Radon 301 Compatible Battery АН-17 7.2V 2000mAh Ni-MH

Radon 301 — 7.2V Ni-MH Replacement Battery (АН-17)

This 7.2V, 2000mAh Ni-MH battery replaces the original АН-17 pack in the Radon 301 handheld two-way radio. It matches the voltage rail, connector footprint, and BMS handshake the 301 platform expects. Capacity is taken directly from the product specification — 14.4Wh total energy.

• Radon 301 platform fit: The 301 uses a fixed 7.2V Ni-MH cell stack with a specific contact layout. Any deviation in voltage or connector geometry prevents dock acceptance. This pack replicates that stack exactly, so the charger dock reads the new battery the same way it read the original.
• Bench tested on actual hardware: We cycled this pack through full charge and transmit-load discharge on the 301 platform. The BMS held stable through multiple PTT press sequences without tripping overcurrent cutoff at normal transmit current levels.
• First insertion contact check: If the charger dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The 301 dock requires a clean contact cycle to complete the BMS handshake before charging begins.

Why the Radon 301 cuts out mid-transmission on a new Ni-MH pack

Ni-MH cells ship at storage voltage — typically 1.1–1.2V per cell — not at full charge. When the 301's transmit circuit draws peak current on PTT, a partially charged Ni-MH stack sags below the radio's undervoltage cutoff threshold and the BMS trips the output. This looks like a dead battery but is a voltage sag issue on a pack that hasn't completed its first full charge cycle. Run the pack through at least one complete charge before your first transmission-heavy use. Once cells reach full charge voltage, sag under transmit load drops significantly and the cutoff stops triggering.

Bar indicator showing one fewer bar than expected after fitting a new АН-17 pack

The Radon 301 uses a voltage-threshold bar indicator — it reads resting cell voltage and maps it to bars on the display. A new Ni-MH pack at storage voltage sits below the threshold for the top bar, so the display shows one bar fewer than a fully charged pack would show. This is not a capacity fault. Charge the pack fully and the indicator will step up to the correct bar level. If it still reads low after a full charge, check that the dock contacts are clean and the charge cycle completed — a dirty contact can abort charging early.