In relation to lights/ dynamo I used an SP dynamo with the Luxos IQ, this system incorporates a cache battery, I would definitely recommend the use of a battery with a dynamo, this gives a back up in the event of any failure too. Have at least one Garmin that has the ability to run off disposable batteries- Lithium are brilliant BTW, double the life of the normal variety and worth the extra expense.
In relation to lights/ dynamo I used an SP dynamo with the Luxos IQ, this system incorporates a cache battery, I would definitely recommend the use of a battery with a dynamo, this gives a back up in the event of any failure too. Have at least one Garmin that has the ability to run off disposable batteries- Lithium are brilliant BTW, double the life of the normal variety and worth the extra expense.