Solar Electrics

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25th June :: ML V=12.64⇖Y=1.25KWh
24th June :: ML V=12.71⇖Y=1.10KWh :: No plates showing and topped up with some .6Lt overall.
23rd June :: ML V=12.71⇖Y=570Wh :: Check electrolyte
22nd June :: ML V=12.66⇖Y=1.78KWh :: Check electrolyte
21st June :: ML V=12.65⇖Y=1.63KWh :: Check electrolyte
20th June :: ML V=12.67⇖Y=1.14KWh :: Check electrolyte
19th June :: ML V=12.67⇖Y=890Wh :: Check electrolyte
18th June :: ML V=12.66⇖Y=600Wh :: Check electrolyte
17th June :: ML V=12.71⇖Y=1.18KWh :: Check electrolyte
16th June :: ML V=12.75⇖Y=820Wh
15th June :: ML V=12.48⇖Y=1.47KWh
14th June :: ML V=12.69⇖Y=1.31KWh
13th June :: ML V=12.70⇖Y=460Wh
12th June :: ML V=12.71⇖Y=370Wh
11th June :: ML V=12.67⇖Y=410Wh
10th June :: ML V=12.67⇖Y=1.04KWh
9th June :: ML V=12.69⇖Y=1.24KWh
8th June :: ML V=12.51⇖Y=1.26KWh
7th June :: ML V=12.62⇖Y=660Wh
6th June :: ML V=12.62⇖Y=1.62KWh
5th June :: ML V=12.63⇖Y=1.10KWh
4th June :: ML V=12.63⇖Y=510Wh
3rd June :: ML V=12.64⇖Y=790Wh
2nd June :: ML V=12.67⇖Y=690Wh
1st June :: ML V=12.70⇖Y=1.52KWh

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31st May :: ML V=12.77   Y=1.23KWh :: Checked electrolyte no uncovered cells and used less than 2 LT
30th May :: ML V=12.7?⇖Y=940Wh :: 12.77 Check electrolyte
29th May :: ML V=12.70⇖Y=450Wh :: 12.77 Check electrolyte
28th May :: ML V=12.77⇖Y=1.33KWh :: 12.77 Check electrolyte
27th May :: ML V=12.71⇖Y=1.20KWh :: 12.77 Check electrolyte
26th May :: ML V=12.77⇖Y=580Wh :: 12.77 Check electrolyte
25th May :: ML V=12.72⇖Y=1.18KWh
24th May :: ML V=12.64⇖Y=1.15KWh
23rd May :: ML V=12.75⇖Y=1.26KWh
22nd May : ML V=12.75⇖Y=490Wh
21st May :: ML V=12.74⇖Y=510Wh
20th May :: ML V=12.58⇖Y=1.52KWh
19th May :: ML V=12.66⇖Y=1.56KWh
18th May :: ML V=12.63⇖Y=820Wh
17th May :: ML V=12.66⇖Y=720Wh
16th May :: ML V=12.64⇖Y=1.59KWh
15th May :: ML V=12.62⇖Y=1.90KWh
14th May :: ML V=12.64⇖Y=1.93KWh
13th May :: ML V=12.66⇖Y=1.94KWh
12th May :: ML V=12.59⇖Y=1.69KWh
11th May :: ML V=12.57⇖Y=1.64KWh
10th May : ML V=12.64⇖Y=1.71KWh
9th May :: ML V=12.59⇖Y=1.34KWh
8th May :: ML V=12.59⇖Y=1.09KWh
7th May :: ML V=12.58⇖Y=1.26KWh
6th May :: ML V=12.58⇖Y=1.52KWh
5th May :: ML V=12.66⇖Y=1.56KWh
4th May :: ML V=12.43⇖Y=1.70KWh
3rd May :: ML V=12.60⇖Y=1.07KWh
2nd May : ML V=12.39⇖Y=940Wh
1st May :: ML V=12.66⇖Y=570Wh

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30th April :: ML V=12.86 Y=870Wh Given ML @ 12.86 checked electrolyte, just caught a few cells used about 2Lt and turned charge down to 15/14

29th April :: ML V=12.79⇖Y=780Wh Given ML @ 12.79 better check electrolyte.
NOTE
27th Y = 1770 Use =160 | 28th ML =12.61
28th Y = 710 Use = 60 | 29th ML = 12.79
29th Y =780 Use =50 | 30th ML =12.86

28th April :: ML V=12.61⇖Y=710Wh
27th April :: ML V=12.64⇖Y=1.77KWh
26th April :: ML V=12.79⇖Y=590Wh Given ML @ 12.79 better check electrolyte
25th April :: ML V=12.66⇖Y=1.39KWh
24th April :: ML V=12.67⇖Y=790Wh
23rd April :: ML V=12.71⇖Y=1.20KWh
22nd April : ML V=12.63⇖Y=1.58KWh
21st April :: ML V=12.64⇖Y=1.90KWh
20th April :: ML V=12.67⇖Y=1.87KWh
19th April :: ML V=12.64⇖Y=1.85KWh
18th April :: ML V=12.65⇖Y=1.68KWh
17th April :: ML V=12.64⇖Y=1.34KWh
16th April :: ML V=12.41⇖Y=800Wh
15th April :: ML V=12.59⇖Y=880Wh
14th April :: ML V=12.63⇖Y=820Wh
13th April :: ML V=12.64⇖Y=1.01KWh
12th April :: ML V=12.83⇖Y=1.21KWh Battery 3 plates were exposed. Reduce charge voltage
100ml average battery cell top up.
11th April :: ML V=12.83⇖Y=2.04KWh Given ML @ 12.83 better check electrolyte
10th April :: ML V=12.71⇖Y=1.62KWh
9th April :: ML V=12.74⇖Y=740Wh
8th April :: ML V=12.59⇖Y=1.55KWh Low ML due to fridge being on yesterday !?
7th April :: ML V=12.79⇖Y=1.14KWh
6th April :: ML V=12.78⇖Y=1.74KWh
5th April :: ML V=12.78⇖Y=540Wh
4th April :: ML V=12.62⇖Y=920Wh
3rd April :: ML V=12.64⇖Y=1.45KWh
2nd April : ML V=12.72⇖Y=1.15KWh Only one solar panel connected until 10am GMT
1st April :: ML V=12.60⇖Y=1.39KWh Only one solar panel connected today

