My apologies!
First, eShift reserve power cannot be adjusted, it is what it is. I'm not sure the exact amount of energy set aside, just that it's good for (50-100) shifts.
Moving on to lights...
I'm not entirely clear on your question: "Simple answer... can I leave the lights alone at full power always on, just as the factory setting?" I'll throw some more info your way, and if this doesn't not answer it, we'll keep at it!
Unrelated to reserve power: The lights will of course consume energy during normal use. The amount of energy consumed depends on the current draw/ specs from the lights. During normal use, this consumption is not adjustable. You can replace your light with a different light that uses less energy, but that is it. The more energy your lights consume during usage, the faster your battery drains. This has no bearing on the reserve power, but does affect how quickly you get to the reserve power.
For reserve power (after the Drive Unit cuts-off due to low battery): The DU will save enough energy for 2 hours of light operation at the wattage you select (3W to 18W, selected by Dealer.)
I feel like this is still somewhat complicated, so I'll try to give some examples.
For the sake of the example, we'll pretend that your front/rear light combined require 10 watts for normal operation. If you keep them on all the time, they will use 10 Wh every hour. If you ran your lights for 4 hours while riding, you would have
theoretically consumed 40 Wh of your battery.
10w * 4hrs = 40 Watt Hours
Regardless of what your reserve power is set at, the above would
theoretically be true.
If you did you entire ride without your lights turned on, they would consume:
0w * infinite hrs = 0 Watt hours
Once your battery gets low enough for DU cut-off, we start looking at the "
2 hour reserve light power mode." During this mode, your lights will not necessarily have the 10 watts they "want," but will instead have the amount selected between 3w and 18w. If you wanted your lights to have the same brightness during reserve as they do during normal operation, you'd have your dealer set the value to "10w" in the Bosch Software.
The amount of light power reserve would be:
10w * 2hrs = 20 Watt Hours
If you wanted to maximize range, and didn't care about brightness during the reserve period, you might have the dealer select 3 watts.
The amount of light power reserve would be:
3w * 2 hrs = 6 Watt Hours
For the sake of further explanation, if you had your dealer set the reserve power to 18 watts, your lights would still only operate at 10 watts, but we'd "waste" all this extra saved energy.
18w * 2 hrs = 36 Watt Hours
Looking at the total demands on your battery capacity, we can think of it this way:
- Energy consumed by normal riding: DU assistance, lights, eShift, and smaller functions (DU processor, sensors, display charging, etc.)
- Energy saved for 2 hour light power reserve (0 - 36 Wh)
- Energy saved for (50-100) eShifts (unknown)
Does this help, or did I make it worse?
