Quick rules for flying with solar charger in carry-on and checked baggage. Verdicts and conditions across the major aviation regions below.
Solar panels themselves: allowed in both. Any attached lithium battery follows the spare-battery rule (carry-on only, ≤100 Wh).
Solar panel OK in either bag. Built-in lithium storage in carry-on only per ICAO; < 100 Wh standard, 100–160 Wh with approval.
Solar panel OK in either bag. Lithium battery storage in carry-on only.
Solar panel OK in either bag. Lithium storage carry-on only per ICAO.
Solar panel itself fine in either bag. Built-in lithium battery storage must follow ICAO rules: < 100 Wh in carry-on only, never in checked. China CAAC: capacity label required on the battery casing.
Solar panel OK in either bag. Lithium battery storage in carry-on only per ICAO. No additional Australia / NZ restriction.