An unheated garage in January is a freezer with a remote opener. LFP chemistry can sit cold better than it can charge cold. Manuals are stricter than Facebook groups.
| SKU | Charge temp (mfr.) | Discharge temp (mfr.) | Storage temp (mfr.) |
|---|---|---|---|
| Jackery Explorer 2000 v2 / 1000 v2 | 0–45°C | −10–45°C | Not fully tabulated on the PDP we used — see manual |
| EcoFlow RIVER 2 Pro | 32–113°F | 14–113°F | 14–113°F (68–86°F best) |
| BLUETTI AC180 | 0–40°C | −20–40°C (1500 W max 30–40°C) | −20–40°C (UK table) |
| EcoFlow DELTA 3 | Unknown on US PDP fetched | Unknown on US PDP fetched | See manual |
State of charge while it sits
BLUETTI’s AC180 copy says recharge to 80% every 3–6 months (shelf-life line). Jackery 2000 v2 markets ~95% charge retention after 12 months. Those are manufacturer storage slogans. A garage that swings −20°C to +15°C is not a laboratory shelf. Check the pack every couple of months; do not invent a calendar for a chemistry you cannot see.
Condensation
Bring a cold pack into a warm kitchen and water condenses on electronics. Give it time in the box before you plug AC into it. This is not a spec number. It is how water works.
What we will not tell you to do
We will not tell you to disable a BMS low-temperature charge lock. We will not publish heater-pad wiring diagrams. Jackery’s Extreme Guard bag is a commercial accessory with its own ratings if you want a supported heater.
Sources
Jackery 2000 v2 spec block; EcoFlow RIVER 2 Pro US spec block; BLUETTI AC180 UK spec table (storage −20–40°C, shelf-life 3–6 months). Checked 9 September 2026.