#### prenee1

##### New member

- Location
- queen new york, united states.

When does a battery delivers it maximum power

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Sent from my HTC One M9 using Tapatalk

- Thread starter prenee1
- Start date

- Location
- queen new york, united states.

When does a battery delivers it maximum power

Sent from my HTC One M9 using Tapatalk

Sent from my HTC One M9 using Tapatalk

- Location
- Seattle, WA

- Location
- newburgh,ny

I was told temperture

In car batteries I was told the produce their most power in the summer when it's hot and you don't need that cranking power. And they produce the least power when it is cold and you do need it to turn over a cold engine.:lol:

- Location
- Springfield, MA, USA

There are second order changes in battery voltage versus temperature, but the big one is the change in rate that current can be delivered.

The maximum power that a battery can deliver is when it is connected to a load that has the same resistance as the internal resistance. The output voltage is half the open circuit voltage, and the product of voltage and current is maximum.

-Jon

- Location
- Austin, TX

When it is connected to its maximum load.../FONT]

...at its highest state of charge?

- Location
- Ann Arbor, Michigan

preenee1:

Exactly what winnie said.

If you do not have knowledge of calculus, then a way to see how power in the load varies as load resistance varies with constant source voltage and constant source internal resistance is to perform calcultations for incremental load resistance changes and calculate the load power. You will find that this maximum power transfer occurs at Rload = Rinternal.

Edison understood that a practical power distribution system could not be based on maximum power transfer as many others thought in 1879. Rather Edison understood that a low source impedance and moderately constant voltage distribution system was required.

.

- Location
- Placerville, CA, USA

:thumbsup:

preenee1:

Exactly what winnie said.

If you do not have knowledge of calculus, then a way to see how power in the load varies as load resistance varies with constant source voltage and constant source internal resistance is to perform calcultations for incremental load resistance changes and calculate the load power. You will find that this maximum power transfer occurs at Rload = Rinternal.

Edison understood that a practical power distribution system could not be based on maximum power transfer as many others thought in 1879. Rather Edison understood that a low source impedance and moderately constant voltage distribution system was required.

.

For practical distribution, the goal has to be not to transfer the highest possible amount of power, regardless of the fact that it wastes half of the available energy, but instead to go for a combination of high efficiency and reasonable power.