{"product_id":"coby-tfdvd7752-replacement-battery-74v-2600mah-li-polymer","title":"Coby TFDVD7752 Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCoby TFDVD7752 — 7.4V Li-Polymer Replacement Battery (AHB772992P-2S)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2600mAh lithium-polymer battery for the Coby TFDVD7752 portable DVD player. It replaces part number AHB772992P-2S and restores the player's ability to run on battery power away from a wall outlet. Dimensions are 96.10 x 31.00 x 16.50mm — confirm these against your existing battery before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTFDVD7752 fit:\u003c\/strong\u003e\n    The TFDVD7752 uses a two-cell lithium-polymer pack at 7.4V nominal. The AHB772992P-2S connector and cell configuration match the player's battery bay and protection circuit handshake directly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on the bench. The BMS responded correctly to charge termination and did not trigger overcurrent cutoff during disc motor spin-up, which pulls a brief current spike above steady-state draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eTemperature during simultaneous charging and playback:\u003c\/strong\u003e\n    Avoid running disc playback while the player is charging. The combined load — disc motor, display backlight, and charging current — raises cell temperature and can cause the thermal protection circuit to throttle output before the pack is depleted.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the TFDVD7752 disc stops spinning before the battery indicator reads low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe disc motor draws its highest current at spin-up and during seek operations. As a lithium-polymer cell ages or sits at storage voltage, its internal resistance rises. That resistance causes a short voltage sag during peak current demand — enough to trip the BMS overcurrent threshold even when the reported state of charge looks adequate. A fresh, fully charged pack at 8.4V will sustain spin-up current without triggering that cutoff. If disc stop is the only symptom, charge the replacement pack to full before drawing conclusions about fit.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eScreen backlight dimming mid-movie on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TFDVD7752 display driver monitors the supply rail and steps down backlight brightness when voltage sags below a set threshold. This happens when the pack is not fully charged or when cell temperature climbs during extended playback. It is not a fault with the battery itself — it is a protective response from the display circuit. Charge the pack fully to 8.4V before use and avoid covering the player's ventilation area during long sessions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360230309978,"sku":"BWCS-CBD775SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360230342746,"sku":"BWCS-CBD775SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360230375514,"sku":"BWCS-CBD775SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CBD775SL-1.webp?v=1778610981","url":"https:\/\/batteryweb.com\/products\/coby-tfdvd7752-replacement-battery-74v-2600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}