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External charging

External charging involves cross-charging, which means putting a positive charge on one battery and a negative charge on the other - then the charge goes through both batteries and is charged at the same time. Charging should be done with A up to 20% of the size of the battery bank
For example, 18Ah with >5A, 45Ah with >10A, 150Ah with >30A and 200Ah with >40A charging.
NOTE! If the error code C11 or CC1 has been shown in the display and external charging is done, the error code will be shown again. To restart the charger, about 5 minutes of voltage is required on the incoming pins 4 and 6 of the control unit (truck connected and lights on).

How long does a battery last? This depends on a number of different factors such as how much load they are subjected to (how much is plugged into the lighting path), how often they are used, how long it takes between recharges. You will find a calculation chart in the User Manual that gives an indication of the usage time at different loads.

How do I check the battery charge?The quickest check can be done via P-LIGHT's built-in TESTPROGRAM or with separate test equipment, also please check both batteries separately for a more accurate information.

The battery(s) do not hold a charge - why?Check how much load (number of watts) is connected and how often the P-LIGHT is switched on/off during the working day. Calculations can be found in the User Manual

Are there many short runs and stops during the work shift?If the answer is yes, this may cause the battery to not have time to recharge between uses of the P-LIGHT.

Why do the batteries discharge very quickly?See above.

Can I replace the batteries with another type than the original P-LIGHT?You should always use original spare parts for P-LIGHT because these products are developed and tested as a unit.

P-LIGHT cannot be switched on/P-LIGHT extinguished (lights up briefly) even though there is enough charging in the batteries?

Tip: Make sure that there is no parallel connection between pins 4 and 5 and 6 and 7 - which there must not be.

During this test, the lighting of the truck must be switched off. Disconnect the wiring harness on the 4th and 6th terminalblock. Measure voltage on the 4th and 6th cabling, they must be de-energized. Turn on the P-LIGHT lighting, measure the voltage on the 4 and 6 again, if there is any voltage then there is a parallel connection, troubleshoot and correct this misconnection, measure again. Then plug in the 4th and 6's cabling again, then the P-LIGHT lighting should work.

Tip: Never test the P-LIGHT with a battery charger as the charging voltage in such a charger can cause current spikes that damage the electronics.

Tests must always be done with connected vehicles.

Test of batteries: Test the batteries each together.

If there is a difference on one of the batteries, both batteries should be replaced so that no fault with the function of P-LIGHT will occur, the batteries are included in the device in pairs and exchange only a battery can damage P-LIGHT's function.