I had this arg… er, discussion with the guy in a local blaster shop… I mentioned I had heli and boat batteries up to 65C and he thought that meant that the battery would try and pump 65C’s into the poor motor…
I tried to explain to him that, just because the battery can (theoretically) supply a 65C rating, it will only depend on what the motor ASKS for…as Guido said.
So, a C rating much higher than the motor requires = good. Having a battery with the C rating smaller than the motor demands = fire, destruction… melted things, much swearing. With a decent motor and a high C battery, better wires and connectors are a great idea (necessity) = excellent
A good explanation is think of the battery as a bucket of water with a lid and a 5mm hole for the 5mm aquarium hose. You can use any size hose, but only what can fit thru the 5mm hole (the C rating) can flow. you have a piece of 1" hose connected over the 5mm hole… still only so much water (not much) can get into the 1" hose when syphoning the water… it will take hours to syphon out the water… this is like a low C rating.
So, you get a mofo big 1" outlet hole in the lid… and a 1" hose … it syphons the water out in about 3 seconds flat… that is like a high C rating battery. The bucket (battery) has the same amount of water (electrickery) in it, but the higher C rating (bigger outlet hole), the easier/faster the water/electrickery can come out of the bucket/battery…
The wire size thingy, well that is like if you plug a big bad pump (water blaster) water inlet hose onto your bucket of water… if you connect it with a 5mm fish tank hose, the water blaster will instantly suck the small hose flat and it wont get any water… that is like a big gel blaster motor (and mag motor) trying to suck all of that power out of the battery thru little thin wires.
With the same bucket and you Karcher waterblaster and a mofo big 1" hose… the water blaster can suck the bucket dry in about .76786 of a second… but no damage… that is like a high C rating battery thru decent size wires… it all has to matching… the battery needs to have more C rating than the motor can ever call for, the wire has to be able to carry the amperage without glowing like a toaster wire… then all is at peace in the universe
Yes Guido… the ching chong checker batteries you can really halve the capacity, halve the C rating, 1/4 the amount of recharge life… The good ol’ boys in China test their batteries and find that if… Jupiter, the moon, the sun and uranus all line up… the battery has just come off a charger (overcharge) in a vacuum, at sea level… may have once spiked to 40C (once, when the wires shorted) … so, therefor the battery is obviously a 40-45C rated battery … so, they round it up to 50C. Even though, it is really struggling to be a 20C run continuously
So, we believe them, buy the battery… ripped off again when the battery goes into ‘puff-A-matic’ by about the 3rd use…
Sorry for the waffle… I’m in one of those moods