Question

he FAA restricts how much lithium to carry on an airplane. The rule-of-thumb is a battery has 0.3 g of lithium per Ampere-hour (Ah). A laptop battery is rated as 5 Ah per cell and contains 4 cells. Find the lithium content in grams. (compare with the FAA limit of 8 grams)

Answer 1

The right answer is "6 gm".

Step-by-step explanation:

Given:

Amount of Li,

= 0.3 gm

Battery rated,

= 5 Ah per cell

Total number of cells,

= 4

The total power limit will be:

=
`5* 4`

=
`20 \ Ah`

hence,

The amount of Li in battery will be:

=
`(0.3)* 20`

=
`6 \ gm`

(Allowed for transportation).