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Facts and Infos about the Opus BT-C3100 Charger
#21
Thanks Cherry, added it.
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#22
Sorry, a second info i can give:
https://secondlifestorage.com/t-Kelvin-m...Resistance
On the first page a little down, a detailed comparison between a B6AC IR Measurement and the same on the Opus, showing that even with wire mod the IR can be far ( 3 times ) off from a real value, especially on low IR.

Conclusion is, that the (two) contact resistances come into the same region as the Cell IR, plus they are unstable and not repeatable.

Update, re below Post :
Sorry, have not seen that.
1 kWp in Test
4 kWh battery target - plus Mobile Home battery
Ultra low cost
Electronics ? No clue. Am machinery engineer.
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#23
(02-17-2019, 03:55 PM)LEDSchlucker Wrote: Facts:

Already added this link since the beginning...
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#24
I did a bit of analysis of how the Opus works for those who are interested. Also have oscilloscope traces I took of the current waveforms, but I haven't processed/uploaded those: http://rev0.net/index.php?title=Opus
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#25
(02-20-2019, 08:35 AM)daromer Wrote: Dont put a fan om top over the cells. Cooling should be under the Opus or om the back

The objective was to trick the over-sensitive at room temperature senor.
The cells I put in cannot overheat because they are pre-tested before capacity measurement, so practically there is no OH danger.
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#26
I have what appears to be a dead C3400. Is there any way to revive it? I've tried a higher amperage 12v power supply to no avail. It started phasing out on the screen before going tits up and I read the bricks could be an issue so I went overkill with a 12v 8a but no display. Just the fan spins up.
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