190104e battery fundamentals and services

Question 1

what are the purposes of a battery?

pg.2

Answer 1

• start the vehicle
• power the electric circuits when the alternator is not running
• take electric shock loads
  pg. 2

Question 2

what are the safety precautions/rules when working with batteries? (10 of them)
pg.3-5

Answer 2

• wear eye and breathing protection
• wear anything the protects you from electrolytes
• know that a solution of baking soda and water neutralizes electrolytes
• always use the appropriate tool to carry batteries
• avoid sparks near the battery
• do NOT service a battery that you suspect or that was frozen
• electrolytes need to be above the plates before any boosting, charging or testing is performed
• turn electronics off first before removing battery cables
• when charging a battery make all the connections to the battery first before connecting the charger to the wall
• don’t lay tools (conductors) on top of the battery
  pg. 3-5

Question 3

what are the 3 types of batteries that I will maintain, service and test? describe some details about each type.
pg.6-7

Answer 3

• maintenance type batteries (conventional batteries)
  - design to allow the electrolytes to be checked and adjusted through maintenace
• low maintenance type batteries
  - are design to reduce the amount of maintenance required through its life span
  - usually has a see-through case that allows you to visually monitor electrolyte levels, also has a cap for access of each cell
• maintenance-free batteries
  - design with no access to the battery cells
  - the battery is glued and sealed, you can only monitor the battery electrolytes level through a transparent case or a sight-glass that indicates the state of charge and liquid levels
  pg. 6-7

Question 4

facts about deep cycle batteries

pg.8

Answer 4

• can withstand frequent discharge and recharge cyclings
• can deliver small amounts of amperage over a long time
• manufactured as maintenance free type batteries
• thick, high density positive plates
  pg. 8

Question 5

what causes permanent battery damage?

pg.7

Answer 5

• repeated discharge below 75% of full charge for long periods
  pg. 7