Lift Truck Tips: California charges ahead

New California battery charging regulations could foretell industry-wide shift.

By ·

California, the birthplace of the Energy Star program, is again advancing energy efficiency following the state energy commission’s Jan. 12 approval of efficiency standards for battery chargers.

According to Kenro Okamoto, electric product planning specialist for Toyota Material Handling, the new regulations require big changes for some electric lift truck users in California. They might also forecast a nationwide model for efficient forklift battery charging.

“These new regulations are going to force electric lift truck end-users to change,” says Okamoto. “So much charging technology is not smart. There’s a lot of waste.”

The commission estimates the 170 million charging devices in California homes and businesses account for as much as two-thirds of the 8,000 gigawatts consumed in the state each year. Unlike industrial chargers, most chargers for personal electronics do not automatically switch off at the end of the charging cycle. The new regulations will change that, but personal electronics will not likely be the primary source of savings. After all, not many cell phones have been in use for 10 or more years.

By the time the regulations are fully phased in, they could save California an estimated $300 million in annual electricity costs. Any industrial chargers that do not meet the regulation’s requirements for power conversion, power required to charge, no-battery draw, and overall efficiency will have to go.

“The older ferro-resonant technology is still in use because it is so reliable,” Okamoto says. “Even though it is heavy and inefficient, it just hasn’t been a squeaky wheel.”

Users might convert to next generation ferro-resonant technology, which uses power switches to improve efficiency, but this technology is not sensitive to input voltage. Therefore its overall power conversion efficiency (the difference between AC power at the wall and DC power at the battery) might not comply with the new regulations.

The safest bet, says Okamoto, is “switch mode” technologies such as IGBT or MOFFET. These high-frequency technologies are smaller, quieter, and much more efficient thanks to intelligent switching systems. The efficiency of such systems is much greater, but the increased complexity can also lead to increased service costs, says Okamoto.

“You have precise control, which enables great efficiency,” he adds. “They can perform with a variety of line voltages, no heavy expensive transformers have to be used, and power output is very efficient.”

Read more Lift Truck Tips.


About the Author

Josh Bond, Contributing Editor
Josh Bond is Senior Editor for Modern, and was formerly Modern’s lift truck columnist and associate editor. He has a degree in Journalism from Keene State College and has studied business management at Franklin Pierce University.

Subscribe to Modern Materials Handling Magazine!

Subscribe today. It's FREE!
Find out what the world’s most innovative companies are doing to improve productivity in their plants and distribution centers.
Start your FREE subscription today!

Latest Whitepaper
Download the full 2016 Modern Materials Handling Salary Survey
How does your earning power match up with your peers across the material handling industry? Materials Handling salary survey, Warehouse manager salary survey, Warehouse Salary Research
Download Today!
From the November 2016 Issue
In Whirlpool Corp.’s Clyde, Ohio, factory, mobile robots have automated the delivery of parts to the line. The result is a more consistent, efficient and safer operation.
Optimizing home delivery: It takes more than planning
9th Annual Salary Survey: Success and Satisfaction Continue to Reign
View More From this Issue
Subscribe to Our Email Newsletter
Sign up today to receive our FREE, weekly email newsletter!
Latest Webcast
2016 Warehouse/DC Operations Webcast: Confronting omni-channel complexity
During this webcast we’ll examine the current activities, trends, and best practices in warehouse and DC operations management and how companies plan to address complex issues associate with omni-channel fulfillment.
Register Today!
EDITORS' PICKS
Systems Report: Whirpool puts mobile robots to work
In Whirlpool Corp.’s Clyde, Ohio, factory, mobile robots have automated the delivery of parts to...
Modern Materials Handling’s 2017 Casebook Collection
The 2017 Casebook features more than 35 case studies that put the spotlight on successful innovation...

Brownells: Designing for Efficiency and Growth
Brownells’ new Iowa distribution center has taken touches—and miles—out of the order...
Industry celebrates National Manufacturing Day
Fourth annual Manufacturing Day is a grassroots effort by U.S. manufacturers to improve the public...