{"product_id":"sepura-stp8000-replacement-battery-74v-1880mah-li-polymer","title":"Sepura STP8000 Compatible Battery 7.4V 1880mAh 300-00635","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSepura STP8000 \/ STS8000 Series — 7.4V Li-Polymer Replacement Battery (300-00635)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 1880mAh Li-Polymer pack replaces the original Sepura battery across the STP8000, STS8000, STP8038, STP8030, and more than 26 additional STP\/STS variants. It matches the OEM voltage rail and BMS profile required by Sepura's TETRA portable radio platform. Capacity is 1880mAh (13.91Wh) — matching the standard-capacity factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTP\/STS platform compatibility:\u003c\/strong\u003e\n    All listed STP8000 and STS8000 variants share the same 7.4V power rail, contact layout, and BMS handshake protocol. That shared architecture means one battery covers the full range without modification or adapter.\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 transmit-load discharge on STP8000 hardware. The BMS held stable across PTT bursts, and charge acceptance on the Sepura desktop charger completed without fault indication.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion on the Sepura dock:\u003c\/strong\u003e\n    If the charger shows a fault LED on first insertion, 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 freshly inserted battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eTETRA radios draw a sharp current spike the moment PTT is pressed — the transmit burst can pull well above the radio's standby draw in under a millisecond. If the replacement pack arrives at storage voltage (typically around 3.7V per cell), the BMS may interpret that spike as an overcurrent event and trip the protection circuit before the radio completes the transmission. This is not a faulty pack. Charge the battery fully on the Sepura dock before first use in the field — the BMS resets once cells reach the full 8.4V charge threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting this pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STP8000 uses a simple voltage-threshold bar indicator — each bar corresponds to a voltage band, not a calculated capacity. A new cell shipped at storage voltage reads in a lower band and displays one fewer bar than a fully charged pack. This is normal and not a sign of low capacity. Charge the pack fully on the Sepura dock and the indicator will step up to the correct level once resting voltage settles above the top threshold, typically 8.2V or above.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426350661722,"sku":"BWCS-SPR800TW-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426350694490,"sku":"BWCS-SPR800TW-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426350727258,"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\/sepura-stp8000-replacement-battery-74v-1880mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}