{"product_id":"ascom-21-replacement-battery-74v-1400mah-li-ion","title":"Ascom 21 Satellite Phone Replacement Battery 7.4V 1400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAscom 21 — 7.4V Li-ion Replacement Battery (TH-01-006)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 1400mAh Li-ion battery fits the Ascom 21 satellite phone. It replaces OEM part numbers TH-01-006 and CP0119. The Ascom 21 operates on satellite networks for voice and messaging in areas with no cellular coverage — the battery supports that full communication load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAscom 21 fit:\u003c\/strong\u003e\n    The Ascom 21 uses a dedicated 7.4V two-cell Li-ion pack with a BMS that handshakes with the phone's charge controller. This replacement matches that voltage rail and connector configuration. Swapping a mismatched pack will trigger a charge rejection at the host port.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through satellite acquisition cycles, which draw sharp current spikes as the antenna locks onto a constellation. The BMS held cutoff thresholds correctly across repeated acquisition attempts and sustained transmit loads at full power.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-field storage tip:\u003c\/strong\u003e\n    In sub-zero conditions, keep this battery in an inner jacket pocket before use. Li-ion internal resistance rises sharply below 0°C, and the satellite acquisition current spike can trip the BMS on a cold cell before the phone ever connects to a satellite.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAscom 21 shutting down during satellite acquisition\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSatellite acquisition on the Ascom 21 pulls a sharp, sustained current spike as the radio module scans and locks onto a satellite. This momentary high-draw event stresses the BMS more than a steady voice call does. If the cell voltage dips under load — particularly in cold conditions or on an aged pack — the BMS trips the output to protect the cells. The fix is a fresh pack at full charge, above 8.2V open-circuit, before heading into the field.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger not accepting the battery after extended storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that sit discharged for weeks can drop below the charger's acceptance threshold — typically around 2.5V per cell, or roughly 5.0V for the full 7.4V pack. Most chargers see this as a fault condition and refuse to initiate a charge cycle. To recover the pack, use a charger with a trickle or recovery mode that can push a low precharge current until the cells climb back above the acceptance floor. Once the pack reads above 6.0V, a standard charge cycle will complete normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416122359898,"sku":"BWCS-TS7100SL-1","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416122392666,"sku":"BWCS-TS7100SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416122425434,"sku":"BWCS-TS7100SL-3","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TS7100SL-1.webp?v=1779760331","url":"https:\/\/batteryweb.com\/products\/ascom-21-replacement-battery-74v-1400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}