{"product_id":"coolview-1400xt-surgical-headlight-replacement-battery-72v-6600mah-li-ion","title":"Coolview 1400XT Surgical Headlight 7.2V Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCoolview 1400XT \/ 2100XT Surgical Headlight — 7.2V Li-ion Replacement Battery (RRC2057)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.2V 6600mAh Li-ion battery replaces the pack in Coolview 1400XT and 2100XT Surgical Headlights. It matches the original cell voltage, capacity, and connector configuration. Replaces OEM part numbers RRC2057, PT9-BAT, SE2057-1, and the full ND2057 variant range.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1400XT and 2100XT platform fit:\u003c\/strong\u003e\n    Both headlight models share the same 7.2V battery bay, BMS communication protocol, and physical latch. One pack covers both units — no connector adaptation or firmware difference between them.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through a full charge-discharge cycle on a Coolview headlight body. The BMS accepted the charge handshake on first contact, held output voltage steady under sustained LED draw, and triggered the low-cell protection cutoff at the correct threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation headlight calibration:\u003c\/strong\u003e\n    After swapping this pack in, cycle the headlight through a full brightness sweep before use in a procedure. The intensity control circuit reads battery state during that sweep, and skipping it can cause a false low-battery indicator to appear during the first use session.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 1400XT drops to minimum brightness mid-procedure without warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 1400XT's BMS monitors each cell individually, not just total pack voltage. When one cell in an aged pack sags below the per-cell floor — even briefly — the BMS steps the LED driver back to its lowest current draw to prevent an uncontrolled shutdown. This looks like a sudden dimming event rather than a flat battery warning. A new pack with balanced cells eliminates this behaviour. If it recurs early in a replacement pack's life, check that the battery contacts in the bay are clean and making full contact.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHeadlight powers on but shuts off the moment maximum brightness is selected\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eMaximum brightness pulls the highest current from the pack. If the battery has been sitting discharged for an extended period, the BMS may enter a low-voltage lockout state that allows a brief startup but cuts off under load. The fix is a slow pre-charge: connect the charger and leave it for 20–30 minutes before attempting to power on the headlight. Most Coolview chargers detect the low-state pack and apply a trickle current first. Once pack voltage recovers to approximately 7.0V, normal charging and full-brightness operation resume.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360436650074,"sku":"BWCS-PRC057SL-1","price":176.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360436682842,"sku":"BWCS-PRC057SL-2","price":210.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360436715610,"sku":"BWCS-PRC057SL-3","price":236.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PRC057SL-1.webp?v=1778614760","url":"https:\/\/batteryweb.com\/products\/coolview-1400xt-surgical-headlight-replacement-battery-72v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}