LUNA CHARGER 52V ADVANCED 300W Trouble

Batteries, Chargers, and Battery Management Systems.
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Oluwali19   10 µW

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Joined: Jan 29 2021 2:55pm

LUNA CHARGER 52V ADVANCED 300W Trouble

Post by Oluwali19 » Jun 05 2021 6:47pm

my Luna charger Isn’t putting out a proper voltage when plugged in to a socket. instead of 58.6V i’m getting 0.01 or 0.02V (alternating). It’s an older charger. Is garbage or fixable? Thanks in advance.
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john61ct   100 GW

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Re: LUNA CHARGER 52V ADVANCED 300W Trouble

Post by john61ct » Jun 06 2021 2:15am

Have you got the output going into a depleted battery?

What voltage shows on its posts when isolated?

Oluwali19   10 µW

10 µW
Posts: 6
Joined: Jan 29 2021 2:55pm

Re: LUNA CHARGER 52V ADVANCED 300W Trouble

Post by Oluwali19 » Jun 07 2021 10:56am

john61ct wrote:
Jun 06 2021 2:15am
Have you got the output going into a depleted battery?

What voltage shows on its posts when isolated?
I’m completely new to electronics in general, sorry. I removed the three-prong plug, leaving only a blue and wire a yellow wire exposed (i was going to scrap it for parts later). so at the moment i cant connect it to a battery. Do I need a multimeter?

john61ct   100 GW

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Re: LUNA CHARGER 52V ADVANCED 300W Trouble

Post by john61ct » Jun 07 2021 11:12am

How are you measuring the voltage now?

A DMM is usual, but there are hundreds of ways to measure voltage, just needs to be accurate.

An ammeter also.

You cannot say anything about a charger without a depleted battery to test with.

Ideally without a BMS in the way, just directly to the cells.

If you really are a complete beginner, maybe get someone local to help mentor you, protect you from the danger inherent in mucking around at high voltages.

Oluwali19   10 µW

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Posts: 6
Joined: Jan 29 2021 2:55pm

Re: LUNA CHARGER 52V ADVANCED 300W Trouble

Post by Oluwali19 » Jun 07 2021 4:21pm

john61ct wrote:
Jun 07 2021 11:12am
How are you measuring the voltage now?

A DMM is usual, but there are hundreds of ways to measure voltage, just needs to be accurate.

An ammeter also.

You cannot say anything about a charger without a depleted battery to test with.

Ideally without a BMS in the way, just directly to the cells.

If you really are a complete beginner, maybe get someone local to help mentor you, protect you from the danger inherent in mucking around at high voltages.
Is ammeter separate from a multimeter? I’m just wondering if anyone with the same charger was able to diagnose and fix theirs. I’m willing to work with insulated gloves and take everything very slow if you have suggestions since I don’t know any EEngineers. Also Luna has a shortage so it’d be great to know.

john61ct   100 GW

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Joined: Dec 18 2018 2:06pm

Re: LUNA CHARGER 52V ADVANCED 300W Trouble

Post by john61ct » Jun 07 2021 8:05pm

Luna has a shortage of what?

Yes an ammeter measure current.

Some are a superset of the DMM features.

What makes you think your charger is broken?

You need to get the gear to test it before you can say that.

None of this is "engineer" level stuff, an EV or RC hobbyist, a basic bike shop that does eBikes, even a high school kid that's fiddled with DC electronics, say car audio rigs

can help you get started.

The key is hands-on over the shoulder collaboration if your google-fu isn't up to teaching yourself online.

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