MonsterMoto 1000w eating chargers

[incorvaiaa]

I have a monster moto 1000w that I bought for my kids 2 years ago. I had to replace the charger out of the box. Worked fine for 1+ years. Recently blew the charger abd fuse. Replaced with an aftermarket charger from monster scooter parts, changed the fuse and the unit (charger) after charging for approximately 20 minutes, blew up and started smoking. The battery still has a charge and runs so I assume the controller is OK. Could it have just been a bad one controller or a is something else happening? I would hate to buy another charher without fixing cause to have it blow again.

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[incorvaiaa]

I have a monster moto 1000w that I bought for my kids 2 years ago. I had to replace the charger out of the box. Worked fine for 1+ years. Recently blew the charger abd fuse. Replaced with an aftermarket charger from monster scooter parts, changed the fuse and the unit (charger) after charging for approximately 20 minutes, blew up and started smoking. The battery still has a charge and runs so I assume the controller is OK. Could it have just been a bad one controller or a is something else happening? I would hate to buy another charher without fixing cause to have it blow again.

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[amberwolf]

When fuses blow, it means something drew more current than the fuse was rated for.

What is the fuse rating? Where in the circuit is the fuse? Is it in the charger, or just in the line between the charger and the battery?


Did anything get warm or hot during charge? (that indicates where the extra power is going as heat)

The two most likely problems are a battery defect that actively pulls more current than it was designed to, or a wiring fault that is shorting the charging input together.


A wiring fault like that should drain the battery to zero, so since you see a charge on it, that's unlikely.

But it is possible for a battery to have a fault that when it rises above some voltage it then begins to draw more and more current, more than it should be able to.


What kind of battery is it? SLA? (lead) Some type of lithium? etc?

 

[incorvaiaa]

I believe it is a standard battery. 36 volts. Fuse is in line between charger and battery. Sounds like I should replace the charger and battery. Yes wires look good and battery is holding a charge and runs the bike. Just seems to be a charging issue. What you said makes sense because there charger blew after the battery was fully charged.

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[amberwolf]

There isn't any "standard" kind of battery; there are several common types. Some, like SLA, are just blocks of battery, so not much to go wrong with them. Some, like most of the Lithium types, have electronics in them to manage charge and discharge, and sometimes those fail, though not usually in ways that could blow up a charger.

Did the battery stay fully charged after the charge finished? Or did it discharge by itself?

If the former, then it's unlikley the battery or wiring has a fault.

If the latter, then there could be a fault, probably inside the battery.


If it's not the battery or wiring, it *could* be the charge connector on the scooter--if it has loose parts that sometimes touch, especially during plugging in or unplugging the charger, it's possible that those could short positive and negative, which would blow the fuse (preventing battery discharge or fire), and also blow up the charger if the charger itself has no fuse on it's output.

 

[jackbauermmm]

Please let me know how everything turns out. I bought 2 chargers for my monster moto 1000w and they both stopped charging my bike. Monster moto was very kind enough to send me a new one (the 2nd one that stopped working) no charge (also no pun intended). so ill open one of them to see if there is a fuse and see if i need to get one that is more accommodating. Edit: I just opened up the charger and there is no fuse in there. So I'm not too sure what went bad. I looked at all the capacitors and they dont seem to be burned or popped. Not sure what to do now...

 

[incorvaiaa]

I have not solved the problem. Chargers keep blowing. I was told to load test the battery which I haven't had a chance to do yet. But I tried two different battery sets. I replaced the controller. Only things that have not been replaced are the throttle controller and the charging port. Throttle controller works so I can't Imagine there is a problem with it. Charging port is basic 3 prong port. I don't know what else to do. Maybe the new (aftermarket) chargers are reverse wired?

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[999zip999]

What kind of battery ?

 

[incorvaiaa]

36 volt. Closed cell (alarm style) 12 volt batteries connected in series. Battery wire has a fuse, but charger goes through the controller, not directly to the battery

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