vascout
I have a Generac 0052500 serial number 4832297. A few months ago the battery stopped charging. I can charge it with a car battery charger and it runs great.

I have run through the trouble shooting guide, I noticed that the voltage at the transformer was supposed to be approximately 16VAC, I am getting 21VAC is there a high threshold or is this OK?

Is there a way to do a bench test on the battery charging module, mine says it needs a GEN-0A18010SRV ASY, ENG BATT CHARGR.

I don't want to waste money buying a part or parts that may be OK

Thanks in advance
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MEC
When posting please use the whole SN and don't hide any numbers. It's not helping us or yourself one bit.
Just so you know, there's no personally identifiable info when looking these up. Only the installing/activating dealer would of had access to that info.
The SN is crucial as there have been many revisions on various units over the years. I can only see from the model number that it's a centurion 16kW unit possibly packaged with a 16circuit transfer switch. Other than that......
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vascout
Sorry just habit on the serial number. I edited it
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MEC
You mentioned a high secondary transformer voltage, what is the utility voltage?
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vascout
I am pretty sure it was normal. 238 sticks in my mind.
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MEC
That 16V AC would be measured with 240V on N1 & N2 if higher I would suspect a higher utility voltage.
The battery charger output test would be to confirm 2.5A DC across wire 13 after disconnecting the neg batt cable and then reconnecting it.
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vascout
I have it back together, but i just measures utility at an outlet and got 120. This would give be 240 at the transformer.

I will check after I tear it apart again.
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vascout
I double checked and got no amperage out of the charger.

I checked and I have 241 utility. What is the high allowable voltage for this transformer?

Could the 21-22VAC secondary voltage have fried the Battery Charger.

Do both parts need to be replaced.
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