Many motorsport ECUs are fitted with an internal battery that is not rechargeable. Depending on the ECU, these typically need changing every 1-3 years. Many are also soldered to the electronic circuit board and old batteries need to be de-soldered and new ones soldered back in. There is a limited number of times this can be done before the electronic circuit board becomes damaged. The battery change also involves returning the ECU somewhere for the work to be done, the shipping carrying its own risk of loss.
Depending on the ECU, it’s functions will be reduced when the battery is not present, such as, but not limited to:
OLDtronics have built a small box, in a similar style to an ECU that contains the battery. The ECU needs to be adapted to have a flying lead bringing out the battery connections. The battery is of a larger capacity than is typically fitted inside the ECU, therefore should last between 5-10 years.
Cautionary note: There are electrolytic capacitors fitted to all TAG/McLaren Electronics’ ECUs. These have a limited life, after which they can start to leak and cause damage to the PCBs, in some cases irreversible. McLaren Applied recommend replacing these capacitors every 10 years. OLDtronics does not have the facilities to do this, only McLaren Applied can do this.
The OLDtronics Monitor has been designed as a replacement for the TAGtronic System Monitor (V5).
TAGtronic System Monitor was designed to work in the DOS operating system on particular laptops using PCMCIA cards that are no longer available.
The OLDtronics Monitor will run on the latest versions of Windows using a generic USB device to communicate to the ECU, the intention being to ‘future proof’ the system to enable these old TAGtronic ECU’s to be used long into the future.
A demo version can be downloaded from HERE:
After installing, select a demo configurations using the File/Open Demo menu: