{"product_id":"braun-replacement-battery-37v-800mah-li-ion","title":"Braun 14500CY Flashlight Compatible Battery 3.7V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBraun 14500CY — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 800mAh Li-ion cell in the 14500 format, replacing OEM part 14500CY in Braun handheld flashlights. The 14500 is a lithium cell the same physical size as an AA, so confirm your flashlight is rated for 3.7V before installing — it will not safely substitute for a 1.5V alkaline AA. Capacity matches the original at 800mAh (2.96Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e14500 format flashlight compatibility:\u003c\/strong\u003e\n    Braun lights using the 14500CY share a single-cell driver circuit tuned to a 3.7V nominal input. The cell's flat-top contact and 14.6mm diameter match the factory spring and tube geometry without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the bench. The protection circuit on the cell tripped correctly at low-voltage cutoff and accepted a full charge without thermal event at the rated 3.7V nominal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eSingle-cell replacement tip:\u003c\/strong\u003e\n    If your flashlight uses more than one 14500CY cell, replace all cells at the same time from the same production batch. Mixing a fresh cell with a partially degraded one forces the weaker cell to discharge first under high-current draw, accelerating its failure.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFlashlight driver stepping down output before the battery indicator reads low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA 14500 Li-ion cell's usable voltage window sits between roughly 4.2V (full) and 3.0V (cutoff). Flashlight drivers use brownout protection — they drop the light to a lower output mode when cell voltage sags under load, even when a basic indicator still shows charge remaining. This is the driver protecting the cell from deep discharge, not a fault. Switching to a lower output mode at this point lets you continue using the light while the remaining capacity drains more evenly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSignificantly shorter runtime in turbo mode vs. standard mode\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eTurbo mode on most single-cell 14500 flashlights draws 5–10 times the current of standard mode. An 800mAh cell delivering that burst current hits the driver's brownout threshold much faster than it would under a steady low-draw output. This is a physics constraint of the cell's capacity, not a defect. To extend each charge cycle, use turbo in short bursts and drop back to standard or low mode for sustained illumination.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377467424858,"sku":"BWCS-LMP510FT-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377467457626,"sku":"BWCS-LMP510FT-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377467490394,"sku":"BWCS-LMP510FT-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LMP510FT-1.webp?v=1778767154","url":"https:\/\/batteryweb.com\/products\/braun-replacement-battery-37v-800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}