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31st March :: ML V=12.60   Y=1.92KWh
30th March :: ML V=12.64⇖Y=1.73KWh
29th March :: ML V=12.54⇖Y=1.87KWh
28th March :: ML V=12.58⇖Y=1.79KWh
27th March :: ML V=12.64⇖Y=1.90KWh
26th March :: ML V=12.59⇖Y=2.02KWh
25th March :: ML V=12.51⇖Y=1.73KWh
24th March :: ML V=12.50⇖Y=1.75KWh
23rd March :: ML V=12.51⇖Y=360Wh
22nd March : ML V=12.51⇖Y=600Wh
21st March :: ML V=12.52⇖Y=350Wh
20th March :: ML V=12.52⇖Y=460Wh
19th March :: ML V=12.69⇖Y=1.27KWh
Checked battery electrolyte level and all plates were covered. Added approx 2.2Lt ≈ 90ml per cell
The ML drops : see https://unveiled.info/solect/specific-gravity-1

18th March :: ML V=12.78 :: Y=560Wh Given ML of 12.78 will check battery electrolyte level
17th March :: ML V=12.51⇖Y=1.32KWh
16th March :: ML V=12.58⇖Y=220Wh
15th March :: ML V=12.66⇖Y=280Wh
14th March :: ML V=12.51⇖Y=460Wh
13th March :: ML V=12.39⇖Y=1.36KWh Incubator lamp all night
12th March :: ML V=12.44⇖Y=610Wh Incubator lamp all night
11th March :: ML V=12.44⇖Y=1.41KWh Incubator lamp all night and day
10th March :: ML V=12.43⇖Y=1.21KWh Incubator lamp all night
9th March :: ML V=12.47⇖Y=670Wh Incubator lamp all night
8th March :: ML V=12.44⇖Y=440Wh Incubator lamp all night
7th March :: ML V=12.47⇖Y=1.35KWh Incubator lamp all night
6th March :: ML V=12.36⇖Y=430Wh Incubator lamp all night
5th March :: ML V=12.48⇖Y=510Wh Incubator lamp all night
4th March :: ML V=12.30⇖Y=840Wh Incubator lamp all night
3rd March :: ML V=12.48⇖Y=190Wh
2nd March :: ML V=12.62⇖Y=460Wh
1st March :: ML V=12.50⇖Y=890Wh

2014

Fri 7th I connected one panel, via the Steca Controller, to one old battery. Used it as load battery and measure a use of 10Ah total.

Could see from the Steca the Asus 900 uses 1 amp

Sat 8th Since then I have 2 old 50w panels connected via the Steca to one old battery. The other old battery I have topped up with water, which was a bit iffy as it was a sealed battery. The six cells needed about a litre so hardly surprising it/they were almost unrechargeable.

That battery as end of day on the 9th was rated as 52% charged, by the next morning is was 48%

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Switched old battery. Bat I received 25Ah charge via Steca and was at 80% when disconnected.

Connected two old panels and one new REC max charge rate was 4.4 of 6.8 generated? Will fill with water tomorrow.

Bat 2, filled with water 2 week ago, was at 3% charged at connect. It rose to 12% at sunset, 15% by 2100 hours and 18% now at midnight. 19% at 0100 How ??????

At 0900 theSoC reads 23%??? and now at 1200 the sun is up but it is overcast 0.6A charge, 12.8v Soc 25%

Tue 2nd Dec 1140 Soc 54%

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2015
Jan 1st 2015 Soc 61% however the battery seems to be discharging quite rapidly down from 80% two days ago. I should check there are blocking diodes in the each of the two panels.

I have ended up buying two hydrometers. I first called Plymouth Battery Centre who informed me they had a glass model at £19 which I thought was a bit expensive so when I went to town I thought I'd look around before I took the mile or more walk to Prince Rock.

The Toolshed could get a glass model for £5 and the car shop next door had the same model for £2.99, which I bought. When I went to the Plymouth Battery Centre to buy some red and black covered multi-core cable I decided to buy the hydrometer they had anyway, which cost £14.50 eventually.

The better model from Plymouth battery Centre is the one on the left, although you cannot see the coloured scale. It is supplied by Gordon Equipments under the name DURITE model 0-070-00 ; range 1.15 to 1.40; accuracy 0.01. All parts are individually replaceable.

The difference in readings is notable.

Concerns regarding the cheapo

1. The float diameter is much smaller than the container diameter so the readings are at an angle.
2. On the side of the container the float rests, the surface tension of the acid draws the liquid further up the side of both, giving a distorted view.
3. The scale is on the small side so not so easy to read.
4. And of course there's the idea that the calibration is off.