Hi everyone!

128bits

New Member
Hello everyone!

I am new to solar energy, I want to explore more in-depth into it and I hope you guys can really help me out through my journey.

I have few questions and I hope you guys can help me out before I start my mini DIY project.

Is it possible to charge and discharge a lithium battery at the same time using a solar panel? If yes, what kind of component will I need in order to achieve it? If not, is there any method for me to work around it?

Pardon my English and thank you all for reading, hope to get some advice from you all.
 

FilterGuy

What, me worry?
Is it possible to charge and discharge a lithium battery at the same time using a solar panel? If yes, what kind of component will I need in order to achieve it? If not, is there any method for me to work around it?
Strictly speaking, a battery is either being charged, discharged, or not used. It can not be charged and discharged at the same time.... but I don't think that is the intent of your question. Lets look at a simple system diagram.

Edit: Modified image to get rid of acronyms
1632335388885.png

When the solar is putting energy into the system. It does not know if that energy is going to the battery or to the load.
If the load is drawing energy from the system It does not know if that energy is coming from the battery or the solar.
* If the load is drawing less energy than the solar is providing, the excess energy from the solar will go to the battery.
* If the load is drawing more energy than the solar is providing, the extra energy will come from the battery.
* In the very rare case that the load is drawing the exact same amount of energy as the solar is providing, nothing will be coming or going to the battery.
 
Last edited:

FilterGuy

What, me worry?
Oh..... Please forgive my rudeness. Welcome to the forum!!! It is a great place to learn.

Be sure to check out the beginners resource section.

Also Check out all of the beginner Videos @Will Prowse did:
 

128bits

New Member
Strictly speaking, a battery is either being charged, discharged, or not used. It can not be charged and discharged at the same time.... but I don't think that is the intent of your question. Lets look at a simple system diagram.

Edit: Modified image to get rid of acronyms
View attachment 65855

When the solar is putting energy into the system. It does not know if that energy is going to the battery or to the load.
If the load is drawing energy from the system It does not know if that energy is coming from the battery or the solar.
* If the load is drawing less energy than the solar is providing, the excess energy from the solar will go to the battery.
* If the load is drawing more energy than the solar is providing, the extra energy will come from the battery.
* In the very rare case that the load is drawing the exact same amount of energy as the solar is providing, nothing will be coming or going to the battery.
Thank you for answering my queries.

If that's the case, will there be any drawback if I prolong using it in such a manner as you mention above? Like shortening the battery life and etc?

Thank you and I definitely will read up on the beginner resources you provided!
 
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