QUESTION: Fix punctuation: Battery life is normally more than 4 years depending on intensity of use
ANS: Battery life is normally more than 4 years, depending on intensity of use.

QUESTION: Fix punctuation: This product was added to our catalog on Wednesday 01 August 2012
ANS: This product was added to our catalog on Wednesday 01 August, 2012.

QUESTION: Fix punctuation: In the battle of the Coral Sea May 7 to 8 lost the USS Lexington
ANS: In the battle of the Coral Sea May 7 to 8 lost the USS Lexington.

QUESTION: Fix punctuation: After his death his widow asked her to republish and write the foreword to his essays
ANS:
After his death, his widow asked her to republish, and write the foreword to his essays.