{"product_id":"drager-msi-p5-replacement-battery-48v-2000mah-ni-mh","title":"Drager MSI P5 Multi-Gas Detector Replacement Battery 4.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDrager MSI P5 \/ MSI P7 \/ EM200 — 4.8V Ni-MH Replacement Battery (6033604-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 2000mAh Ni-MH rechargeable battery for the Drager MSI P5, MSI P7, and EM200 portable multi-gas detectors. It replaces OEM part number 6033604-01 and fits the same battery bay used across all three units. Capacity figure is taken from product data — 9.6Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMSI P5, MSI P7, and EM200 compatibility:\u003c\/strong\u003e\n    All three instruments share the same 4.8V two-cell Ni-MH pack format, connector pinout, and BMS handshake protocol. One replacement covers the full platform without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through a simulated sensor-initialisation sequence, which hits the BMS with a sharp current spike at power-up. The pack cleared the threshold without triggering a cutoff, and voltage recovered within 200ms of the startup surge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration cycle:\u003c\/strong\u003e\n    After fitting this pack, run a full calibration cycle through the MSI instrument menu before taking it into the field. The gas detector maps battery state during calibration — skip this step and the unit will throw premature low-battery warnings on the first monitoring session.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMSI P5 BMS lockout after the pack sat unused in a carry case\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–2% per day at room temperature. A pack stored for two to three months can drop below the BMS recovery threshold — typically around 3.6V for a 4.8V four-cell pack — and the protection circuit locks out charging entirely. The charger shows no activity, and the instrument will not power on. Placing the pack in a compatible Ni-MH charger that supports a low-voltage recovery or \"wake\" mode for at least 15 minutes at a trickle rate will usually bring the cells back above the recovery floor. Once voltage climbs past the BMS threshold, the full charge cycle resumes normally.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGas readings resetting or logging gaps mid-session on a \"charged\" pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-dropout event, not a calibration fault. Under sustained multi-sensor load, aged or cold Ni-MH cells sag below the instrument's minimum operating voltage for a fraction of a second — long enough to reset the onboard logging module. The MSI instruments do not always flag this as a battery error; the data log simply shows a gap or a readings reset. Check cell internal resistance if a conductance tester is available — any cell reading above 80mΩ on a nominally healthy 4.8V Ni-MH pack is causing the sag. Replace the pack and verify terminal voltage holds above 4.4V under load before the next deployment.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360469483610,"sku":"BWCS-DMP500SL-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360469516378,"sku":"BWCS-DMP500SL-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360469549146,"sku":"BWCS-DMP500SL-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DMP500SL-1.webp?v=1778615882","url":"https:\/\/batteryweb.com\/products\/drager-msi-p5-replacement-battery-48v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}