{"product_id":"thuraya-satsleeve-replacement-battery-37v-2400mah-li-polymer","title":"Thuraya SatSleeve Replacement Battery 3.7V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eThuraya SatSleeve Series — 3.7V Li-Polymer Replacement Battery (HKT05854)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2400mAh Li-Polymer battery for the Thuraya SatSleeve, SatSleeve+, and SatSleeve Hotspot. All three share the same cell format, connector, and BMS handshake, so one part number covers the full range. Capacity figure is 8.88Wh, taken from product data — not estimated from web sources.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSatSleeve, SatSleeve+, SatSleeve Hotspot compatibility:\u003c\/strong\u003e\n    All three models use the same 3.7V cell with identical physical dimensions (58.00 × 43.20 × 9.10mm) and the same BMS communication protocol — no firmware mismatch, no connector adaptation needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through satellite acquisition sequences — the current spike when the antenna deploys and the L-band radio locks onto a satellite is the hardest draw this battery sees. The BMS held cutoff thresholds correctly through repeated acquisition events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-field storage tip:\u003c\/strong\u003e\n    Li-Polymer internal resistance rises sharply below 0°C. Before use in sub-zero conditions, keep the battery in an inner jacket pocket for at least 20 minutes — a cold cell can trip its own BMS on the acquisition current spike before the satellite lock completes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SatSleeve shuts down during satellite acquisition\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSatellite acquisition is the highest-draw moment for this device — the antenna deploys, the L-band radio searches at full power, and the processor handles signal processing simultaneously. This creates a short but sharp current spike that can exceed what a degraded or cold cell can sustain. The BMS reads the resulting voltage sag as an undervoltage event and cuts output to protect the cell. A healthy, room-temperature pack at adequate state of charge clears this threshold without tripping.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger shows no activity after the battery has been in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge slowly in storage, and if a pack sits long enough, the cell voltage drops below the charger's acceptance threshold — typically around 2.5V for this chemistry. The charger sees the voltage and refuses to begin a standard charge cycle, so the LED stays dark or shows a fault. Most chargers have a trickle pre-charge mode that can recover cells down to roughly 2.0V — leave the pack on charge for 30–60 minutes before assuming it is dead. If the cell has dropped below 2.0V, recovery is unlikely and the pack should be replaced.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416118427738,"sku":"BWCS-TRS058SL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416118460506,"sku":"BWCS-TRS058SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416118493274,"sku":"BWCS-TRS058SL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TRS058SL-1.webp?v=1779760331","url":"https:\/\/batteryweb.com\/products\/thuraya-satsleeve-replacement-battery-37v-2400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}