AGM battery setpoints?
Now that I have this nice fully adjustable Rogue MPPT 3048 I suddenly realized that I don't know battery setpoints - Absorb V, Float V and Full I (charging current at SOC 100). Alright, current in...
Forum Discussion
Best inrush analogy is:
Filling a tire with air..
At first the tire will take all the air your compressor and hoses can give it...That is the inrush...
As it fills up...pressure of the tire begins to increase... If your supply air is only 1 cubic foot a minute at 50 psi the tire will take longer to fill than if you had a 50 cubic foot/min at a 100 psi source.
Batteries and converters:
Our pump is the converter/charger. Current (CFM) and voltage (PSI) which are both set by the mfg.
An empty/low battery that is good will be like an empty/low tire.
The higher the current ability of the converter the more current will flow into the battery. This is restricted initially by the voltage of the converter..The higher the voltage the greater the current, up to the limit of the converter.
Filling two tires at once you could take 2 time the air at first v/s a single tire, if your compressor/ hoses had the capacity. Same?
Charging multiple batteries follows the same rules.
Hoses are like wires. Small hoses= slow filling, Small wires = low current slow charging .... Oh... Resistance...
More inrush:
Converters have inrush spec's when 120vac is initially applied.
The capacitors in there are like the tires but fill up rapidly.
about 2 cycles of the 60 per second cycle (hertz) 120vac 60hz to accomplish this, like Sal said.
DC and AC motors have inrush... When the motor is starting from stop the initial current will be great.. Not long about 2-3 cycles of 60 cycles (hertz) for most depending on the load and design of the motor.
Lastly:
Our converters have those capacitors both for input "Primary" 120vac and the output (secondary) 12vdc.
If your converter has been disconnected from 120vac and disconnected from 12vdc for a couple of minutes and you re-connect the 12vdc to the battery.... You will pull a substantial arc/flash as you connect the battery lead...completing the + and - path to the converter. That is Inrush to the DC side of the converter. Those same kind of capacitors as in the AC side...
The AC side inrush is not noticeable but those "primary" input side caps will charge.... Inrush/startup...
Jim
Filling a tire with air..
At first the tire will take all the air your compressor and hoses can give it...That is the inrush...
As it fills up...pressure of the tire begins to increase... If your supply air is only 1 cubic foot a minute at 50 psi the tire will take longer to fill than if you had a 50 cubic foot/min at a 100 psi source.
Batteries and converters:
Our pump is the converter/charger. Current (CFM) and voltage (PSI) which are both set by the mfg.
An empty/low battery that is good will be like an empty/low tire.
The higher the current ability of the converter the more current will flow into the battery. This is restricted initially by the voltage of the converter..The higher the voltage the greater the current, up to the limit of the converter.
Filling two tires at once you could take 2 time the air at first v/s a single tire, if your compressor/ hoses had the capacity. Same?
Charging multiple batteries follows the same rules.
Hoses are like wires. Small hoses= slow filling, Small wires = low current slow charging .... Oh... Resistance...
More inrush:
Converters have inrush spec's when 120vac is initially applied.
The capacitors in there are like the tires but fill up rapidly.
about 2 cycles of the 60 per second cycle (hertz) 120vac 60hz to accomplish this, like Sal said.
DC and AC motors have inrush... When the motor is starting from stop the initial current will be great.. Not long about 2-3 cycles of 60 cycles (hertz) for most depending on the load and design of the motor.
Lastly:
Our converters have those capacitors both for input "Primary" 120vac and the output (secondary) 12vdc.
If your converter has been disconnected from 120vac and disconnected from 12vdc for a couple of minutes and you re-connect the 12vdc to the battery.... You will pull a substantial arc/flash as you connect the battery lead...completing the + and - path to the converter. That is Inrush to the DC side of the converter. Those same kind of capacitors as in the AC side...
The AC side inrush is not noticeable but those "primary" input side caps will charge.... Inrush/startup...
Jim
