Anything's possible

Circular superconductors also have current without EMF voltage, but that's not relevant here in lead/acid batteries. Ohm's Law as it was originally formulated is like the law about coming to a full stop at stopsigns and often gets ignored. It's really about the middle ground and not the extremes.

But superconductors don't break Ohm's Law. The resistance is exactly zero, so there can be current with no PD!

nib

Voltage = Current x Resistance, or V=IR. That's Ohm's Law.

A superconductor, as the name implies, has super low, "almost" zero electrical resistance. That's why the voltage (V=IR) is "almost" zero.

The internal workings of a battery is an electrochemical process. Ohm's law does not apply because there is no physical "resistor" involved in the chemical reaction inside a battery. The internal discharge in a battery is also an electrochemical process. There is no physical "resistor" involved, so again Ohm's law does not apply.

Ohm's Law applies only when you connect the battery voltage to an external "resistive load".

Types of Electrical Load | Resistive, Inductive & Capacitive Load

One common "amp hour "rating is the 20 hour discharge - which for 1000 amp hours would be a 50 amp steady draw. Although this is the most common rating, it is not terribly uncommon for a battery manufacturer to use a different rating. For example, a battery designed for computer UPS backup use MAY have a 5 hour rating - and the UPS MAY say it will support a 50% load for 20 minutes. This does NOT mean it will support a full load for anywhere CLOSE to 10 minutes, or that a

No, but in a car electrical system there is NEVER a situation where there is no load on the electrical system while the engine (and charging system) is functioning - and it's just as likely the dumming down of the British population comes from migration from within the UK (from whatever gene pool Commander Kinsey sprang from?)

In that EXACT situation you are correct - if the battery open circuit voltage and the charging woltage ARE exactly the same at a moment in time, no current will flow. This is true PARTICULARL if the battery is not at it's MAXIMUM float charge voltage (does not have a "surface charge") When a battery is charged beyond the cell's maximum chemical voltage current flows causing electrolisys and heating of the electrolyte (gassing) and the higher the excess voltage applied the more gassing and heating occurs, and the higher the current flows. This is in a Lead Acid battery. Very similar in a Ni-Cad or Nickel Iron battery (Edison cell). Lithium cells behave differently and the overcharge current regime can cause a LOT more dsmage and excitement!!!

Some are, some are not - but precious few have temperature sensors attached to or install;ed in the battery. They only sense ambient temperatue at the regulator - which, on most current vehicles is part of the ECU which most often resifes inside the heated and air conditioned passenger compartment ---. It DOES know engine coolant temperature and intake air temperature - from which it can calculate the "expected" battery temperature - but it cannot compensate for lad or battery condition (internal; resistance) which can cause the battery to be significantly warmer than predicted.

But it is an empirical law, and he had no zero ohm resistors. It did not cover theory dealing with ideals.

Almost?

Like I wrote above, it is not relevant here in lead acid batteries. Tell me something that I don't know instead of pretending that I don't know something that I do.

From Wikipedia:

Ohm's law is an empirical law, a generalization from many experiments that have shown that current is approximately proportional to electric field for most materials. It is less fundamental than Maxwell's equations and is not always obeyed.

Yes, almost. You've read it right. Superconductor is still not a "perfect conductor". A perfect conductor will have 0 Ohm of electrical resistance. A perfect conductor will make "perpetual machine" a reality.

You spout crap.

Wow, are you like in 1st grade maths or something? You really need to speak to your teacher about your lunacy. 367.92W spread over a year! Let's make this easier for your little brain. Grab hold of something hot, it burns you. Now work out how much heat you absorbed, and arrange for that heat to enter your hand over 24 hours. Is it still sore? No. Your stupidity is the same bullshit I see in papers - "this cost the taxpayer 50 million!" Yeah but there's more than 50 million people, so you divide that.... Or, "humans generate 60 billion tonnes of CO2 a year!" But there's a lot of us. Each one generates a fraction of that.

Irrelevant if there's a load or not. That will be drawing current from the alternator, you still need to make the alternator put the same voltage on the battery to charge it.

We were discussing a Lithium battery, not something subject to extreme temperature changes.

It has everything to do with Ohm's law - the resistance in the wires, charging circuitry, battery will prevent it being infinity amps.

I remember when cars just provided about 14V to charge the battery. Mine (2002) supplies 14.4V, then drops to 13.8 when it's full. But how does it know when it's full? How can the alternator tell the difference between current from it to the battery and current from it to the headlights? Looking at my battery, there are three wires entering each battery terminal, so the alternator doesn't know if that current flowing out of itself is going into the battery or continuing on to a load.

Commander Kinsey used his keyboard to write :

Ohm was working with the relation of voltage and current with wires of differing materials. Resistance was the term for the ratio between them in his experiments.

Keep in mind that some circuits display negative resistance, seemingly defying Ohm's Law, but actually Ohm's Law simply does not apply to those devices which cause these anomalies. Batteries and some other circuits are not resistive conductors in the sense of Ohm's Law.

No, I don't. He used real world materials, not pie in the sky ideals like ideal sources and sinks -- empirical experiments. You can prove me wrong by showing empirical evidence of infinite current, resistance or voltage, but hurry, I haven't got all day.

Lithium batteries will have reduced capacity at freezing temperatures in winter. Lithium batteries will heat up if fast-charged. Lithium batteries will bulge if overcharged.