Batteries Flashcards
Non-Rechargeable are?
Dry cells and lithium
Electrolyte of a good battery is?
1.22
Rechargeable batteries are?
Lead acid, alkaline, nickel cadmium, and zinc
When you get acid on your skin you should?
Wash the affected area for 15 minutes with fresh water. In desperate measures where you have no fresh water, salt water may be used as a last resort.
What is the optimal temperature for taking a specific gravity reading of batteries?
80 degrees F
What are the 5 rates for charging a battery?
Initial Float Normal Fast (Emergency) Equalizing
While charging a battery you must never let the temperature of any cell to rise above _____°F? This is also the max temperature of electrolyte.
125°
What gas is formed when saltwater and lead acid are mixed?
Hydrogen Chloride
To correct battery electrolyte to 80 degrees you must?
Use a hydrometer and add .001 for each 3 degrees above 80° and subtract .001 for each 3 degrees.
Floating ball charge of a lead acid battery what are the % of the following colors?
Red, White, Green?
Red, White?
Red alone?
90%
50%
10%
With a specific gravity of 1.220 (good electrolyte) each cell should read ____ volts?
2.15 volts
What are the 6 types of batteries used in the coast guard?
Secondary batteries are rechargeable
- Lead Acid
- Alkaline
- Nickel cadmium
- Zinc
Primary batteries are non-rechargeable
- Dry Cell
- Lithium cell
The function of a battery charging system is to do what?
Replace the electrical energy that the storage batteries has consumed during its use
Extended normal charge given at the finishing rate to ensure that all the sulfate is driven from the plates and that the cells are restored to a maximum specific gravity is known as ________ charge?
Equalizing charge
What circuit of a battery charger senses the state of charge in a battery?
Saturable reactor sensing
What component in a battery charger converts AC to DC?
Rectifier
If electrolyte comes in contact with your eyes, flush the eyes with fresh water for a minimum of _____ minutes?
15
A cell is a device that transforms _____ energy into electrical energy?
Chemical
Before taking hydrometer readings on a battery that has been on charge, secure the battery charger and wait _____ minutes?
10
Why should you never run an alternator as an open circuit?
A ruinously high voltage will build up
If a dry cell battery if properly stowed, how long will it last?
2 years
What do you clean battery lugs with?
Sodium bicarbonate or ammonia
Electrolyte levels should be _____ of an inch above the separator plates?
3/8”
How do you properly mix electrolyte?
Always pour ACID into WATER!!!!
An equalizing charge on a battery is continued for 4 hours or until what?
The specific gravity of all the cells shows no change
You check the gravity every 30 minutes
Battery condition caused by high rate charging?
Excessive gassing
