If it's not in the base game then just make it a part of the base game, like using two batteries:
One who will be your main battery and the other one would only charge when the main one is fully charged.

Originally posted by Cengaver_:

Is there is a way that you make batteries supply more power than their load?

no

That's not how batteries work, in the game or real life. A battery can only output the volts it was designed for (OK, real world is slightly different, they will output a slightly higher voltage when fully charged and drop to a slightly lower voltage as the charge is used, but that's normal behaviour and besides the point).

You would need some kind of voltage alteration circuit to convert amps to volts, and I don't believe this game knows about amps as such, nor has the 'electronic' components that would perform such a function.

Do what the game devs do - cheat! Make your own battery with a hidden reactor inside, running on a stupidly high capacity alien power cell (such that it will never run out), pipe the output so that it looks like the battery is providing the power but in reality it's the reactor, make the reactor indestructible so that it never needs maintenance and takes no damage from any source. Surely should be possible to work out a way to overvolt from that starting point.

Originally posted by Buggy Boy:

That's not how batteries work, in the game or real life. A battery can only output the volts it was designed for (OK, real world is slightly different, they will output a slightly higher voltage when fully charged and drop to a slightly lower voltage as the charge is used, but that's normal behaviour and besides the point).

You would need some kind of voltage alteration circuit to convert amps to volts, and I don't believe this game knows about amps as such, nor has the 'electronic' components that would perform such a function.

Do what the game devs do - cheat! Make your own battery with a hidden reactor inside, running on a stupidly high capacity alien power cell (such that it will never run out), pipe the output so that it looks like the battery is providing the power but in reality it's the reactor, make the reactor indestructible so that it never needs maintenance and takes no damage from any source. Surely should be possible to work out a way to overvolt from that starting point.

Yeah I guess you can do that, by the way for the infinite fuel part: You can just spawn a fuel rod and tick the box ''invulnerable to damage'' and it will never run out, also as an extra thing, you can add the tag ''coilgunammo'' to the same fuel rod and load it to a coilgun for laser-coilgun.(Can be done with other weapons too, even handheld ones.)

Originally posted by Buggy Boy:

That's not how batteries work, in the game or real life. A battery can only output the volts it was designed for (OK, real world is slightly different, they will output a slightly higher voltage when fully charged and drop to a slightly lower voltage as the charge is used, but that's normal behaviour and besides the point).

You would need some kind of voltage alteration circuit to convert amps to volts, and I don't believe this game knows about amps as such, nor has the 'electronic' components that would perform such a function.

Do what the game devs do - cheat! Make your own battery with a hidden reactor inside, running on a stupidly high capacity alien power cell (such that it will never run out), pipe the output so that it looks like the battery is providing the power but in reality it's the reactor, make the reactor indestructible so that it never needs maintenance and takes no damage from any source. Surely should be possible to work out a way to overvolt from that starting point.

If you have a (real life) device rated to operate on 12V, you can "overvolt" it by using a 24V battery.

No is the only correct answer.

You can overvolt with a battery but the battery has to be a reactor. Wow helpful!!!

What is this strange feeling? Is that what they meant by "being ignored"?

Originally posted by simsyu:

What is this strange feeling? Is that what they meant by "being ignored"?
:barotrauma::ambition:

Bro I'm not trying to charge my batteries fast, instead to use them for over-volting instead of reactor so I can over-volt without frying my whole circuit.

Also by reactor over-volting, you would best over-volt for 1,5 the load without frying the circuit, by battery over-volting you could potentially over-volt your engine for 2-3 times the load without problems. If only there were some way...

Oh yeah my bad.
Edit:

Originally posted by DECAFBAD:

No is the only correct answer.

You can overvolt with a battery but the battery has to be a reactor. Wow helpful!!!

Devs have shown a few creative ways in the vanilla game to disguise one thing as another, I see no reason why we shouldn't do the same.