Another Miboxer c4-12 question

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flphotog
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Another Miboxer c4-12 question

I’ve had no issues with my c4-12 that I’m aware of but given all of the questions about this charger I just tested the open circuit voltage on all four slots.

Slots 1-3 all read 4.96 volts but slot 4 read 4.85 volts, anyone have any idea what would cause this and weather it can be a problem or not?

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flphotog
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No one has responded, Miboxer has sent me a replacement but it has the same symptom as the first one. I’m just trying to find out if this is normal or not. Can someone please measure the open circuit voltage and tell me what the reading is on their charger?

Thanks

flphotog
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I received an answer from Miboxer as to way slot 4 has a lower voltage.

Pete7874
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Mine does the same thing. I think the reason for lower voltage on slot 4 may be due to additional circuitry wired there to support the USB power bank function. I dont think it affects charging performance in any way.

flphotog
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Pete7874 wrote:
Mine does the same thing. I think the reason for lower voltage on slot 4 may be due to additional circuitry wired there to support the USB power bank function. I dont think it affects charging performance in any way.

That’s what they eventually told me but in the mean time they also sent me a new charger, so now I have two of them.