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Common Battery Types
Common Battery Types
Batteries size:
D: 1.5v
C: 1.5v
9V: 9v
AAA: 1.5v
AA: 1.5v
The most common batteries in the Design Lab are A and AA, although other sizes are also used. You may also use C, D or 9V batteries.
Can you think of any other battery sizes?
Can you think of any other battery sizes?
What are they used for?
What are they used for?
HOW TO TEST
HOW TO TEST
Set a multimeter to DC volts to 20v.
Touch red to + and black to - on the battery.
Read the voltage and find it on the scale.
What happens when you switch the red to - and black to + on the battery?
What happens when you switch the red to - and black to + on the battery?
How has the reading stayed the same? And changed?
How has the reading stayed the same? And changed?
Voltage alone is a rough guide. A battery can read well with no load and fail in use. Testing a battery performance under load is the best way to know if the battery works.
Design Lab Safety: Do not recharge alkaline cells.
Design Lab Safety: Do not recharge alkaline cells.
We only recharge batteries like our power tool, computer and phone batteries here in the lab. Sizes A and AA are not recharged.
We only recharge batteries like our power tool, computer and phone batteries here in the lab. Sizes A and AA are not recharged.
Battery Types
Battery Types
Think of batteries as little power packs that wake up our favourite electronics, but different gadgets need different kinds of power!
Alkaline batteries are like slow and steady walkers. They are cheap and great for things that don't need a lot of energy, like your TV remote or a wall clock. But once they run out of juice, they have to be thrown away.
NiMH batteries are the recyclers. They are rechargeable, which means when they run out of energy, you just plug them into a charger to fill them up again! They are perfect for toys and game controllers that you play with all the time.
Lithium batteries are the superheroes of the battery world. They are super lightweight, last a really long time, and don't care if it's freezing cold outside. They are great for high-tech gear like cameras, and some can even be recharged over and over again!
Parts of Alkaline Battery
Parts of Alkaline Battery
A typical alkaline battery has two main parts:
Positive terminal (+): The small raised bump at one end.
Negative terminal (−): The flat metal end.
The materials inside react chemically to produce electrical energy.
Safety: Short Circuit
Safety: Short Circuit
If the batteries in your project become hot, disconnect them immediately. A short circuit may be causing them to overheat, drain quickly, or become damaged.
If the batteries in your project become hot, disconnect them immediately. A short circuit may be causing them to overheat, drain quickly, or become damaged.
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