EXHIBIT 11 CHARTER POWER SYSTEMS, INC. AND SUBSIDIARIES EARNINGS PER SHARE COMPUTATIONS (Dollars and shares in thousands) (Unaudited) Three Months Ended April 30, ------------------ 1997 1996 ---- ---- NET INCOME $4,135 $3,646 ===== ===== Weighted average number of common shares outstanding 6,083 6,283 Effect of shares issuable under stock option plan 182 265 ----- ----- WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING (PRIMARY) 6,265 6,548 ===== ===== NET INCOME PER COMMON AND COMMON EQUIVALENT SHARE (PRIMARY) $ 0.66 $ 0.56 ===== ===== Weighted average number of common shares outstanding 6,083 6,283 Effect of shares issuable under stock option plan 182 266 ----- ----- WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING (FULLY DILUTED) 6,265 6,549 ===== ===== NET INCOME PER COMMON AND COMMON EQUIVALENT SHARE (FULLY DILUTED) $ 0.66 $ 0.56 ===== =====