power rating versus ampere rating

Started by jimj, March 27, 2016, 12:48:12 PM

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jimj

Hello,

   Whenever I read the specs for a charge controller, the units are amps.
Since controllers can usually be configured for different output battery levels, e.g., 12, 24, 48, do I deliver more power using a higher battery voltage setup?
   If I use 12vdc and the max current is 50 amps, and the power is 50A x 12VDC =600W, do I calculate the output max for a 48VDC battery system as 50A x 48VDC = 2.4kW?

Thank you,
J

TomW

Jim;

That is indeed true.

Power (Watts) is Amps multiplied by Volts.

Do NOT mistake me for any kind of "expert".

( ͡° ͜ʖ ͡°)


24 Trina 310 watt modules, SMA SunnyBoy 7.7 KW Grid Tie inverter.

I thought that they were angels, but much to my surprise, We climbed aboard their starship and headed for the skies

jimj

You missed the point.
I read your caveat.
Thanks for the warning.

Westbranch

Yes you will deliver more power, and as Tom said A x V gives you the total.
KID FW1811 560W >C&D 24V 900Ah AGM
CL150 29032 FW V.2126-NW2097-GP2133 175A E-Panel WBjr, 3Px4s 140W > 24V 900Ah AGM,
2 Cisco WRT54GL i/c DD-WRT Rtr, NetGr DS104Hub
Cotek ST1500 Inv  want a 24V  ROSIE Inverter
OmniCharge3024  Eu1/2/3000iGens
West Chilcotin 1680+W to come

TomW

Quote from: jimj on March 27, 2016, 02:13:24 PM
You missed the point.
I read your caveat.
Thanks for the warning.

How so?

It is a basic, electricity 101 question. I did not check your math but the formula is absolute and correct. Watts equals volts times amps so yes you can shove more power through at 48 volts compared to 12 volts with same ampere rating.

Just how it is.

Tom
Do NOT mistake me for any kind of "expert".

( ͡° ͜ʖ ͡°)


24 Trina 310 watt modules, SMA SunnyBoy 7.7 KW Grid Tie inverter.

I thought that they were angels, but much to my surprise, We climbed aboard their starship and headed for the skies