{"product_id":"eads-thr9-replacement-battery-37v-2300mah-li-ion","title":"EADS BLN-5i Replacement Battery THR9 3.7V 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEADS THR9 Series — 3.7V Li-ion Replacement Battery (BLN-5i \/ BLN-6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2300mAh Li-ion battery pack for the EADS THR9, THR9i, and THR9 C-30 portable two-way radios. It replaces OEM part numbers BLN-5i and BLN-6. Dimensions are 97.46 × 53.62 × 14.96mm — same physical envelope as the original pack.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTHR9 \/ THR9i \/ THR9 C-30 fit:\u003c\/strong\u003e\n    All three variants run the same 3.7V single-cell architecture with the same connector and BMS handshake protocol. One pack covers the full lineup without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and load discharge on the THR9 platform. The BMS engaged overcurrent protection correctly at transmit-draw peaks and released cleanly on PTT release without latching lockout.\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 seating, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The THR9 dock requires a clean contact cycle to complete the 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 THR9 cuts out mid-transmission on a freshly inserted battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew cells ship at storage voltage — typically 3.6–3.7V — not at full charge. When you key up, transmit current spikes sharply and can pull the resting cell voltage below the BMS overcurrent threshold for a fraction of a second. The BMS trips, the radio drops off air, and it recovers only when PTT is released. One full charge cycle before operational use brings cell voltage up to 4.1–4.2V and gives the BMS the headroom it needs to handle transmit spikes without tripping.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTHR9 bar indicator showing one fewer bar than expected on a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe THR9 uses a simple voltage-threshold bar indicator — each bar corresponds to a fixed voltage band. A new pack at storage voltage sits in a lower band and displays one fewer bar than a fully charged cell. This is not a capacity fault. Charge the pack fully in the dock until the LED goes green, then reinsert. The indicator will move to the correct bar at or above 4.1V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426313306202,"sku":"BWCS-ETH900TW-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426313338970,"sku":"BWCS-ETH900TW-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426313371738,"sku":"BWCS-ETH900TW-3","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ETH900TW-1.webp?v=1779930633","url":"https:\/\/batteryweb.com\/products\/eads-thr9-replacement-battery-37v-2300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}