JVC GR-D240 Replacement Battery BN-VF707 7.4V 700mAh Li-ion

JVC GR-D240 / GR-D246 Series — 7.4V Li-ion Replacement Battery (BN-VF707)

This is a 7.4V, 700mAh Li-ion cell built to the BN-VF707 spec. It fits the JVC GR-D240, GR-D246, GR-D247, GR-D250, and over 30 additional GR-series MiniDV camcorders that share the same battery bay and connector. Capacity is rated at 5.18Wh — matching the original BN-VF707U and BN-VF707US cells.

• GR-D240 and GR-D246 series compatibility: These models share a common 7.4V battery rail, the same physical latch mechanism, and the same BMS handshake protocol. One battery part number covers the full family because JVC used a unified power interface across this MiniDV lineup.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a GR-series body. The BMS accepted the cell without fault codes, held the voltage rail stable during tape transport, and cut off cleanly at the low-voltage threshold — no forced shutdowns mid-recording.
• First charge on GR-series bodies: Insert this battery and charge it fully through the camera body or JVC AC adapter before your first recording session. Some GR-series bodies recalibrate the battery-remaining indicator during that initial in-body charge cycle — skipping it can cause the indicator to read inaccurately from the start.

Why the GR-D240 shows a dead-battery icon on a freshly charged replacement cell

The GR-D240 maps its battery-level indicator to a voltage-threshold table stored in the camera body. A new Li-ion cell has a slightly different discharge curve than an aged original, so the body can misread state-of-charge on first use. This shows up as a full-charge indicator that drops suddenly to one bar, or a dead-battery warning on a cell that is actually at 7.2V or above. Run one complete charge cycle through the camera body or an OEM JVC charger. After that cycle, the indicator typically tracks the new cell accurately.

Battery percentage jumping around erratically during playback

Playback mode on the GR-D240 draws current in bursts — tape motor, LCD backlight, and audio output all pull at different intervals. If the cell's internal resistance is elevated — either on a new uncalibrated cell or a worn one — voltage dips during those bursts cause the indicator to swing between levels. On a new replacement, this usually stabilises after one or two full charge-discharge cycles. If it persists beyond that, check resting voltage with a multimeter: a healthy cell at full charge should read between 8.3V and 8.4V at rest.