Python 7756P Remote Start Compatible Battery 3.7V 85mAh

Python 7756P — 3.7V Li-Polymer Replacement Battery

This 3.7V, 85mAh Li-Polymer battery fits the Python 7756P remote start and keyless entry transmitter. It restores wireless operation — remote vehicle starting, door locking, and unlocking — when the original cell has depleted. At 21.50 x 20.25 x 3.56mm, it fits the transmitter housing without modification.

• Python 7756P transmitter fit: The 7756P uses a slim Li-Polymer cell at this exact voltage and footprint. Dropping to a lower-capacity cell or mismatched voltage causes the transmitter to under-perform or fail to power up at all.
• Bench tested on actual hardware: We confirmed cell output at 3.7V nominal, checked the protection circuit response to over-discharge, and verified stable voltage delivery through repeated button-press cycles simulating active remote use.
• Re-sync after swap: Any power interruption to the Python 7756P remote triggers a loss of the rolling code link. After installing this battery, run the full programming sequence with the vehicle's control module — typically standing within range and following the button sequence in the Python installation manual for your system.

Remote start not activating after battery swap

Replacing the transmitter battery breaks power to the remote's memory, which clears the paired rolling code. The Python control module stops accepting commands from an unpaired remote as a security measure — this is expected behaviour, not a fault with the battery. You need to re-enter programming mode on the control module and re-pair the transmitter before remote start will respond. Check your Python 7756P system documentation for the exact button sequence, as it varies by firmware version.

Transmitter range noticeably short right after install

A new Li-Polymer cell ships at storage voltage — typically 3.6V to 3.65V — not at a full 3.7V charge. At storage voltage, RF output from the transmitter circuit is slightly reduced, which shortens effective range. This is not a defective cell. After a full charge cycle via the vehicle's paired charging path or a compatible charger, output stabilises at 3.7V and range returns to normal.