Travelling with batteries has never been more difficult, however there are a number of things you can do to prepare and make the process much smoother.
Know your battery specs/construction/manufacturer
Check the IATA document for guidelines on shipping
Contact your airline or freight forwarder for advice
Organise all your paperwork
Print off or keep documentation handy for when travelling through the airport
Make it professional by ensuring all your labelling, packaging and documentation is in order before sending/travelling with the batteries
Have a plan B by shipping batteries ahead of time as cargo, or possibly sourcing batteries locally