Rogers Rocket Mobile HotSpot Compatible Battery 3.7V 1100mAh

Rogers Rocket Mobile HotSpot — 3.7V Li-ion Replacement Battery

This 3.7V 1100mAh Li-ion battery fits the Rogers Rocket Mobile HotSpot. It replaces the original cell when capacity fades or the unit stops holding charge. The hotspot shares Rogers cellular internet over Wi-Fi with laptops, tablets, and phones.

• Rocket Mobile HotSpot fit: The Rocket HotSpot runs a combined cellular modem and multi-device Wi-Fi radio from a single 3.7V cell. Both radios share the same power rail, so the replacement cell must match the original voltage and physical footprint exactly — this unit does at 65.17 x 42.87 x 4.47mm.
• Bench tested on actual hardware: We loaded the hotspot with simultaneous Wi-Fi clients while the cellular modem ran at full output. The BMS held voltage steady through peak draw spikes and triggered low-voltage cutoff cleanly without dropping into an unrecoverable state.
• Signal environment tip: Keep the hotspot near a window when possible. In weak-signal areas the cellular radio locks to maximum transmit power continuously, which raises the cell temperature and accelerates capacity fade over repeated charge cycles.

Why the Rocket HotSpot disconnects all clients mid-session

When several devices are connected simultaneously, the combined modem and Wi-Fi draw can pull the cell voltage below the BMS protection threshold in brief spikes. The BMS reads this as an unsafe condition and cuts output, dropping all connected clients instantly. This happens more often in poor-coverage areas where the modem is pushing maximum radio output. A fresh cell with stable internal resistance reduces these voltage sag events significantly.

HotSpot shows charged but won't boot after sitting unused

Li-ion cells self-discharge during storage. If the Rocket HotSpot sat unused for several weeks, the cell may have dropped below the minimum boot voltage the firmware requires to start the modem — typically around 3.0V. The device shows no response or a brief flash and shutdown. Connect it to the charger for at least 20–30 minutes before attempting to power on, allowing the cell to recover above that 3.0V threshold.