What does 30 Ah mean on a battery?

What does 30 Ah mean on a battery?

An ampere hour (abbreviated Ah, or sometimes amp hour) is the amount of energy charge in a battery that will allow one ampere of current to flow for one hour. A milliampere hour (mAh) is 1,000th of an Ah, and is commonly used as a measure of charge in notebook computer batteries.

How many watts can a 30 amp MPPT charge controller handle?

600 watts

How many amps should my charge controller be?

You typically want to make sure you have a charge controller that is large enough to handle the amount of power and current produced by your panels. Typically, charge controllers come in 12, 24 and 48 volts. Amperage ratings can be between one and 60 amps and voltage ratings from six to 60 volts.

What is the load on a charge controller?

The load terminals on a charge controller power connected DC devices. The DC device must be compatible with the battery nominal voltage, and the battery bank capacity should be appropriately sized for the load. Loads can be many things from a DC refrigerator to a DC LED light.

How is charge controller efficiency calculated?

To calculate the amp rating of a controller, use the formula amps × volts = watts (or watts/volts = amps). Thus, an 80-watt solar module charging a 12-volt battery should be regulated using a charge controller rated at 6.7A (80W/12V) or more.

How do you size a charge controller?

Add up the total watts of solar panels and divide by either 14.4 for 12-volt systems 28.8 for 24 volts or 58.8 for 48-volt battery banks. This will give you maximum output amps from the controller. If you don’t want to waste output in heat, size the controller at around two-thirds the rated output of the controller.

What is charge controller efficiency?

Maximum Power Point Tracking is electronic tracking – usually digital. The charge controller looks at the output of the panels and compares it to the battery voltage. All of these have built in MPPT. Efficiency is around 94% to 97% for the MPPT conversion on those.