{"product_id":"simoco-sepura-tetra-stp8000-replacement-battery-74v-1880mah-li-polymer","title":"Simoco-Sepura STP8000 Compatible Battery 7.4V 1880mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSimoco-Sepura Tetra STP8000 Series — 7.4V Li-Polymer Replacement Battery (STP8000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 1880mAh Li-Polymer battery replaces the factory pack in the Simoco-Sepura Tetra STP8000 portable radio. It fits the STP8000, STS8000, STP8038, STP8030, and more than ten additional STP8000-series variants. Same voltage, same connector, same BMS handshake protocol as the original.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTP8000 platform compatibility:\u003c\/strong\u003e\n    Every radio in this series runs the same 7.4V rail and uses the same contact layout and BMS communication protocol — that is why one battery covers the STP8000, STS8000, STP8038, and STP8030 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 full charge and discharge on the STP8000 platform. The BMS accepted the dock handshake on first insertion and held voltage within spec across the full PTT transmit cycle.\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 STP8000 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 STP8000 cuts out mid-transmission on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell ships at storage voltage — typically 3.7–3.8V per cell, not the 4.2V full-charge peak. When you key the PTT on a new, uncharged pack, the transmit current spike can pull cell voltage below the BMS overcurrent threshold in under a second. The BMS trips and the radio goes silent, even though the pack is not faulty. Always charge the replacement battery fully in the dock before the first shift. The dock should show a solid green or full-bar indicator before you rely on the radio in service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STP8000 reads voltage-threshold steps to drive its bar indicator — it does not use a chip-level capacity counter. A new pack at storage voltage sits in a lower threshold band and will display one or two fewer bars than a fully charged cell. This is not a defect in the replacement pack. Charge the battery completely in the dock, then reinsert it. The indicator should step up to its correct position at or above 7.9V resting voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426350792794,"sku":"BWCS-SPR800TW-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426350825562,"sku":"BWCS-SPR800TW-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426350858330,"sku":"BWCS-SPR800TW-3","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPR800TW-1.webp?v=1779930881","url":"https:\/\/batteryweb.com\/products\/simoco-sepura-tetra-stp8000-replacement-battery-74v-1880mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}