Garmin Instinct 3 Solar 45mm vs Nitecore Carbon Battery 6k
Weight and specs compared for 2026 — and which one to choose.
Rugged solar-powered GPS watch. 36-90 days smartwatch battery with solar charging capability.
Full details →Upgraded power bank from NB Air 5k with higher IPX8 rating and increased capacity.
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Garmin Instinct 3 Solar 45mm vs Nitecore Carbon Battery 6k: which should you buy?
If saving weight is your priority, the Garmin Instinct 3 Solar 45mm wins — at 53 g it is 35 g (40%) lighter than the Nitecore Carbon Battery 6k (88 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest electronics page, or browse the full gear weight database.