a maximum of one spare battery not exceeding 300 Wh or two spares not exceeding 160 Wh each may be carried. The battery must not have a voltage greater than 12 volts and a Watt-hour rating of not greater than 100 Wh. Spare batteries for electronic smoking devices, (e.g. e-cigarettes, e-cigs, e-cigars, e-pipes, personal vaporizers, electronic nicotine delivery systems. Portable electronic devices (including medical devices) containing lithium metal or lithium ion cells or batteries (articles containing lithium metal or lithium cells or batteries, the primary purpose of which is to provide power to another device must be carried as spare batteries). For use by passengers whose mobility is restricted by either a disability, their health or age, or a temporary mobility problem (e.g. broken leg), where possible, the mobility aid must be loaded, stowed, secured and unloaded always in an upright position.

Radioisotope cardiac pacemakers or other medical devices, including those powered by lithium batteries If you are likely to exceed your hand luggage allowance by carrying medication or medical equipment, you should let your airline know in advance. You may need to provide a doctor's letter to support this.

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The term "lithium battery" refers to a family of batteries with different chemistries, comprising of many types of cathodes and electrolytes. They are separated into:

The total net quantity of medicines, toiletry articles and aerosols for sporting or home use must not exceed 2 kg or 2 L (e.g. four aerosol cans of 500 mL each). the battery must be protected from damage (e.g. by placing each battery in a protective pouch); and Portable medical electronic devices containing lithium metal cells or batteries not exceeding 2 grams or lithium-ion cells or batteries not exceeding 100 Wh , such as Automated External Defibrillators (AED), Nebulizer, Continuous Positive Airway Pressure (CPAP), etc. carried by passengers for medical use. Note: a 'Zippo' lighter that is fully absorbed in wadding i.e. an absorbed liquid lighter can be carried by passengers.All brands were awarded at least three stars in individual categories too - with most gaining four or more - a testament to how robust and manoeuvrable they are. For use by passengers whose mobility is restricted by either a disability, their health or age, or a temporary mobility problem (e.g. broken leg). Release valves on aerosols must be protected by a cap or other suitable means to prevent inadvertent release of the contents. A truly one-of-a-kind adventure duffel that will swallow gear and easily carry it to some far off corner of the globe — one of our absolute favorites

Non-spillable batteries are also known as wet filled with acid or alkali or gel-type batteries. Batteries (carried as spares)Premixing burner lighter without a means of protection against unintentional activation is forbidden. Bear in mind that if the stove is used during your travels, you may not carry it on any subsequent flights - see above. The watt-hour (Wh) rating is a measure by which lithium ion batteries are regulated. Since 2009 and 2011 respectively, manufacturers have been required to mark lithium ion batteries with the watt-hour rating.