{"product_id":"rca-lyra-x2400-replacement-battery-37v-1800mah-li-ion","title":"RCA Lyra X2400 Replacement Battery 3.7V 1800mAh RD2400A-BAT","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRCA Lyra X2400 — 3.7V Li-ion Replacement Battery (RD2400A-BAT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1800mAh Li-ion replacement battery for the RCA Lyra X2400 portable media player. It matches the OEM part number RD2400A-BAT and fits the X2400 directly. Install it when the original cell no longer holds a charge or the player shuts down mid-use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLyra X2400 fit:\u003c\/strong\u003e\n    The X2400 uses a single-cell Li-ion pack at 3.7V nominal. The connector pinout and physical dimensions — 53.00 × 35.30 × 11.00mm — match the OEM cell, so no modification is needed to seat this battery in the original bay.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the X2400 platform and confirmed the BMS handshake completes correctly. The protection circuit trips at the expected low-voltage cutoff without freezing the firmware.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after install:\u003c\/strong\u003e\n    Media players coming out of storage often sit in deep discharge protection. After fitting this battery, connect the charger and leave it for at least 30 minutes before attempting to power on — the device needs trickle current to exit the protection state before it accepts a normal charge cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping after cell swap on the Lyra X2400\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe X2400 reads battery level by measuring cell voltage against fixed thresholds stored in firmware. A new cell has a slightly different discharge curve than a worn original, so the indicator recalibrates over the first few cycles. Expect the percentage to jump or drop suddenly — especially between 60% and 20% — for the first two to three full charge cycles. Run the battery down to auto-shutdown and charge it fully each time; the indicator stabilises once the firmware has mapped the new cell's curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePlayback cutting out before the battery indicator shows empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe audio amplifier inside the X2400 draws a brief current spike every time it drives headphone output at higher volumes. Near the end of discharge — typically below 3.5V — the cell can no longer supply that spike without the voltage sagging below the amplifier's operating floor. The player interprets this as a fault and cuts audio before the battery indicator reaches zero. This is a voltage-sag issue, not a capacity defect. If it happens consistently, check that the charge cycle completes fully to 4.2V before each use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333868191834,"sku":"BWCS-RD2400SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333868224602,"sku":"BWCS-RD2400SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333868257370,"sku":"BWCS-RD2400SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RD2400SL-1.webp?v=1778900029","url":"https:\/\/batteryweb.com\/products\/rca-lyra-x2400-replacement-battery-37v-1800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}