From what I have read is they are not good cold weather carnkers...The best set up would be a cut off for the head light and a carb. bike. That way the only electrical requirement is starting..and if it is well tuned it should fire in one or two cranks...after that you are running on the charging system. There may be a problem if you are at idle for long periods of time, usually, the charging system is not producing enough power so some comes from the battery. Above idle the system is producing more power (assuming standard load) than needed go some goes to the battery to recharge it the rest is wasted to heat.
