SportDog SAC00-14727 Remote Launcher Replacement Battery 7.4V 700mAh

SportDog Remote Launcher Receiver — 7.4V Li-Polymer Replacement Battery (SAC00-14727)

This 7.4V 700mAh Li-Polymer battery replaces the OEM cell in the SportDog Remote Launcher Receiver. It fits the handheld remote transmitter unit used to fire remote launchers during dog training sessions. Voltage and capacity match the original SAC00-14727 specification exactly.

• Remote Launcher Receiver fit: The Remote Launcher Receiver runs a 7.4V two-cell Li-Polymer architecture to power the RF transmitter circuit and launcher trigger output. Any deviation in voltage causes the transmitter to under-drive or lock out. This cell matches the voltage rail and connector orientation of the original unit.
• Bench tested on actual hardware: We ran this cell through charge and trigger-fire cycles on the Remote Launcher Receiver. The BMS handled charge termination cleanly and the transmitter fired the launcher output without dropout at both full charge and low-state voltage.
• RF transmitter storage tip: If the remote sits unused between hunting seasons, discharge it to around 50% before storage. Li-Polymer cells stored at full charge for months degrade faster than those stored at mid-state — the SAC00-14727 form factor leaves little room for a swollen cell inside the housing.

Why the Remote Launcher Receiver stops firing after a partial charge

The Remote Launcher Receiver's trigger circuit draws a short burst of current each time it fires. At low charge states, internal resistance in an aged Li-Polymer cell causes voltage to sag below the transmitter's cutoff threshold during that burst — even if the charge indicator still shows bars. The BMS reads the sag as a fault and cuts output before the fire signal completes. A fresh cell with lower internal resistance holds the voltage rail steady through the trigger pulse.

Remote shows charged but launcher does not respond to trigger command

This symptom points to the transmitter losing RF output power before the charge LED drops — a classic sign of a cell with degraded capacity rather than a faulty remote. The RF stage is the highest current draw in the circuit and is the first function to brown out as capacity fades. Fit the replacement cell, power cycle the remote, and re-pair it to the receiver unit before the next test fire. After power interruption, always confirm the pairing link is re-established before assuming the transmitter is at fault.