Hytera P30 Replacement Battery BP3301 3.85V 3300mAh

Hytera P30 / P30 PoC Radio — 3.85V Li-Polymer Replacement Battery (BP3301)

The BP3301 is a 3.85V, 3300mAh Li-Polymer battery for the Hytera P30 and P30 PoC portable digital radio. Both variants share the same battery bay dimensions and BMS interface, so one part number covers the full P30 platform. Capacity is sourced from the product data: 3300mAh (12.71Wh).

• P30 and P30 PoC platform fit: Both models use the same 3.85V rail, identical connector pinout, and a shared BMS handshake protocol. A single BP3301 pack seats and communicates correctly in either variant without modification.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on a P30 unit. The BMS responded correctly to transmit current spikes, held the protection threshold without nuisance tripping, and accepted a standard Hytera dock charge cycle without fault.
• First insertion on the Hytera dock: If the dock LED blinks fault on first seating, remove the pack and wipe the gold contact strip with a dry cloth. The Hytera charging dock requires a clean contact surface to complete the initial BMS handshake — a brief contact contamination is enough to block acceptance.

P30 cutting out mid-transmission on a new BP3301

When you press PTT, the P30 draws a sharp current spike to power the RF output stage. A new Li-Polymer cell at storage voltage — typically around 3.7V — sits close to the BMS undervoltage threshold before any load is applied. That spike can push internal resistance high enough that the BMS registers a transient undervoltage and trips the output. Running two or three full charge cycles brings cell voltage and internal resistance to normal operating range, and the cutout stops.

P30 bar indicator showing one fewer bar than expected on a new pack

The P30 uses voltage-threshold bar indicators, not a fuel gauge chip. A new cell shipped at storage voltage reads lower than a fully charged cell, so the radio maps it to a lower bar level even though the pack is not depleted. Charge the BP3301 to full on a Hytera dock — target terminal voltage is approximately 4.35V for this chemistry — and the bar indicator will reflect the correct state on the next power cycle.