Even the simple act of replacingbatteries in the TV remote control or mouse on the computer, or changing a light bulb can be impossible and incredibly frustrating for them.
We found accessing the compartment for the battery and memory card a pain, as it doesn't auto-lock when you close it, requiring an unnecessary bit of finger adroitness, and removing and replacingbatteries can also be a fiddly affair.
For aircrafts to return to flight, the will have to install the containment and venting systems for both the main and the auxiliary batteries, along with replacing the batteries and their chargers.