Tiger Sport 14 Electrical Behaviour
Starting a new thread on this, as I think it might run on a bit ...
These notes are for a 2014 Triumph Tiger Sport, which seems to have a penchant for eating batteries, and leaving them flat when needed for starting. Tests were carried out on a 1 week old Exide YTZ14S-BS (230 CCA), and so far working fine.
I have noted what seems to be a heavy current draw when you connect the battery after leaving it disconnected for a while - a distinct spark when connecting the second terminal (not yet been able to test the exact current draw here).
The bike has the official Triumph Datatool alarm, which does have a significant current draw (enought to recommend a trickle charger if the bike is stood for some time), but I don't think sufficient to cause my problem.
Current draw tests
Battery state at start of tests - 13.2 V, showing fully charged. An ammeter connected in series with the battery -ve terminal. Operate alarm remote key
Switch on ignition
- 2.6A current draw for 1 second, as alarm deactivates.
Switch off ignition
- 10.8A current draw, dropping to 8.5A when fuel pump relay opens (fuel line up to pressure), then stays at 8.5A.
- Pulling the headlamp relay drops this to 1.6A - meaning the draw from the headlamp circuit is around 7A !
- 500mA current draw until alarm activates, then 300mA for a full minute, until fuel pump relay deactivates (need to double-check this, as it might the EMS relay as well).
Steady state (ignition switch off)
- 4.2mA current draw - which I guess is the alarm.
My Optimate battery charger is showing the battery is taking a 590 mA continuous current charge when disconnected from the bike, even though it is shown as fully charged - 13.7V. I'm not too sure if this isn't a bit high for a brand-new battery. Later - now up 14.2V and 150mA.
Note. Cannot test current draw on starting, as I don't have a really heavy-duty ammeter.
I'll do some comparative tests on an old Yuasa YTX14-BS later - but this is and old one I replaced a year ago. Conclusions so far
I'd like to get to the bottom of this, but I think an immediate result might be to wire in a switch to the headlamp circuit or some kind of time delay, so that this 7A current draw doesn't come in until after the bike has started.