Can front terminal batteries be transported by air?

For Valen’s VRLA front terminal ranges, ENDUROGEL, ENVIROX-CEL, ENVIROX-CELPLUS and TOPIN, yes. The electrolyte is immobilised, the batteries are classified non-spillable and approved for air transport under IATA packing instructions, subject to correct packaging, marking and terminal protection. This matters more than it sounds for remote-site work, where the difference between air freight and road freight can be a week and a shutdown window.

For ENLiFEN lithium products the position is different and stricter. Lithium batteries are dangerous goods for air transport, classified UN 3480 or UN 3481, Class 9, and every cell or battery must be of a type proved to meet the tests in the UN Manual of Tests and Criteria, Part III, sub-section 38.3 before it can be transported.

Raise this early on any lithium project at a remote site: a failed or end-of-life lithium battery is a harder logistics problem than a working one. Damaged or defective units must be marked “DAMAGED/DEFECTIVE LITHIUM-ION BATTERIES” and packed to specific packing instructions. Batteries for disposal or recycling carry their own marking and packaging requirements. Different packaging, different marking, potentially a different carrier. Lead-acid has no equivalent burden. If you are specifying lithium for a site three hours from a highway, plan the removal at the same time as the installation.