• The batteries arrived today with the MPPT and have been installed. It was late in the day before I had finshed and initially the controller went to bulk then abs.

    The first thing I did was to make a stainless steel backplate to fasten the controller to and use copper and plastic tubing to keep it off the wall, only a centimetere or so.

    I have also connected the 1200w inverter, but there is no other loading.

    Layout of supply and controls

    Layout of supply and controllers

    May 7th Battery voltage of the 2 x S6 145's in series was 12.76. The electrolyte was high in one cell so I distributed it amongst all six.

    Cable from MPPT to batteries is approx AWG 8 or 8.4² (50 amps)

    Could do with
    See https://www.altecautomotive.co.uk/25mm2--4-awg-automotive-cable-17000amp-2040watts-rated-various-colours-available-375-p.asp

    May 9th Electrolyte levels are fine

    Measured the SG.

    May 13th Must use VE Direct USB to set up MPPT and equalise.

    June 17thHave fitted a fuse box to inverter output and wiring from there to a) 6A fuse to wiring for sockets to a double socket about the workbench, a double socket by the computer platform and wire to a further socket by the steps. b) 16A fuse for cable to external socket and c) Unfused to a 3 gang row above the electric work bench.

    So for power to any 1) switch on inverter, 2) switch on fuse box.

    I will not be making a spreadsheet of input and output for a while.

  • Yeap! have bought Rolls again, this time direct from Barden UK. They also supplied the Victron controller. I have bought 2 off Rolls S6 145 (250Ah @ 20Hr) and 1 off Rolls S12 27 (105Ah @ 20Hr)

    A major factor in choice is weight. I only want around 30Kg to lift. The previous HT 31 was 27.5Kg.
    The new S12 27, which is one size down from the S12 31 (Prev HT 31) weighs 24.5 kg and the S6 145 is 32Kg

    Details for S6 145



    Had to make temporary handles to move them ??




    Detail to see on battery specs :-: See Comment 1 for explanation of ADVANCED NAM


    Rolls S6 145 – 6V Series 4000 Battery < £193.49 : 3 Years Warranty

    Physical Specifications

    Weight: 32 kg ~ 70.5lbs | Length: 25.9 cm ~ 10.19″ | Width: 18.1 cm ~ 7.13″ | Height Inc. Term: 29 cm ~ 11.4″
    Volts: 6 | BCI: GC2H | Cells: 3 | Plates/Cell: 17
    Terminal Type DT
    Included Hardware S/S Hex Cap Screw, Nut, Lock & Flat Washer
    Size & Thread 5/16″-18 x 1-1/2″

    Electrical Specifications
    Cold Crank Amps (CCA) 0°F / -17°C 710 Marine Crank Amps (MCA) 32°F / 0°C 888 Reserve Capacity (RC @ 25A) 484 Minutes Reserve Capacity (RC @ 75A) 127 Minutes

    Charge Voltage Range 2.45-2.5 V/cell @ 25°C (77°F)
    (7.35 to 7.5 for 6v battery or 14.7 to 15 for two in series)
    Float Voltage 2.25 V/cell @ 25°C (77°F)
    (6.75 for 6v battery 13,5 for two in series)

    Recommended Charge Current Capacity (String) 30 A
    Maximum Charge Current (String) 50 A
    Self-Discharge Rate 5%-10% per month at 25°C (77°F)

    Hour Rate Capacity : AMP Hour : Current / AMPs
    @ 100 Hour Rate 320 AH 3.2 A | @ 72 Hour Rate 315 AH 4.38 A | @ 50 Hour Rate 298 AH 5.95 A
    @ 20 Hour Rate 250 AH 12.5 A | @ 15 Hour Rate 238 AH 15.83 A |@ 10 Hour Rate 220 AH 22 A
    @ 8 Hour Rate 215 AH 26.88 A | @ 5 Hour Rate 198 AH 39.5 A | @ 1 Hour Rate 100 AH 100 A

    Amphere hour capacity ratings based on specific gravity of 1.280.
    Reduce capacities 5% for specific gravity of 1.265 and 10% for 1.250.


