Maxwell Technologies Inc. (NASDAQ:MXWL) jumped 12.03% after the company announced that it is supplying ultracapacitors to ABB, the global leader in power and automation solutions, for ABB’s recent contract win to upgrade Philadelphia area rail lines. Maxwell Technologies Inc. (NASDAQ:MXWL) stock performance was 120% in last session and finished the day at $16.02. Traded volume was 2.36million shares in the last session and the average volume of the stock remained 2.83million shares. The beta of the stock remained 1.63. Maxwell Technologies Inc. (NASDAQ:MXWL) insider ownership is 1.50%.

Mr. Huanyu Mao (“Mr. Mao”) resigned from his positions as a director and Chief Technical Officer of China BAK Battery, Inc. (NASDAQ:CBAK), effective immediately. Mr. Mao’s resignation was due to personal reasons and not because of any disagreement with the Company on any matter relating to the Company’s operations, policies or practices. China BAK Battery Inc. (NASDAQ:CBAK) rose 11.96 percent to $3.09 Tuesday on volume of 308.4K shares. The intra-day range of the stock was $2.78 to $3.15. China BAK Battery Inc. (NASDAQ:CBAK) has a market capitalization of $38.99million.

Reno-based Altair Nanotechnologies Inc. (NASDAQ:ALTI) developed the lithium ion batteries used in Proterra buses rolled out this week by the Regional Transportation Commission. Altair Nanotechnologies Inc. (NASDAQ:ALTI)’s stock on Apr 22, 2014 reported a increase of 5.79% to the closing price of $4.02. Its fifty two weeks range is $2.02 -$8.00. The total market capitalization recorded $44.04billion. The overall volume in the last trading session was 67.3K shares. In its share capital, ALTI has 11.59million outstanding shares.

Just last month, Digital Power Corporation (NYSEMKT:DPW) shares jumped 90 percent to a high of $3.05, after the company landed a five-year contract with Israel Aerospace Industries. The company produces low-voltage power supply modules, which are designed for battlefield use, to resist shock and vibrations. On Tuesday, shares of Digital Power Corporation (NYSEMKT:DPW) dropped -0.75% to close the day at $1.34. Company return on investment (ROI) is -1.80% and its monthly performance is recorded as -30.93%. Digital Power Corporation (NYSEMKT:DPW) quarterly revenue growth is 91.43%.