After covering the cost of power drawn from the grid at later times you receive credit that may be applied to future bills within the same 12 month billing cycle. (solar-estimate.org)
The main features are its incredibly low power draw and ability to be read even under direct sunlight. (news.softpedia.com)
Could this slowly kill my battery after a few days or is that a normal power draw for a car that isn't running? (mechanics.stackexchange.com)