  • To reduce voltage drop of 12v to the main cabin I an installing a 10mm2 ring-main, that is cable going in both directions around a room, from the fuse box, giving a sum of 20mm2 conductor for both negative and positive lines.

    1. I've bought the cable and 24 off 10mm x 6mm crimp terminals from
      Torberry Connectors at cost of £102.55 inc P&P
      The pink and grey surrounding the copper are the actual covering. The darker red and black is the transparent overlay, which you can see by the join.
      10mm twin flexible cable
      10mm twined flexible cable.

      I bought a Weller 40w soldering iron and although it can heat the crimps enough to melt solder it cools to quickly for the 10mm cable to settle in so i had to crimp too :(
      10|6 terminals
      10|6 crimp terminals
    2. As I am going to run spurs from the ring-main I am using stand-alone post terminals to which I can fix multiple wires each. I have bought 6 red and 6 black from 12voltplanet.co.uk, hence the 36 lugs mentioned above. I will make boxes to house the terminals as I progress. Cost £57.47 inc P&P
      6mm_studs
      6mm studded terminal posts
    3. I am also replacing the main cables from the MPPT to the batteries and from the batteries to the fuse box with 16mm2 cable and for which I will use 16|8 crimps for the battery connections (4 off) and 1 off 16|6 for the fuse box
    4. To mange the heavy cable I have bought a wire cutter (£33.23) and cable stripper (£20.50) from Farnell
      Bacho 10mm wire cutter and Knipex 7AWG Stripper
      Bacho 10mm wire cutter and Knipex 7AWG cable stripper

      Both arrived around midday 11th Nov but the Nipex stripper is all but useless.
    5. Have ordered 16|8 and 16|5 crimp terminals and 2 each of 15A and 30A fuses from 12voltplanet, pity I didn't get it together for one order (P&P etc.)
    6. Ordered 4m of red and 3m of black16mm2 from Batteries and Solar, Plymouth
  • Victron Direct

    V5.35 5th November 2020 :: Firmware 1.54
    V5.34 22nd October 2020 :: Firmware 1.53
    V5.32 24th September 2020 :: Firmware 1.50
    V5.31 1st September 2020 :: Firmware 1.50
    V5.30 8th August 2020 :: Firmware 1.50
    V5.29 5th August 2020 :: Firmware 1.50
    V5.27 3rd August 2020 :: Firmware 1.50
    V5.25 20th June 2020 :: Firmware 1.50 Download but no updated version numbers
    V5.25 26th May 2020 :: Firmware 1.50
    V5.24 23rd May 2020 :: Firmware 1.50
    V5.23 22nd May 2020 :: Firmware 1.50
    V5.22 19th May 2020 :: Firmware 1.50
    V5.21 18th May 2020 :: Firmware 1.50
    V5.19 6th April 2020 :: Firmware 1.46 Download but no updated version numbers
    V5.19 20th February 2020 :: Firmware 1.46
    V5.18 16th February 2020 :: Firmware 1.46
    V5.17 5th February 2020 :: Firmware 1.46
    V5.15 22nd December 2019 :: Firmware 1.46
    Update downloaded but no change
    V5.15 13th December 2019 :: Firmware 1.46
    V5.13 5th November 2019 :: Firmware 1.46
    V5.13 30th October 2019 :: Firmware 1.42
    V5.9 15th September 2019 :: Firmware 1.42
    V5.9 11th September 2019 :: Firmware 1.39
    V5.8 18th July 2019 :: Firmware 1.39
    V5.7 9th May 2019 :: Firmware 1.39 :: Manual download and install successful.
    V5.7 8th May 2019 :: Firmware 1.39 :: Download failed as a file could not be extracted from the zip
    V5.6 7th May 2019 :: Firmware 1.39
    V5.5 2nd May 2019 :: Firmware 1.39

    V5.4 9th March 2019 :: Firmware 1.39
    V5.3 12th February 2019 :: Firmware 1.39
    V5.2 on 9th January 2019 :: Firmware 1.37

