Blog · Gear · July 10, 2026

Winter Go-Kit Power — Batteries That Actually Work in the Cold

Cold reduces lithium capacity — the label mAh on the battery is not what you get at 20°F in a go-bag.

What to test

Run battery runtime at your real field load (radio + phone + light).
Keep spare Li-ion warm inside your jacket; SLA/AGM for base backup tolerates cold better.
Size solar and charging with the field power bundle — solar sizing and system sizer.

Pack power planning beside the go-kit checklist so dead batteries do not end a deployment quietly.

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Cold-weather field ops need sized batteries and fused distribution.