FreedomPop Mobile 4G Hotspot Compatible Battery 3.7V 1700mAh

FreedomPop Mobile 4G Hotspot / Spot Photon Platinum Edition — 3.7V Li-Polymer Replacement Battery

This 3.7V, 1700mAh lithium-polymer battery replaces the original cell in the FreedomPop Mobile 4G Hotspot and Spot Photon Platinum Edition. These compact hotspot devices run a cellular modem and a Wi-Fi radio simultaneously, and the original battery degrades faster than most phone batteries because of that combined draw. Dimensions are 55.50 × 47.30 × 5.10mm — verify against your existing cell before installing.

• Mobile 4G Hotspot and Spot Photon Platinum Edition: Both devices share the same battery footprint, connector orientation, and voltage rail. The onboard BMS communicates state-of-charge to the hotspot firmware — a mismatched cell triggers false low-battery warnings or premature shutdowns.
• Bench tested on actual hardware: We ran this cell under combined modem and Wi-Fi load at maximum connected devices. The BMS held voltage above the 3.2V cutoff threshold without tripping, and the charge cycle completed cleanly from 3.0V to 4.2V.
• Ventilation during extended sessions: Keep the hotspot on a hard, open surface when running multiple connected devices. The cellular radio pushes to maximum output in poor signal areas, and heat build-up directly shortens cell lifespan — a pocket or enclosed case makes this significantly worse.

Hotspot warm during extended sessions on a new battery

A new 1700mAh cell does not eliminate heat — it resets capacity, not power draw. When several devices are connected and the cellular signal is weak, both radios run at peak output simultaneously. That sustained draw generates heat inside the chassis, and the battery absorbs it. Heat above 45°C accelerates electrolyte breakdown in lithium-polymer cells, so consistent warmth during sessions will shorten the replacement battery faster than normal cycling would.

Hotspot not powering on after sitting unused for weeks

Lithium-polymer cells self-discharge at roughly 2–3% per month, but a hotspot left in standby keeps the modem registration circuit active and drains the battery far faster than that. If the cell drops below approximately 2.5V, the BMS locks out the discharge path and the device shows no response to the power button. To recover it, connect the hotspot to a charger for at least 20–30 minutes before attempting to boot — the charger bypasses the BMS lockout and trickle-charges the cell back above the minimum boot voltage of 3.0V.