Battery Cell Charging

Which bit don't you understand?

It seems perfectly logical and understandable to me.

Perhaps you should ask someone who speaks your language to explain it to you.

thank u for ur advice but my it's nothing to do with my english, I don't understand why the size of the cell was impacted by the charging time ? (If the maximum charging voltage is limited, it is necessary to select the number of cells that can be charged in the time available. This, in turn,may require using a larger cell than would otherwise have been necessary)

I predict Andy will be chiming in shortly..

DING DONG!!!

It is also perfectly logical to me too.....

Is it that you do not understand why the manufacturer specify the limit for charging current and voltage?( If it is the point the reason is to avoid overheating, fire and damage to the cell ) Specify what you do not understand so that members can reply.

I don't understand why the size of the cell was impacted by the charging time ? (If the maximum charging voltage is limited, it is necessary to select the number of cells that can be charged in the time available. This, in turn,may require using a larger cell than would otherwise have been necessary)

You are quite right to query it, because it is nonsense. The overall size of the battery is determined by the current and voltage requirement of the attached equipment. The number of individual cells depends on the design decision to use a particular driving voltage and the size of the cells depends on the design decision to run the equipment for a defined time before recharging. We arrive at a amp-hour capacity for the battery and a charge time determined by the permitted rate of charge, which in turn depends on the chemistry and design of the battery. If that charge time is greater than the available time, the project fails. It is not that the charging time available determines the size of the battery; it is the size and design of the battery that determines the minimum charging time.

Next time, you should read more carefully before offering a nonsensical answer to a question that was not asked.

The question asked was what it meant that "The time available to charge the battery can affect both the number of cells and the cell size. " I took some time to explain that it was the other way round. Which part of the explanation did you not understand?

Your explanation does not address the fact that the question asks for an explanation of the charging time. Or, "Charging time as limiting factor "

Not how to select a battery.

Sorry, but your attention span might be getting too short. The OP was asking for an explanation of "Charging time as limiting factor The time available to charge the battery can affect both the number of cells and the cell size."

Now I have two batteries. The LiPo 3S (3 cells) 1800 mAh battery I charge at 1800 mA. Charge time 1 hour. The LiPo 4S (4 cells) 2400 mAh battery I charge at 2400 mA. Charge time 1 hour. Please explain to me how the charge time affects the size of the battery or the number of cells.

Never mind. I'm sure we have thoroughly confused the OP by now.

To be more accurate: I have provided an explanation to both the OP and to yourself. If there is any confusion, it is not on my part, so possibly it lies with you.