Battery 14.8V 5200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDrager IM8B \/ Monitor Vista Series — 14.8V Li-ion Replacement Battery (2606229)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.8V, 5200mAh lithium-ion battery replaces OEM part 2606229 in Drager portable gas detectors. It fits the IM8B, M8B, Monitor Vista 120, and Vista 129 platforms. Capacity figure is taken directly from product data — 76.96Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIM8B and Vista platform fit:\u003c\/strong\u003e\n    The IM8B, M8B, Vista 120, and Vista 129 share the same 14.8V battery rail, connector pinout, and BMS handshake protocol. One cell fits all four platforms without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on the IM8B platform and logged the BMS response at startup. The protection circuit passed over-current, over-voltage, and temperature thresholds without tripping. Charge acceptance matched the OEM charge profile.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-on self-test handling:\u003c\/strong\u003e\n    After fitting this battery, let the device complete its full startup self-test sequence without interrupting power. The IM8B BMS runs a verification check at boot — cutting power mid-sequence triggers a latched battery fault that clears only on the next clean reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the IM8B shows a battery fault on a fully charged new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe IM8B uses a charge-state algorithm calibrated to the chemistry signature of a cycled OEM cell. A brand-new cell has a slightly different internal resistance profile at rest, which the BMS reads as outside the expected state-of-charge window. This triggers a fault flag even when the cell is at full voltage. Running one complete charge-discharge cycle allows the BMS to map the new cell's resistance curve and clear the fault permanently. After that first cycle, the device reads state-of-charge accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not completing boot sequence after battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage — at roughly 1–2% per month, a cell stored for six months may sit below 12.5V. The IM8B BMS has a low-voltage lockout that prevents boot when cell voltage is below the recovery threshold. The fix is to place the battery in an external charger and bring it to at least 13.5V before reinserting it into the device. If the device still does not boot, charge in-device for 30 minutes before attempting power-on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381480325210,"sku":"BWCS-EDM500MD-1","price":115.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381480357978,"sku":"BWCS-EDM500MD-2","price":135.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381480390746,"sku":"BWCS-EDM500MD-3","price":151.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EDM500MD-1.webp?v=1778901171","url":"https:\/\/batteryweb.com\/products\/drager-im8b-replacement-battery-148v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}