{"product_id":"dremel-lite-7760-replacement-battery-37v-2900mah-li-ion","title":"Dremel Lite 7760 3.7V Replacement Battery 2900mAh Li-Ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDremel Lite 7760 Cordless Rotary Tool — 3.7V Li-Ion Replacement Battery\u003c\/h2\u003e\n  \u003cp class=\"bpw-desc-lead\"\u003eThis listing is for a 3.7V, 2900mAh Li-Ion replacement battery for the Dremel Lite 7760 cordless rotary tool. The Lite 7760 runs on USB-charged 4V-class Li-Ion power to drive its 8,000–25,000 RPM motor across sanding, engraving, and detail work. Capacity is rated at 10.73Wh with dimensions of 66.65 x 19.50 x 18.50mm.\u003c\/p\u003e\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFits Lite 7760, 7760-N\/10W, and 7760AA:\u003c\/strong\u003e These variants share the same 3.7V battery architecture, connector type, and BMS communication protocol, so one replacement battery covers the full model range.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e We ran full charge\/discharge cycles — the BMS held voltage steady under motor load and cut off cleanly at the low-voltage threshold without triggering a fault state.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after long storage:\u003c\/strong\u003e If the tool has been sitting unused, run a full charge before first use — Li-Ion cells that drop below the BMS recovery threshold may need a slow trickle to wake before accepting a normal charge cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003chr class=\"bpw-desc-divider\"\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy cell capacity matters in a high-RPM rotary tool\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Lite 7760 can swing from 8,000 to 25,000 RPM across four speed settings. Higher speeds draw more current from the cell. A 2900mAh cell at this voltage gives the BMS enough headroom to sustain peak draw at top speed without immediately triggering low-voltage protection and dropping RPM mid-cut.\u003c\/p\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTool loses power or shuts off mid-use — here's the cause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the Lite 7760 cuts out suddenly during use, the BMS is likely hitting its undervoltage cutoff because the original cell has degraded capacity. A worn cell can no longer hold voltage under the current spike of high-speed operation. Swapping to a fresh 2900mAh cell restores the voltage buffer the BMS needs to stay in normal operating range. After installing, complete one full charge cycle before running the tool at max speed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43175822426202,"sku":"BWCS-WGF300VX-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43175822458970,"sku":"BWCS-WGF300VX-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43175822491738,"sku":"BWCS-WGF300VX-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WGF300VX-1.webp?v=1775236276","url":"https:\/\/batteryweb.com\/products\/dremel-lite-7760-replacement-battery-37v-2900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}