• What's the recommended no of external battery packs to take assuming I'll be sleeping inside every second night? The one I have is a Anker Powercore 20100. They say it will charge an S9 5 times but not sure it really will. Igaro is great for charging the Garmin whilst on the move but not so good for phone charging.

  • I think that'd be enough. The only thing you might want to consider is having a second very small battery pack in case your main one fails.

    If you have your charger at the ready for everytime you stop you should be fine

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