solar panel fridge battery,,do the numbers add up

Submitted: Friday, May 23, 2008 at 12:56
ThreadID: 57914 Views:4970 Replies:6 FollowUps:22
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hi i am measureing the current draw and frequency of my 55ltr fridge and allowing for night time,im trying to decide what size solar panel i should buy
the fridge uses 60w for 1/3 of the time
does that mean a 20w panel will do[oops allow for 50% darkness,40w panel or do the numbers not add up so simply ie it may be able to produce 40w but will it recharge the battery at a rate of 40w
remembering that it has to overcome the batteries voltage to charge will it only charge at a fraction of 40w and will i need a biger panel to maintain charge
thanks
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