Negative aH?

[Leo Hernandez July 25, 2017 at 3:54 pm Post count: 0]

#19835 Reply |

This is in regards to the following unit:
DROK DC 0-120V 0-100A Digital Multimeter
https://www.amazon.com/gp/product/B01M5CWR2P/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

I’m using this in an RV application to monitor my battery.

When I’m charging the battery, the aH indicator counts down. This is expected and I understand why this is – it’s like showing me my “tank is being filled up.” What I don’t understand is why the aH goes into the negative. And if I stop the charging when its in the negative (and start using the battery again), its starts count the aH from the negative (not from zero). So if I start at -2.0 aH, by the time I am at 0 aH, I actually used 2 aH. So my battery level has been used by 2 aH, but the display will only show 0 aH used.

Can you explain why this goes into negative aH?

[DrokKeymaster July 27, 2017 at 9:54 am Post count: 2971]

#19876 Reply |

Hello Leo Hernandez,
Thanks for writng in.
Regarding to this problem, we have stated it in manual.
I f the battery still can be charged, the value will continue to decrease to negative value. You can find more details from instruction.
manual
Best regards.

[Author]

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