{"product_id":"rii-mini-i24-replacement-battery-37v-650mah-li-polymer","title":"Rii mini i24 Replacement Battery 3.7V 650mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRii mini i24 \/ i24T \/ RT-MWK24T — 3.7V Li-Polymer Replacement Battery (1507-030408)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 650mAh lithium-polymer battery replaces the internal cell in the Rii mini i24, i24T, and RT-MWK24T wireless keyboard. It matches the original dimensions at 52.30 x 33.53 x 3.90mm, so it seats correctly in the keyboard cavity without modification. When the stock battery swells or holds no charge, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRii mini i24 series fit:\u003c\/strong\u003e\n    The i24, i24T, and RT-MWK24T share the same internal battery bay, connector orientation, and 3.7V supply rail. All three accept this cell without adapter wiring or connector rework.\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 i24 platform. The protection circuit held cutoff at the correct low-voltage threshold and accepted charge from the keyboard's onboard charging circuit without fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eConnector orientation on reassembly:\u003c\/strong\u003e\n    The i24 series routes the battery connector along the left side of the PCB. Reverse-seating the connector will trigger the protection circuit and the keyboard will not power on — confirm polarity before closing the housing.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKeyboard pairing lost after battery swap on the Rii i24\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the i24's battery drops to full depletion before replacement, the keyboard's volatile pairing memory loses its USB receiver link. This is not a fault with the new battery — it is a consequence of complete power loss to the onboard controller. After fitting the replacement cell, hold the pairing button on the keyboard for three seconds, then replug the USB nano-receiver to force a fresh handshake. The Rii i24T and RT-MWK24T follow the same re-pair sequence.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKeyboard input dropping characters at low battery voltage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAs the Li-Polymer cell discharges toward 3.2V, the i24's wireless transmitter begins operating below its stable voltage window. The result is intermittent keystroke dropouts — characters appear missing or delayed on screen. This is not a USB receiver fault or driver issue. Charge the battery until the indicator shows full; dropouts stop once cell voltage returns above 3.6V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377923522650,"sku":"BWCS-MRT240TX-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377923555418,"sku":"BWCS-MRT240TX-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377923588186,"sku":"BWCS-MRT240TX-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MRT240TX-1.webp?v=1778773965","url":"https:\/\/batteryweb.com\/products\/rii-mini-i24-replacement-battery-37v-650mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}