Toshiba GSC-BT6 Replacement Battery 7.4V 1050mAh Li-ion

Toshiba Gigashot GSC-K80H / GSC-A100F Series — 7.4V Li-ion Replacement Battery (GSC-BT6)

This is a 7.4V, 1050mAh Li-ion replacement for the Toshiba GSC-BT6 battery. It fits the Gigashot GSC-K80H, GSC-K40H, GSC-A40F, and GSC-A100F compact digital video cameras. Swap it in when the original cell no longer holds a usable charge.

• GSC-K and GSC-A series compatibility: Both the K-series and A-series Gigashot camcorders share the same 7.4V two-cell Li-ion pack format, connector pinout, and BMS handshake. One battery works across all four models listed without modification.
• Bench tested on actual hardware: We ran this cell through the GSC-K80H body, monitoring BMS communication during charge and discharge. The protection circuit tripped correctly at the low-voltage cutoff and accepted full charge without error flags.
• First charge via camcorder body: Charge this battery inside the Gigashot body before using an external charger. Some Toshiba Gigashot BMS units require one in-body charge cycle to calibrate the battery-remaining indicator to a new cell's discharge curve.

Gigashot battery indicator stuck at full — then drops to zero without warning

The Gigashot series maps battery percentage to a fixed voltage-threshold table stored in firmware. A new Li-ion cell has a slightly different discharge curve than the degraded OEM cell the camera last calibrated against. The indicator reads the open-circuit voltage and reports full, then jumps to empty as the cell voltage crosses the threshold the camera expects at a lower state of charge. One full charge and discharge cycle through the camera body resets the mapping and brings the indicator back in line with actual capacity.

Camera displaying "no battery" with a fully charged replacement installed

This happens when the BMS in the camera body has not yet authenticated the new cell. On first install, some Gigashot units reject an unrecognised pack and display a no-battery warning rather than a low-battery warning — the distinction matters for diagnosis. Remove the battery, reinsert it firmly until the latch clicks, then power on. If the warning persists, place the battery in the camera and connect to the mains charger; after the charge LED activates, the body completes its handshake and the warning clears. Check that contact voltage on the battery terminals reads at least 7.2V before retrying.