When you are finished, you should be able to: 1  State the role of a helping verb and list some examples. 2  Explain how helping verbs can clarify the verb tense of a sentence. 3  Identify helping verbs in a sentence.
The dry cell battery is one of the most commonly used types, including AA, 9-volt, and watch batteries. Dry cell batteries are different from wet cells because their electrolytes are contained in a low-moisture paste, while a wet cell has electrolytes contained in a liquid, hence the difference in names.
An AGM (Ca/Ca) battery can normally replace a wet Low Maintenance (Sb/Ca) or wet Maintenance Free (Ca/Ca) battery, but a wet Low Maintenance (Sb/Ca) battery normally cannot replace an AGM (Ca/Ca) VRLA battery without adjusting the charging voltages.