Most important first
Top 10 Terms You Need to Know
Wh (Watt-hour) Capacity
The single most important number on a power station. Tells you how much total energy the battery can store. More Wh = longer runtime.
Example: A 1,000Wh station runs a 100W device for 10 hours.
Use the Power Calculator to size your system →
LFP / LiFePO₄ Chemistry
The safest, longest-lasting lithium battery chemistry. Rated for 3,000-6,000 cycles. No thermal runaway risk. Standard on all quality 2026 stations.
Example: All Big 4 brands now use LFP in their flagship models.
Full LiFePO₄ science guide →
Watt (W) Power
Measures power at a single moment. Your station's wattage rating tells you how much it can deliver at once.
Example: A 2,000W station can run a 1,500W space heater plus 500W of other devices simultaneously.
Pure Sine Wave Inverter
Highest quality AC output, identical to grid power. Safe for all electronics. All quality stations use pure sine wave — avoid modified sine wave.
Example: Cheap "modified sine wave" inverters can damage CPAP machines and sensitive electronics.
Cycle Life Battery
Number of full charge-discharge cycles before capacity drops to 80%. LFP: 3,000-6,000 cycles. NMC: 500-800 cycles.
Example: A 3,000-cycle station charged daily will last over 8 years before noticeable degradation.
NMC vs LFP full comparison →
BMS (Battery Management System) Safety
The electronic brain that monitors temperature, voltage, and current. Protects against overcharging, over-discharging, and thermal issues.
Example: When your station won't charge on a freezing morning — that's the BMS protecting the battery from permanent damage.
MPPT (Maximum Power Point Tracking) Solar
A smart charge controller that extracts maximum power from solar panels regardless of clouds, angle, or temperature. Harvests 10-30% more than PWM.
Example: MPPT is why two identical panels can produce different results on the same day.
Full solar charging guide →
Pass-Through Charging Feature
Run devices from the station while simultaneously charging the station from wall or solar. Critical for continuous operation.
Example: Run your refrigerator while charging from solar — the fridge never loses power.
Surge Wattage Spec
Maximum power a station can deliver for a few seconds. Important for appliances with motors (fridges, well pumps, tools).
Example: A fridge running at 150W may need 600W to start the compressor. Your station must handle the surge.
Getting started
How to Use This Glossary
Portable power shopping can feel overwhelming. There are dozens of acronyms and technical terms. Here's how to approach it:
Step 1: Learn the Big Three
Wh (watt-hours), W (watts), and cycle life. These three numbers tell you 90% of what you need to know. A station with enough Wh and enough W that lasts long enough will work for you.
Step 2: Understand Your Use Case
Medical backup needs UPS. Van life needs alternator charging. Home backup needs pass-through. Once you know your use case, the relevant terms become clear.
Step 3: Ignore Marketing Jargon
Terms like "solar generator," "ultra-fast," and "revolutionary" don't mean anything. Focus on the specs we define here.
