{"product_id":"softbank-c01hw-replacement-battery-37v-1500mah-li-ion","title":"SoftBank C01HW Replacement Battery 3.7V 1500mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSoftBank C01HW — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1500mAh Li-ion replacement battery for the SoftBank C01HW mobile hotspot. It fits the C01HW directly and restores full hotspot operation when the original cell has degraded. Capacity is rated at 1500mAh (5.55Wh) — taken from verified product data, not estimated.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC01HW platform fit:\u003c\/strong\u003e\n    The C01HW runs a single-cell 3.7V Li-ion architecture. The battery connector, BMS handshake, and charge profile are matched to the device's charging IC — swap is direct with no firmware or configuration change required.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery under combined modem and Wi-Fi load with multiple clients connected. The BMS held the discharge curve without triggering low-voltage cutoff prematurely and accepted a full charge cycle without fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCellular signal and heat management:\u003c\/strong\u003e\n    Keep the C01HW in open air during extended sessions. When signal is weak, the cellular radio ramps to maximum transmit power — the combined modem and radio load generates heat that accumulates fast in a pocket or bag, accelerating cell degradation over time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the C01HW drops connected devices mid-session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe C01HW powers both its cellular modem and Wi-Fi radio from the same battery rail. When multiple clients are active and cellular signal is marginal, combined current draw spikes sharply. A weakened or partially depleted cell cannot sustain the voltage under that spike, and the BMS triggers a protective cutoff — the hotspot reboots or drops connections entirely. A fresh cell at full charge handles the surge without hitting BMS thresholds.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eC01HW won't power on after sitting unused\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage — typically 1–2% per month under normal conditions, faster if stored warm. If the C01HW has been unused for several months, the battery may have dropped below the minimum boot voltage, which is approximately 3.0V for most Li-ion BMS configurations. The device will appear completely dead and won't respond to the power button. Connect it to a charger for at least 20–30 minutes before attempting to power on — the BMS needs to confirm a safe cell voltage before it will allow discharge to the system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377850417242,"sku":"BWCS-SBX150RX-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377850450010,"sku":"BWCS-SBX150RX-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377850482778,"sku":"BWCS-SBX150RX-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SBX150RX-1.webp?v=1778773940","url":"https:\/\/batteryweb.com\/products\/softbank-c01hw-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}