{"product_id":"radon-351-replacement-battery-72v-2500mah-ni-mh","title":"Radon 351 Two-Way Radio Replacement Battery 7.2V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRadon 351 \/ 352 — 7.2V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V 2500mAh Ni-MH battery for the Radon 351 and 352 two-way radios. It replaces the original pack directly, restoring full transmit power to radios where the existing cell has degraded. Capacity figure is from the product specification — 18Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e351 and 352 platform fit:\u003c\/strong\u003e\n    Both models run the same 7.2V rail with a shared connector footprint and BMS handshake profile. One battery serves both without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through transmit-load draws and confirmed the BMS holds the voltage rail steady through sustained PTT keying without tripping into overcurrent cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion contact check:\u003c\/strong\u003e\n    If the charger dock shows a fault LED on first insertion, remove the pack, wipe the contact strip with a dry cloth, and reseat firmly. The dock needs a clean contact cycle to read the BMS correctly before it will begin 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 Radon 351 cuts out mid-transmission on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Ni-MH cell ships at storage voltage — typically 1.1–1.2V per cell, which puts this 6-cell pack around 6.6–7.2V before any conditioning. When you key PTT, transmit current spikes sharply. If the cell hasn't taken a full charge first, the voltage sags under that load and the BMS can trip the output to protect the pack. The radio then drops out mid-transmission. Run one full charge cycle before first use to bring the cells to operating voltage before placing the radio in service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting a new pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Radon 351 uses a voltage-threshold bar indicator — it reads resting cell voltage and maps it to bars on screen. A new pack at storage voltage reads lower than a fully charged one, so the display shows one or two bars short of full. This is not a fault with the battery or the radio. Charge the pack fully and the indicator will step up to its correct reading. Expect the bar display to settle at maximum after the first complete charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426308096090,"sku":"BWCS-TAP910TW-1","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426308128858,"sku":"BWCS-TAP910TW-2","price":102.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426308161626,"sku":"BWCS-TAP910TW-3","price":111.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TAP910TW-1.webp?v=1779930602","url":"https:\/\/batteryweb.com\/products\/radon-351-replacement-battery-72v-2500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}