• 7th Day

    **14th Jan**
    **10:30** battery was on Absorption at 15.67 volts though set Victron to 15.4 with a max current of 10A.

    Absorption time was exactly 2 hours, probably some dumb AI as the voltage and current would not have been consistently that high.

    Then on float at 14.4 though set to 14.15. Float uses 1A into 240Ah batteries ????

    **13:40** Having checked specific gravity, water level and temp I've increased the float voltage to 14.64 (VD measure at 14.91) This has increased the current from 1A to 1.5A (average per battery)

    **14:30** Clouds: Battery voltage 14.44 so gone to bulk charge. Have reset Float voltage to 14.05 Current is 1A (0.5 per battery): Disabled equalisation as it's useless at this time.

    **16:42** Sun setting and grey no charge from panels. Voltage gone down to 12.35. That the voltage is this low after appearing to have fully charged batteries at 14.4v. Implication that the voltage is high due to resistance not level of charge. **This may have been the continuing problem?**

    **20:56** Voltage at 12.31. This al least may mean that although the capacity is low and the charge resistance high it is notably better in having only dropped 0.04v in 4 hours.

  • 3rd & 4th Days

    **10 Jan**
    910W into batteries 1,2 1nd 3 Batt 4 at 81%

    **11 Jan**
    930W into batteries 1,2 1nd 3 Batt 4 at 94%
    Overrode float voltage for 2 hours to get 15v into battery

    Batteries hardly warm to the touch

  • 2nd Day Problems

    **9th Jan**
    Grey day so few photons. The problem I have is the inconsistent readings so see these screen shots taken from 15:13 over the next 6 minutes.

    The figures in the first image do not equate to those earlier in the day when I monitored. Then the max PV voltage was 33.4 and the max battery was 13.66 with a total wattage of 140. Not only do the figures differ but each time I viewed it I got different figures.

    <strong>Note also</strong> that the screen wiil not show all details vertically and there is no option to scroll.
    Call Nigel Vincent on 079402 44664 nvincent@victronenergy.com


  • Plymouth Battery Centre Test

    **14th -16th Jan 2018**

    I've just been informed that Batt4 is poor and has a 10% capacity, it was subsequently charged and discharged and I was told it now has 25% capacity. It is being charged again and I should pick it up this Thursday 18th

    My attempt to remedy will be to charge at 15.9v until the battery is hand hot on a good day seeing the charge current at 6amps for say 6 hours. This may have to be done four or five times to get 120Ah into a battery. Rolls states that 125&Deg; F or 51&deg;C is enough and if batteries reach that they need to be disconnected. This is around a temperate where it would be uncomfortable to leave the hand for a minute.

  • Specific Gravity Batt 1


  • Specific Gravity Batt 2

    **14th January** Battery on 1A float at 14.4v (see Victron Direct Comment 3 for charge data)

    **Reading from negative to positive terminal**

    ![](http://unveiled.info/media/blogs/solect/img/posts/batteries/sg_b2_20180114.jpg "null")