{"product_id":"yaesu-vx-231-replacement-battery-74v-1380mah-li-ion","title":"Yaesu FNB-V103 VX-231 Replacement Battery 7.4V 1380mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eYaesu VX-231 \/ VX-230 Series — 7.4V Li-ion Replacement Battery (FNB-V103)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 1380mAh Li-ion replacement battery for the Yaesu VX-230, VX-231, VX-231L, and VX-234 portable two-way radios. It replaces OEM part numbers FNB-V103, FNB-V103LI, FNB-V104, FNB-V104LI, FNB-V131Li, and FNB-V132Li. The pack slots directly into the standard battery compartment on these radios.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVX-230 series compatibility:\u003c\/strong\u003e\n    The VX-230, VX-231, VX-231L, and VX-234 all share the same 7.4V battery bay, connector pinout, and BMS handshake protocol — that is why a single pack covers the entire series.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack on a VX-231 dock and radio unit. The BMS handshake completed on first insertion, the charger moved through its charge cycle without fault, and the cell voltage held steady under simulated transmit loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-insertion contact tip:\u003c\/strong\u003e\n    If the Yaesu charger dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly — the Vertex Standard platform requires a clean contact cycle to accept the new BMS handshake before charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VX-231 cuts out mid-transmission on a freshly installed FNB-V103\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew Li-ion cells ship at storage voltage — typically 3.6–3.7V per cell, not the 4.2V full-charge ceiling. When you key up on a partially charged pack, the transmit current spike can pull the cell voltage below the BMS overcurrent threshold momentarily, triggering a cutout. This is not a faulty pack. Fully charge the battery before first use and the cutouts stop. A full charge brings each cell to 4.2V, giving the BMS enough headroom to handle the PTT surge without tripping.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVX-231 bar indicator showing one fewer bar than expected with new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe VX-231 reads battery state through voltage thresholds only — each bar on the indicator corresponds to a specific voltage band. A new pack at storage voltage sits in a lower band, so the radio correctly displays fewer bars even though the cell capacity is full. This is not a defect in the pack or the radio. Charge the battery to 8.4V (full charge on a 7.4V 2S Li-ion pack) and the bar indicator will reflect the actual state of the cells.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426330411098,"sku":"BWCS-FVX230TW-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426330443866,"sku":"BWCS-FVX230TW-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426330476634,"sku":"BWCS-FVX230TW-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FVX230TW-1.webp?v=1779930719","url":"https:\/\/batteryweb.com\/products\/yaesu-vx-231-replacement-battery-74v-1380mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}