IDX BP-65H Replacement Battery 14.4V 10400mAh Li-ion

IDX BP-65H / E-80 / E-80S — 14.4V Li-ion Replacement Battery

This is a 14.4V, 10400mAh (149.76Wh) Li-ion cell built to replace the IDX BP-65H, E-80, and E-80S batteries used in professional broadcast cameras and cinema rigs. It fits production setups where the original IDX battery mounts — V-mount or proprietary IDX cradle systems that accept this cell family. Voltage and form factor match the OEM spec exactly.

• BP-65H, E-80, and E-80S compatibility: These three OEM part numbers share the same 14.4V nominal voltage rail, physical footprint, and connector pinout. A single replacement cell covers all three because IDX kept the BMS communication protocol consistent across this battery family — swapping between these designations on the same rig is standard in broadcast workflows.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a V-mount compatible rig, monitoring BMS handshake, cutoff thresholds, and cell balancing under sustained draw. The protection circuit triggered correctly at low-voltage cutoff and did not trip under normal camera load.
• First-cycle BMS initialisation on broadcast rigs: Before heavy shooting, run one complete charge through your IDX-compatible charger — not a generic V-mount charger — to allow the BMS to calibrate its state-of-charge reference. Some IDX-compatible monitors and camera bodies will display inaccurate battery percentage until this initial cycle completes.

Why battery percentage reads incorrectly on IDX-compatible monitors after fitting a new cell

IDX battery monitors and on-board displays map percentage to a voltage-threshold curve stored in the BMS. A new cell's discharge curve sits slightly outside the learned range from a depleted OEM battery, so the monitor can read 100% immediately after install — then drop sharply. This is a calibration mismatch, not a cell fault. Running one full charge-to-discharge cycle through an IDX-rated charger resets the reference points. After that cycle, percentage readout stabilises and tracks normally across the discharge curve.

Camera or monitor reporting "no battery" on a fully charged replacement cell

Some IDX-compatible devices perform a BMS authentication check on first contact with a new cell and reject it before any draw occurs. This is not a dead cell — it is the device's protection circuit failing to recognise an unconditioned BMS state. Power-cycle the camera or monitor with the battery seated, then place the cell in an IDX-rated charger until the charge LED confirms full charge. Re-insert the charged cell; the device should clear the rejection flag and accept it at that point, typically once cell voltage reaches 16.4V at full charge.