{"product_id":"favi-mini-projector-replacement-battery-37v-1050mah-li-ion","title":"FAVI Mini Projector NK01-S005 Compatible Battery 3.7V 1050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFAVI Mini Projector PJM-1000 — 3.7V Li-ion Replacement Battery (NK01-S005)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1050mAh Li-ion replacement battery for the FAVI Mini Projector and PJM-1000. It matches the OEM part number NK01-S005 and fits the original battery bay without modification. Capacity is rated at 3.89Wh, identical to the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMini Projector and PJM-1000 compatibility:\u003c\/strong\u003e\n    Both models run the same single-cell 3.7V architecture with the NK01-S005 form factor. The connector pinout and BMS voltage thresholds are identical across this projector line, so one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the projector's internal charge circuit and confirmed the BMS accepted charge correctly, balanced cutoff voltage sat at the expected threshold, and the projector's battery indicator tracked accurately across the discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness and current draw:\u003c\/strong\u003e\n    Run the projector in eco or low-brightness mode on battery power. Full lamp brightness draws 30–40% more current from this 1050mAh cell than eco mode does, with no visible improvement in most presentation environments. Eco mode keeps the cell above the lamp's minimum voltage threshold longer.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the FAVI Mini Projector shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe lamp inside the PJM-1000 requires a higher minimum supply voltage than the projector's general electronics. As the cell discharges, voltage drops below the lamp's operating floor before the battery gauge hits zero — the projector cuts the lamp to protect it. This is not a battery fault. It is the projector prioritising lamp safety over the displayed charge level. Switching to eco brightness mode reduces current draw and keeps cell voltage above the lamp threshold for a longer portion of the discharge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery not charging when connected through the projector's internal charger\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe FAVI Mini Projector's internal charge circuit expects a Li-ion cell with a 3.7V nominal voltage and a 4.2V charge ceiling — both matched by the NK01-S005 spec. If the charger does not initiate, the most common cause is a deeply discharged cell that has fallen below the BMS recovery threshold, typically under 2.5V. Connect the projector to power and leave it for 20–30 minutes without turning it on — the circuit will attempt a trickle pre-charge before switching to full current. If the charge indicator still does not respond after that period, measure cell voltage directly; anything below 2.0V indicates a cell that will not recover.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088641626,"sku":"BWCS-MRP110PT-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088674394,"sku":"BWCS-MRP110PT-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088707162,"sku":"BWCS-MRP110PT-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MRP110PT-1.webp?v=1779760241","url":"https:\/\/batteryweb.com\/products\/favi-mini-projector-replacement-battery-37v-1050mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}