I-MO Pocket WiFi C01HW Replacement Battery 3.7V 1500mAh

I-MO Pocket WiFi C01HW — 3.7V Li-ion Replacement Battery

This 3.7V 1500mAh Li-ion battery replaces the original cell in the I-MO Pocket WiFi C01HW mobile hotspot. The C01HW runs a combined cellular modem and multi-device WiFi radio from a single small cell — so when that cell degrades, the whole unit either dies fast or refuses to boot. This battery restores the original capacity at 5.55Wh and matches the physical footprint at 65.23 x 41.98 x 5.21mm.

• C01HW power rail compatibility: The C01HW runs its modem and WiFi radio from a single 3.7V cell. Any voltage mismatch causes the BMS to cut the load before the modem can complete a session handshake. This cell sits at the correct nominal voltage and uses a connector profile matched to the C01HW's protection circuit.
• Bench tested on actual hardware: We cycled this battery under simultaneous modem and WiFi load — the BMS maintained stable voltage through repeated connection spikes and did not trigger false low-voltage cutoff during multi-device draw.
• Cellular signal and heat management: In weak signal areas the C01HW transmits at maximum radio power, which pushes heat directly into the battery. Keep the hotspot flat on a hard surface with airflow beneath it during extended sessions — trapped heat accelerates capacity fade faster than charge cycles alone.

Why the C01HW drops all connected devices mid-session

When several devices are connected and signal quality drops, the C01HW modem and WiFi radio both increase draw simultaneously. An aged or low-capacity cell cannot hold voltage steady under that combined spike. The BMS reads the sag as a fault and cuts output — all connected devices lose their sessions at once. A fresh cell with adequate capacity sustains voltage through those combined draw peaks without triggering the cutoff.

C01HW won't boot after sitting unused for several weeks

The C01HW draws a small standby current even when powered off, and a degraded cell can drop below the minimum boot voltage — typically around 3.0V — within a few weeks of storage. Below that threshold the device's protection circuit blocks startup entirely to prevent cell damage. Plug the unit into the charger for at least 15 minutes before pressing the power button. If the charge indicator does not respond after 30 minutes of charge, the original cell has likely dropped below recovery voltage and needs replacing.