This week, 4 Electrical Equipment stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Slipping from a C to a D rating, EnerSys (ENS) takes a hit this week. EnerSys manufactures, markets, and distributes industrial batteries. For more information, get Portfolio Grader’s complete analysis of ENS stock.

Highpower International, Inc. (HPJ) gets weaker ratings this week as last week’s C drops to a D. Highpower International, Inc. develops and manufactures nickel metal hydride and lithium-ion rechargeable batteries and related products. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of HPJ stock.

Enphase Energy, Inc.’s (ENPH) rating weakens this week, dropping to a F versus last week’s D. Enphase Energy, Inc. provides solar energy management systems for residential and commercial markets. The company also gets F’s in return on equity. For more information, get Portfolio Grader’s complete analysis of ENPH stock.

This week, Broadwind Energy, Inc. (BWEN) drops from a D to a F rating. Broadwind Energy, Inc. manufactures, installs and maintains components for energy and infrastructure-related industries with a focus on the wind energy sector. The company also gets F’s in earnings surprise and free cash flow. For more information, get Portfolio Grader’s complete analysis of BWEN stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.