Charge controller ?

[Muddydogs]

I don't guess I completely understand what my charge controller does and doesn't do so here is a question.

I have a PWM solar controller hooked up to 200 watts of solar and 2 group 24 battery's, controller is adjustable for shut off volts.Do I need to worry about changing the shut off volts while in storage or does the controller take care of the battery's and won't over charge them?

Say I have the controller set to shut off at 14.4 volts while I'm using it, should I change the shut off to 13.4 volts in storage?

Also where should I set the top end shut off, 14.4, 14.6 or ?

Thanks, Jim S.

[Muddydogs]

Link to manual, http://www.windynation.com/cm/P30L%20Controller%20Manual_R1.pdf

[Muddydogs]

Here are the specs on my controller, What I am talking about adjusting is what they call the "Floating Charging Voltage (adjustable) 13.8 V DC 27.6 V DC"

Technical Specifications
Rated Current Charge 30 Amps
Rated Load Current 30 Amps
Typical Idle Consumption At idle < 5mA
Maximum Solar Input Voltage 48 V DC
Rated Working Voltage 12 V DC or 24V DC Battery System
Floating Charging Voltage (adjustable) 13.8 V DC 27.6 V DC
Low Voltage Protection (adjustable) 10.7 V DC 21.4V DC
Low Voltage Recovery (adjustable) 12.5 V DC 25.0V DC
No Load Loss ?30mA
Loop Voltage Drop ?170mV
Temperature Compensation -4.0 mV/Cell°C
Physical Specifications
Parameter Value
Dimension (L x W x H) 90 mm x 188 mm x 48 mm (3.54" x 7.40" x 1.89")
Weight 12.7 oz (360 g)
Operating Temperature 14°F to 140°F (-10°C to 60°C)
Operating Humidity ?90% relative humidity (non-condensing)
Wire Size Up to 16mm² (7AWG)

[BFL13]

The "shut off" and restart voltage settings are for the "load" terminals and have nothing to do with the "battery" terminals. You should have the batteries on the battery terminals and nothing on the load terminals when using the controller for RVing.

The only settings you care about are the charging voltage (absorption voltage ) and floating voltage (if they are not just the one setting for both like on a Solar30 )

Be sure to always have the controller connected to the battery first, then hook up the array. Always unhook the array before disconnecting the battery side.

[RJsfishin]

IMO for storage you should have a controller that goes into float mode after full charge