Can I Take Batteries On The Airplane. Spare uninstalled lithium ion and lithium metal batteries including power banks and cell phone battery charging cases must be carried in carry-on baggage only. If you have to travel with a larger spare battery for your wheelchair however you can discuss this with the flight crew and aircraft operators to ensure that the battery.
For lithium-ion batteries a maximum of 2 not exceeding 160 Wh each are allowed in carry-on bag with airline approval. Generally you can take lithium batteries on a plane if fitted in its device in either your hand luggage or your checked bags but you can only take spare lithium batteries in your carry on bags. This page provides tips for travelling with batteries including how to properly pack spare batteries.
As for bolts and nuts you might be able to carry them on given that they are not sharp and are not listed on the TSAs website as a prohibited item.
Passengers can carry most consumer-type batteries and portable battery-powered electronic devices for their own personal use in carry-on baggage. If the battery is installed in a device it can be carried in either checked or carry-on baggage. Its only uninstalled batteries that are prohibited. Battery-powered devices must be protected from accidental activation and heat generation.
