Keep the shortlist small
Choose two or three US models. Compare capacity, continuous output and weight first, then read each record’s source and verification date.
Read the gaps
An unverified field is a research task, not a zero. Our staging AC180 record deliberately leaves weight blank because its source documents differ. Ask the manufacturer to resolve the exact variant before a final buying decision.
Go beyond the table
Before buying, review ports, recharge limits, dimensions, operating conditions, warranty and return terms at the manufacturer and merchant. These details are outside the initial comparison table. We have not hands-on tested the catalog products.