The regulations state that a device “containing lithium metal or lithium-ion cells or batteries the primary purpose of which is to provide power to another device must be carried as spare batteries”. Installed or spare – The rules reference “batteries installed in devices” and “spare batteries” and it is important to be aware of the difference. example 2: a 12 volt 50 Ah battery – 50 Ah x 12 volts = 600Wh.You can now calculate as – 4.4Ah x 11.1 volts = 48.8Wh example 1: an 11.1 volt 4,400 mAh battery – first divide the mAh rating by 1,000 to get the Ah rating – 4,400/1,000 – 4.4ah.If not, you can calculate it as Volts x ampere hour (Ah). Watt Hour (Wh) limits – This is usually stated on the battery itself.So a 2Ah battery has 0.6 grams of lithium (2 x 0.3) and a typical laptop battery pack with eight 2Ah cells has 4.8 grams ( 8 units x (0.3 x 2Ah)) The amount of lithium (or lithium equivalent) content in a battery or battery pack – this can be worked out as 0.3 x amp hour capacity. ![]() If you are shipping lithium batteries please see shipping lithium batteries.Īir travel restrictions revolve around: A Lithium-ion battery showing Watt-hour (Wh) rating on the case Note, this article explains the restrictions on an individual person when traveling by air with lithium metal batteries (disposable) and lithium-ion batteries and battery packs (rechargeable). In reality, most lithium based batteries now come with built in safety systems to avoid these dangers, but the rules in place by the US Federal Aviation Administration remain. These are laid out in the regulation 49 CFR 175.10(a)(18). Most notably, this battery type has been known to spontaneously overheat and catch fire, which has understandably lead to the introduction of restrictions by airlines and transport companies. Lithium is a relatively new technology and there are concerns about its stability.
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