    V5.1 on 5th July 2018:: Firmware 1.37
    V4.8 on 5th July 2018

  • Morning Low ::12.63 | < 12.63 | < 12.39 | < 12.03    
    Yield :: 900 | 540 | 230 | 100 | 90
    Morning Low is the voltage before any use, maybe before sunrise :)
    Yield is the power used including the inverter. ~  I  Indicates Inverter Use (Fridge + +)


    31st October : ML V=12.47   Y=240Wh
    30th October : ML V=12.51Y=50Wh
    29th October : ML V=12.55Y=50Wh
    28th October : ML V=12.59Y=140Wh
    27th October : ML V=12.59Y=220Wh
    26th October : ML V=12.67Y=470Wh   I 
    25th October : ML V=12.51Y=300Wh   I 
    24th October : ML V=12.67Y=30Wh
    23rd October : ML V=12.67Y=150Wh   I 
    22nd October: ML V=12.56Y=180Wh
    21st October : ML V=12.63Y=100Wh
    20th October : ML V=12.76Y=100Wh
    19th October : ML V>12.36Y=170Wh
    18th October : ML V=12.67Y=530Wh   I 
    17th October : ML V=12.71Y=260Wh   I 
    16th October : ML V=12.67Y=750Wh   I 
    15th October : ML V=12.63Y=610Wh   I 
    14th October : ML V=12.55Y=640Wh   I 
    It seems the USBA to USBmicro cables i have do not transfer data and the converter is recognised by windows device manager ~ so all working :)

    13th October :: OK have USB access, and have downloded details
    12th October :: Still no USBA port access, so no access to data.
    ^
    4th October ::: Still no USBA port access, so no access to data.
    However battery electrolyte is fine.
    3rd October ::: Toshiba computer not working so no access to data.
    2nd October :: Toshiba computer not working so no access to data.
    1st October ::: Toshiba computer not working so no access to data.

  • Morning Low ::12.63 | < 12.63 | < 12.39 | < 12.03     Yield :: 900 | 540 | 230 | 100 | 90
    Morning Low is the voltage before any use, maybe before sunrise :)
    Yield is the power used including power via the inverter. ~  I  Indicates Inverter Use (Fridge + +)


    30th September Toshiba computer not working so no access to data.
    29th September Toshiba computer not working so no access to data.
    28th September : ML V=12.63Y=140Wh
    27th September : ML V=12.75Y=1.19KWh   I 
    26th September : ML V=12.59Y=790Wh   I 
    25th September : ML V=12.67Y=1.03KWh   I 
    24th September : ML V=12.63Y=400Wh   I 
    23rd September : ML V=12.75Y=280Wh   I 
    22nd September: ML V=12.52Y=160Wh
    21st September : ML V=12.78Y=1.08KWh   I 
    20th September : ML V=12.66Y=770Wh   I 
    19th September : ML V=12.79Y=530Wh   I 
    18th September : ML V=12.82Y=1.08KWh   I 
    17th September : ML V=12.66Y=1.19KWh   I 
    16th September : ML V=12.90Y=810Wh   I 
    15th September : ML V=12.71Y=300Wh   I 
    14th September : ML V=12.83Y=1.17KWh   I 
    13th September : ML V=12.78Y=1.02KWh   I 
    12th September : ML V=12.83Y=560Wh   I 
    11th September : ML V=12.76Y=190Wh   I 
    10th September : ML V=12.67Y=780Wh   I 
    9th September ::: ML V=12.86Y=270Wh   I  12.86 Didn't use any electrics yesterday after dark.
    8th September ::: ML V=12.74Y=480Wh   I 
    7th September ::: ML V=12.71Y=400Wh   I 
    6th September ::: ML V=12.70Y=790Wh   I 
    5th September ::: ML V=12.74Y=510Wh   I 
    4th September ::: ML V=12.40Y=230Wh   I  12.40 Using until 2am and not up early enough to see ML so the reading is 'the morning low not my use of term as the voltage before activated by sunrise.
    3rd September ::: ML V=12.71Y=190Wh   I 
    2nd September :: ML V=12.67Y=160Wh   I 
    1st September ::: ML V=12.78Y=880Wh   I