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How to Choose a Portable Power Station

August 11, 2025
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1. 

Know Your Core Needs

 • Purpose: Camping, emergency backup, RV life, or off-grid work?

 • Devices & Wattage: List every gadget you’ll run (laptop, CPAP, fridge, power tools) and note its rated watts. Add 20 % headroom.

 • Runtime: Calculate Wh = Watts × Hours. Example: 60 W mini-fridge × 8 h = 480 Wh.

2. 

Battery Chemistry

 • LiFePO₄ (LFP): 3,000–5,000 cycles, safer, heavier.

 • NMC: Lighter, 800–1,000 cycles, higher energy density.

 • LiFePO₄ is now the default for long-term use; choose NMC only for ultra-light travel kits.

3. 

Capacity & Output

 • Capacity: Look for usable Wh (not raw Wh). 500 Wh ≈ 1–2 days of light camping; 1 kWh+ for multi-day or home backup.

 • Continuous AC Output: Match or exceed your highest single device. 300 W for laptops, 1,000–2,000 W for power tools.

 • Surge Rating: Inductive loads (fridges, drills) need 2–3× surge headroom.

4. 

Ports & Charging Speed

 • Ports: 3–6 AC outlets, USB-C PD 60–140 W, 12 V car socket, Anderson/DC barrel for solar.

 • Recharge Time: 0–80 % in <1 h via 600–1,000 W wall charger is now mainstream.

 • Solar Input: ≥200 W MPPT lets you refill 500–1,000 Wh units in 3–5 h of good sun.

5. 

Weight vs. Mobility

 • <5 kg: pocket-size 100–300 Wh packs for day trips.

 • 5–15 kg: 500–1,000 Wh “handle & wheels” units—sweet spot for most users.

 • >15 kg: 1.5 kWh+ units with trolley; consider split-battery designs if stairs are an issue.

6. 

Safety & Certification

 • Verify UL 2743, CE, FCC, UN38.3 for cells.

 • Look for temperature-tolerant BMS (-10 °C to 45 °C operating range).

 • Fire-retardant (V-0) casing and overload/short-circuit protection are non-negotiable.

7. 

Smart Features & Ecosystem

 • App Control: Real-time SOC, temp, remote on/off.

 • Modular Expansion: Some brands (EcoFlow DELTA 2, Anker 767) accept extra battery packs.

 • UPS Mode: <20 ms switchover for PCs or medical devices.



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