Keeping GPS and headlamp batteries warm in sub-zero temps
Mastering the discipline of keeping GPS and headlamp batteries warm in sub-zero temps is not optional — it is a survival imperative. When temperatures plummet below freezing, the electrochemical reactions that power your devices slow dramatically, causing sudden, unpredictable failures at the worst possible moments. As a Wilderness First Responder (WFR)-certified survivalist with years of … Read more