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Connected the battery lead terminals the wrong way round

Hi,

Could you please help me with a problem I have created on my golf trolley.  I connected the battery the wrong way round . It blew the fuse which I replaced but everything is now dead. Clearly I have blown something more.?

Is this liable to be the controller and could it have damaged anything else.

Do hope you can help…

 

BATTERY TERMINALS CONNECTED WRONG WAY ROUND

Having come across this once before although it was a few years back and difficult to remember exactly what got damaged. I believe both, the controller which took the hit on this one but it also took out the handle circuit board and LED display. Hopefully, it shouldn’t affect the speed control switch and the golf trolley battery lead should be OK if had not overheated,  Damage to the battery lead happens occasionally when the battery lead gets a tug at some point, sometimes it can happen from forgetting to take the plug off before removing the battery or in transport.

There are still battery leads available

CHECKING AND TESTING CONTROLLER
First thing to check is the the controller function and this, unless you have a test bench set up, then there are only two ways to get an idea if the golf trolley controller box is not working or damaged. These two methods are not a very conclusive method of testing the controller but putting an ear near it, then switching the power drive on at the wheels you should hear a click from the controller. The other method is smelling the controller itself for any burnt smell.

CHECKING AND TESTING HANDLE CIRCUIT DISPLAY (PCB)
Checking the LED handle circuit board; a damaged controller can affect the display and/or LED in various ways. Normally a circuit board malfunction can show a number of faults. Sometimes the numbers display end up corrupted, and /or the buttons don’t function, and / or seemingly no power at the display circuit, and / or no reaction from turning the speed knob.

RECOMMENDATION
The battery lead connector can sometimes cause other problems with the trolley, so it is always recommended to make sure the lead is working well.  Sometimes it is difficult to determine if the battery cable is causing faults as it looks as if it is taking the charge to the battery no problem but when asked to deliver a greater current this is when it shows the connection is not good enough.  We would recommend changing the battery cable if it looks corroded in any way.  As for the both the electric golf trolley controller and circuit as damage can occur if one or other part is damaged itself and replacing one only can damage the other component again. Meaning a damaged controller and replacing the a circuit board alone can blow the new replacement circuit board. Or vice versa with the circuit board