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Kelly Armfield avatar image

Charge Controller MPPT-150-70 Algorithm USER setting

I’m using a BlueSolar Charge Controller MPPT-150-70. A few months ago I upgraded the software version to 2.05 (from 2.00). The charge algorithm has always been set to ‘USER’, and I have always set the absorption time to 2 hours (flooded lead acid batteries). Since the software upgrade the absorption time varies and it seems the algorithm is adaptive rather than fixed because it is not observing the pre-set absorption time, even though I have selected ‘USER’ and reset the absorption time to 2 hours. Can anyone suggest a possible cause and solution please?

Thanks in advance.

charge controller error
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2 Answers
Kelly Armfield avatar image

Thanks for your comments. I'm running the v2.05 firmware and suspect this may be the issue. Where can I obtain an earlier version, say v2.00?

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Paul B avatar image

Hi, There has just been a release of a new firmware version 1.41 ,its got a lot of fixes arond these areas of operation.

Please upgrade and see if this helps

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2.05 is the latest listed version for the VE.Can models. How that fits in the scheme of things I have no idea.