Stabo Freecomm 850 Compatible Battery 3.7V 2000mAh

Stabo Freecomm 850 — 3.7V Li-Polymer Replacement Battery (ICP083448)

This 3.7V, 2000mAh lithium-polymer battery replaces the OEM pack in the Stabo Freecomm 850 portable two-way radio. It matches the original ICP083448 specification and fits the Freecomm 850 battery compartment directly. Dimensions are 47.00 × 40.00 × 10.10mm — confirm against your existing pack before ordering.

• Freecomm 850 fit: The Freecomm 850 runs a single-cell 3.7V Li-Polymer architecture with a low-current BMS sized for voice-burst TX loads. Any replacement must match that voltage rail exactly — a cell even 0.1V higher at full charge will trip the radio's internal protection circuit on first PTT press.
• Bench tested on actual hardware: We cycled this pack through repeated PTT bursts to confirm the BMS handles the transmit current spike without tripping into overcurrent lockout. The protection circuit held stable across sustained transmission sequences.
• First-insertion contact check: If the Freecomm 850 charger shows a fault indicator after inserting this pack, remove it, wipe the gold contact strip with a dry cloth, and reseat firmly. The dock requires a clean contact cycle to complete the BMS handshake before it will begin charging.

Why the Freecomm 850 drops to low TX power mid-shift on a new pack

New Li-Polymer cells ship at storage voltage — typically 3.6–3.75V — not full charge. Under sustained RF output, that lower starting voltage sags further under transmit load. The Freecomm 850 interprets the sag as a weak pack and throttles TX power to protect the RF stage. A full charge cycle before first use brings the cell to 4.2V and eliminates this behaviour.

Bar indicator shows one fewer bar than expected after fitting a new ICP083448

The Freecomm 850 uses a voltage-threshold bar indicator — it reads cell voltage directly, not stored charge data. A new pack at storage voltage reads lower than a fully charged cell, so the radio displays one fewer bar even though the pack is not faulty. Charge the pack fully in the dock until the charge LED goes green, then recheck the indicator. At 4.2V the display will show the correct bar count.