— Electrical appliances can now be charged up to their full capacity when needed by up to the full battery capacity before needing to be plugged into a wall outlet, according to a study released Thursday by a leading research organization.
Electric appliances were once limited to a full battery charge in the U.S. when charging from a wall socket, but that requirement was lifted in 2011.
In 2015, the Federal Energy Regulatory Commission issued a guidance for manufacturers to enable up to a 70 percent charge-up time.
The new guidance was issued in the wake of the California Electric Vehicle Association filing a complaint with the FCC last month alleging that battery manufacturers have been using the battery technology to speed up charging times and charging times have been cut to 10 minutes in some cases.
While battery charging times are generally slow in the field, the FCC report said there are some exceptions to the rule.
The report also found that the majority of electric-vehicle charging times were achieved using “short-range charging.”
That means a car’s battery pack can be charged from a socket or wall outlet for about 20 minutes before it needs to be recharged.
A typical charging time is about 30 minutes, but some of the report’s findings indicated charging time could be even shorter if battery technology improves.
A 2017 study by the University of Maryland found charging time for a plug-in hybrid was 20 minutes, and an average electric-car battery can take up to 90 minutes to charge.
Another recent study from the National Renewable Energy Laboratory found charging times of 50 minutes were achieved in battery vehicles with electric motors.
But the researchers cautioned that battery charging time was only an approximation.
The FCC report noted that the battery is a complex device and manufacturers may not have been adequately educated about how to optimize battery technology.
It noted that many automakers are still using the standard lithium-ion batteries that can charge to full capacity in only a few minutes, which is “far from ideal for long-term battery life.”
The report recommended battery-powered vehicles be made available in a wider variety of price points, and the FCC recommended manufacturers include charging times in the vehicles specifications.
The agency also recommended the Federal Communications Commission establish standards for charging time and charging rates for electric-powered vehicle batteries.
A new standard, the AC Charging Time (ACT) standard, will be introduced in 2021.
The ACT standard would set charging times for battery-electric vehicles based on a range of charging speeds.
It also will require automakers to provide more detailed information about the charging times they use for battery charging.