{"product_id":"bullard-pa30-papr-replacement-battery-6v-3500mah-ni-mh","title":"Bullard PA30 PAPR Replacement Battery 6V 3500mAh PA3BP","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBullard PA30 PAPR — 6V Ni-MH Replacement Battery (PA3BP)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V, 3500mAh Ni-MH replacement battery for the Bullard PA30 Powered Air-Purifying Respirator. It fits the PA30 PAPR and Tri-Filter configurations. The PA3BP slot accepts this cell directly — same footprint, same connector, same BMS handshake.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePA30 PAPR and Tri-Filter compatibility:\u003c\/strong\u003e\n    Both configurations draw from the same 6V rail and use the same PA3BP battery housing. The blower motor, thermal imaging circuit, and display all share this single supply — there is no separate battery compartment for either function.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through combined blower and thermal detector load cycles. The BMS held stable across motor-start surge and continuous detector draw without tripping into protection mode.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH discharge care for PAPR use:\u003c\/strong\u003e\n    Do not leave the PA30 sitting idle on a partially discharged pack. Ni-MH cells in standby develop voltage depression faster than under active cycling — run the pack to near-full depletion periodically to keep cell balance consistent across the pack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePA30 thermal detector losing accuracy before the battery indicator drops\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe PA30's thermal detector is voltage-sensitive — it draws a calibrated heating current to hold the sensor at a stable reference temperature. As cell voltage sags under combined blower and detector load, that heating current becomes inconsistent before the battery gauge registers low. The result is thermal drift: temperature readings shift by several degrees without any low-battery warning. If readings feel off during a sweep, check the actual pack voltage at the charge port — anything below 5.4V under load will affect detector accuracy even if the indicator still shows charge remaining.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePA30 blower cutting out during heavy exertion while thermal image stays on\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe blower motor draws a hard spike on startup and again when airflow demand increases — deep breathing cycles cause repeated motor surges on the same 6V rail. The BMS will trip into protection mode if that surge coincides with a low state of charge, cutting motor power while the display circuit stays live on residual voltage. This is a BMS overcurrent response, not a motor fault. Recharge the pack fully — to 7.2V open-circuit on a Ni-MH 6V pack — before returning the unit to service.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426120466522,"sku":"BWCS-BZT300SL-1","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426120499290,"sku":"BWCS-BZT300SL-2","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426120532058,"sku":"BWCS-BZT300SL-3","price":95.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BZT300SL-1.webp?v=1779930364","url":"https:\/\/batteryweb.com\/products\/bullard-pa30-papr-replacement-battery-6v-3500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}