Hytera PD7 Replacement Battery BL2008 7.4V 2000mAh

Hytera PD785 Series — 7.4V Li-ion Replacement Battery (BL2008 / BL2503 / BL3001)

This 7.4V 2000mAh Li-ion pack replaces the BL2008, BL2503, and BL3001 batteries in the Hytera PD7, PD785, and PD785G digital portable radios. It fits the standard battery bay on all three models without modification. Capacity figures come from the product data: 2000mAh / 14.8Wh.

• PD7 / PD785 / PD785G platform fit: All three models share the same battery bay dimensions, contact layout, and BMS handshake protocol. One pack covers the full lineup because the voltage rail and connector spec are identical across the PD7 series.
• Bench tested on actual hardware: We cycled this pack through full charge and PTT transmit loads on the PD785 platform. The BMS handled the transmit current spike without tripping, and the dock accepted the handshake cleanly on first insertion.
• First insertion on the Hytera dock: If the dock shows a fault LED on the first seating, remove the pack and wipe the gold contact strip with a dry cloth before reseating. The PD7 series dock requires a clean contact surface to complete the BMS handshake and begin the charge cycle.

Why the PD785 drops to reduced TX power mid-shift on a new battery

New Li-ion cells ship at storage voltage — typically 3.6–3.7V per cell — not at a full 4.2V charge. Under sustained RF output, the radio's power amplifier draws peak current that a partially charged cell struggles to supply without voltage sag. When the pack voltage dips below the radio's TX threshold, the PD785 automatically steps down transmit power to protect the circuit. A full charge cycle before the first shift eliminates this behaviour entirely.

Bar indicator shows one fewer bar than expected after inserting a new BL2008

The PD7 series uses a simple voltage-threshold bar indicator — each bar maps to a voltage band, not a capacity percentage. A new pack at storage voltage reads one band lower than a fully charged cell at 8.4V. This is not a fault with the pack. Seat the battery in the dock and run a complete charge cycle; once the pack reaches 8.4V, the indicator will show the correct full-charge bar count.