2018 greetings to all.......i have a query, any hints / tips on battery and solar panel combo that would easily run engel fridge / freezer during daylight, and have battery fully charged to run overnight.
thanks..
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If you aim for nothing.....you'll hit it every time.
Click on Solar section ^^^ Above there is plenty combinations there . 250 watt solar will work with 100 Ah battery .Be warned !! You usually up grade or use more . With TV etc .
As and example- we towed our new 11ft homemade van around Oz.
100amp battery, 120w roof solar, waeco cf18 small chest fridge. At night a cpap for 8 hours. Not much else.
It was not enough. At mt Isa purvhased a mobile panel. Plugged it in after 3pm each day, not enough. Mounted that panel to the drawbar (90W) so it was working all day evrryday. No problems.
Soon I'll ne building another van. We'll have 100amp battery, 250w roof solar, 90w mobile solar and 12v redarc 112 solonoid from the car. If all else fails on cloudy days while static just idle the car 40 minutes.
Cheers Tony
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Be nice... if I wanted my school teacher here I would have invited him...
hi jab160, Idealy 200watts or greater per 100ah battery
Its best to only use 50% batt capacity
basically 160 minimum approx. 38ah per day production , only reason to use this panel is either weight /cost /size typically 200watts approx. 48ah production per day as a portable a little cumbersome [u are only carrying 10-15mtrs !!] 250 watts would cover your consumption easy .
Carefull brand selection of panels as the sq mtr/ area size is often smaller in ""cheaper"" panels . This is another reason why u buy a little bigger than u need . Some are approx. 50 watts smaller but still advertised as a larger panel .
There are even 300watt bi folds if that interests u .
-- Edited by swamp on Friday 5th of January 2018 08:48:09 PM
50Ah of lithium and a 200w panel would do the job if the sun comes out every day, 100Ah of lithium and the same 200w of solar and you can last through 3 days of rain. If you use a battery built up from single cells you can add to it later to increase the capacity if you want because quality lithium cells do not suffer any degradation by adding new cells with old cells
but
you can not buy a 100Ah monoblock (looks like a normal car battery) and later add a second 100Ah monoblock battery later, you would have the same problems as mixing old lead acid batteries with new lead acid batteries.
I would recommend either 2 x 100w panels or 3 x 60w panels, shade effect is reduced by using multiple panels rather than one big panel.
T1 Terry
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