You can get through a 600k without taking either, but I pack for likelihood of event completion not weight savings.
Sure, it's not about weight saving though, it's simplifying by eliminating a task, which saves time and means one less thing to think about.
I'd rather take an extra battery than a charger, even though it will weigh more, it will be quicker to use if I need it, and much more flexible
@frank9755 started
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You can get through a 600k without taking either, but I pack for likelihood of event completion not weight savings.