Hytera TC-700 Replacement Battery BL-2608 7.4V 1600mAh

Hytera TC-700 Series — 7.4V Li-ion Replacement Battery (BL-2608)

This is a 7.4V, 1600mAh Li-ion replacement battery for the Hytera TC-700, TC-700U, TC-780, TC-780M, and TC-710 two-way radios. It uses OEM part number BL-2608 and slots directly into the battery bay on these portable transceivers. The 11.84Wh cell chemistry matches the original pack specification for this platform.

• TC-700 series compatibility: The TC-700, TC-700U, TC-780, TC-780M, and TC-710 share the same 7.4V battery rail, BL-2608 connector footprint, and BMS handshake protocol — one pack fits the entire lineup without modification.
• Bench tested on actual hardware: We ran this pack through full charge and transmit-load cycles on a TC-700 unit. The BMS accepted the charger handshake without fault and held voltage above the radio's low-battery threshold under sustained PTT load.
• Contact strip insertion on first use: Before seating the pack in the charger dock for the first time, wipe the gold contact strip with a dry cloth. The Hytera TC-700 dock requires a clean contact surface to complete the BMS handshake — a residue-covered strip can trigger a fault LED that won't clear until the contacts are cleaned and the pack reseated.

Why the TC-700 cuts out mid-transmission on a new BL-2608 pack

A new Li-ion cell ships at storage voltage — typically 3.6–3.7V per cell, not full charge. When the TC-700 draws transmit current from a pack at storage voltage, the BMS can read that load-induced voltage sag as a low-cell condition and cut the output. This is a BMS protection trip, not a faulty battery. Fully charge the pack before first field use and the cutout behaviour will not repeat.

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

The TC-700 uses a voltage-threshold bar indicator — each bar corresponds to a voltage window, not a calculated percentage. A new pack fresh from storage sits below the top threshold, so the radio displays one bar short of full even though the cell is not depleted. Put the pack through one full charge cycle in the dock until the charger LED goes green. After that first charge, the indicator will read correctly against the cell's actual voltage.