{"product_id":"microrae-pgm-6208-replacement-battery-37v-5400mah-li-ion","title":"MicroRAE PGM-6208 Replacement Battery 3.7V 5400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMicroRAE PGM-6208 \/ PGM-6228 — 3.7V Li-ion Replacement Battery (M01-3055-000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 5400mAh Li-ion battery replaces the OEM pack in the MicroRAE PGM-6208 and PGM-6228 portable multi-gas detectors. It uses the same M01-3055-000 form factor and connector, so it seats directly in the battery compartment without modification. Capacity figure is 5400mAh — same as the original MicroRAE specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePGM-6208 and PGM-6228 compatibility:\u003c\/strong\u003e\n    Both models run the same 3.7V battery rail, share the same physical housing dimensions, and use the same BMS handshake protocol — that is why one pack covers both. Swapping between them requires no firmware change or battery menu reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the pack through a full sensor-initialisation sequence on a PGM-6208 test unit. The BMS held stable through the current spike at multi-sensor power-up and maintained clean voltage delivery across sustained continuous monitoring loads without tripping cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePre-deployment calibration cycle:\u003c\/strong\u003e\n    After fitting this battery, run a full calibration cycle through the instrument menu before taking the unit into the field. The PGM-6208 maps battery state during calibration — skipping this step causes the instrument to throw premature low-battery warnings during the first monitoring session, even when charge is near full.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff at sensor initialisation on the PGM-6208\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the PGM-6208 powers on, it initialises all active sensor modules simultaneously. That brief draw spike — typically lasting under two seconds — can trip the BMS on a depleted or cold pack before the sensors reach operating state. This is not a fault with the instrument. It is a protection threshold response in the battery itself. Charge the pack fully to 4.2V before the first power-on in cold environments, and allow the unit to warm to above 5°C before startup if it has been stored outdoors.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePack will not charge after the unit sat unused for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA MicroRAE pack stored below approximately 2.5V enters a deep-discharge state where the BMS disables the charge circuit as a cell-protection measure. The charger sees no response and stops — it looks like a dead battery, but the cells may still be recoverable. Place the pack on the OEM charger and leave it connected for a minimum of four hours without interrupting the charge cycle; some BMS units require a trickle pre-charge phase before the main charge current engages. If the charge indicator does not show any activity after four hours, measure cell voltage directly — a reading below 2.0V indicates the cells will not recover.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360450707546,"sku":"BWCS-PGM620XL-1","price":273.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360450740314,"sku":"BWCS-PGM620XL-2","price":327.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360450773082,"sku":"BWCS-PGM620XL-3","price":367.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PGM620XL-1.webp?v=1778614760","url":"https:\/\/batteryweb.com\/products\/microrae-pgm-6208-replacement-battery-37v-5400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}