Charge controller features

The power of the charge controller must be equal to or above the panel power. (12v * 100A = 1200watts and above, etc.)

Some charge controller manufacturers write that the device can be equal to the panel power or 5% higher than the panel. There are also charge controllers that connect higher panel power and charge current setting is made by connecting higher panel power. Catalog information should be checked on this subject.

Important: In charge controllers, the fixed value is current. In electrical receivers, the fixed value (watt) is power.

Charge controller naming is done according to 12v voltage.

Example 50A charge controller power and power values ​​for Panel input

For 12v installation 12v x 50A =   600w ( Device Label 100v 50A/ 12 24 48v i.e. 100v Panel voltage input, 50A battery charging current, suitable for 12-24-48v installation. )

For 24v installation 24v x 50A = 1200w

For 48v installation 48v x 50A = 2400w This charge controller can be connected to a 600w panel in a 12v installation, a 1200w panel in a 24v installation, and a 2400w panel in a 48v installation.

Panel Input Voltage

The values ​​given as 75v-100v-150v are used to determine the open circuit voltage (Voc) coming from the panel, or to determine the charge controller according to the (Voc) voltage.

Some companies also have charge controllers with inputs such as 200v, 250v and 450v.

Battery Charge Current

There are charge controllers with current values ​​of 10A-20A-30A-35A-40A-50A-60A-80A-100A.

These currents are the values ​​​​for charging the batteries.

Battery Voltage Determination

A charge controller with a current of up to 50A is suitable for 12v and 24v installations. For 48v, there are usually 50A and above current levels.

Determining the fuse current between the battery and the charge controller:

The fuse current is found by dividing the total power of the panel or panels by the installation voltage. Panel power WATT / Battery voltage VOLT (Example 400w / 12v = 33.33A

1.25 times this calculated current, 33.33A x 1.25 = 41.66A, that is, the closest value is 40A fuse.

Provided that the number of panels remains constant, the battery charge current between the battery and the charge controller does not change in case of series or parallel connection.

Between the panel and the charge controller

A 2-pole fuse must be used between the panel and the charge controller. It is specifically stated that the positive and negative ends must be separated when the panels are not used.

In order to determine the fuse current, it is determined as the upper value close to 1.25 times the panel short circuit current.

Consider the product catalog connection information
This Information and Plans Can Be Used Under the Condition of Engineering Control. Otherwise, All Responsibility Belongs to the Person Using Them.