{"product_id":"yaesu-vx3-replacement-battery-37v-1200mah-li-ion","title":"Yaesu VX-3 Replacement Battery 3.7V 1200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eYaesu VX-3 — 3.7V Li-ion 1200mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion replacement battery for the Yaesu VX-3 handheld transceiver. It fits the compact VX-3 body and matches the original cell format at 53.60 × 35.60 × 6.40mm. No OEM part number is published by Yaesu for this pack, so fitment is confirmed by physical dimensions and voltage rail.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVX-3 platform fit:\u003c\/strong\u003e\n    The VX-3 runs a single-cell 3.7V Li-ion rail with a compact form factor shared across its slim chassis. The BMS in this pack matches that voltage rail and communicates charge acceptance correctly with the VX-3's dedicated desktop cradle charger.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and transmit load on the VX-3. The BMS held stable across repeated PTT presses at full transmit current draw, with no unexpected cutoff events during sustained RF output.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-insertion contact check:\u003c\/strong\u003e\n    If the VX-3 charger cradle shows a fault indication on first seating, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The cradle requires a clean contact cycle to complete the BMS handshake before it begins charging.\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-3 cuts out mid-transmission on a freshly inserted battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at storage voltage — typically around 3.6–3.7V — not at full charge. When the VX-3 transmits, it draws a current spike that can push a storage-voltage cell briefly below the BMS undervoltage threshold. The BMS interprets this as a depleted cell and trips the output. This is not a faulty pack. Charge the battery fully in the cradle before the first field use and the cutout will not recur.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after a full charge cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe VX-3 uses a simple voltage-threshold bar display — each bar corresponds to a fixed voltage step, not a fuel gauge calculation. A new cell straight off its first charge may read one bar low because cell voltage hasn't stabilised after the initial cycle. Run one full discharge and recharge cycle and the resting voltage will settle above the next threshold. If the bar count still reads low after two full cycles, check resting voltage with a multimeter — a healthy fully charged cell should sit at or above 4.1V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426280210522,"sku":"BWCS-BAF300TW-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426280243290,"sku":"BWCS-BAF300TW-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426280276058,"sku":"BWCS-BAF300TW-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BAF300TW-1.webp?v=1779930583","url":"https:\/\/batteryweb.com\/products\/yaesu-vx3-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}