"Watt-hour rating, expressed in Watt-hours, is calculated by multiplying a cell's or battery's rated capacity, in ampere-hours, by its nominal voltage. ".

348 Batteries manufactured after 31 December 2011 shall be marked with the Watt-hour rating on the outside case.

Energy consumption is the consumption reduced and measured in watt-hours with reference to an approved baseline.

Lithium ion batteries subject to this provision shall be marked with the Watt-hour rating on the outside case;".

(b) For rechargeable cells and batteries, a change in Watt-hours of more than 20% or an increase in voltage of more than 20%; or

In (a), replace "lithium equivalent content is not more than 1.5 g" with "Watt-hour rating is not more than 20 Wh".

In (b), replace "aggregate lithium-equivalent content is not more than 8 g;" with "Watt-hour rating is not more than 100 Wh.

We get about 1,500 watts an hour out of one of these.

In the definition of Large battery, insert the following phrase at the end ", or in the case of a lithium ion battery, means a battery with a Watt-hour rating of more than 6200 Wh.

In the definition of Large cell, insert the following phrase at the end ", or in the case of a lithium ion cell, means a cell with a Watt-hour rating of more than 150 Wh. ".