Deck 8: Batteries

Question 1

What is meant by "state of charge"?

Answer 1

State of charge is the percentage of battery voltage remaining compared to the fully charged state.

Question 2

Batteries have two voltage ratings, one at no load and one at rated load.

Answer 2

True

Question 3

When batteries or cells are connected in ___________ the voltage remains the same and the Amp-hour capacities add.

Answer 3

parallel

Question 4

Absorption charging means using a high charge rate and bringing batteries to 80% to 90% of full charge rather quickly.

Question 5

During the charging cycle, oxygen is formed at the positive plate, and H+ ions combine with SO4 ions to form sulfuric acid.

Question 6

A primary cell can be recharged.

Question 7

Describe the construction of a nickel-cadmium battery.

Question 8

Capacity of a battery varies according to ______________ and discharge rate.

Question 9

_____________ is a crystallization of lead sulfate on the plates of lead-acid cells.

Question 10

_________________ is the amount of time a fully charged battery can supply the system load without recharging.

Question 11

When current flows from a battery to a load, the battery is _____________.

Question 12

Describe the normal charging method of battery charging.

Question 13

Describe stratification.

Question 14

What are the three types of lead-acid batteries commonly used in renewable energy applications?

Question 15

The charge remaining, rate of discharge, and temperature of a battery affects the current.