? size solar panel
Folks: We would like to use a 12v deep cycle battery for topping off our 2 laptops, 2 kindles and cell phones. What size solar panel would be needed to keep the 12v battery charged/topped off. ...
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battery saver took over on battery, 60% @ sun up, took a few hrs this morning to get down to 6%/9minutes per battery icon info. 1 yr old Dell inspirin laptop, 40wh li batt, its first deep discharge.
Start 45w charger, display = 20w, pf .5, .32A, 39 VA
20w steady for 70 mins then 21w with taper.
Kill-a-watt changed from 0.03 to 0.04KWH @ 7w - 2 hrs 7 mins
0w @ 3 hrs 43 min, no data between!
previous 110w was never in sleep on ac power.
With solar as the maintainer it is hard for me to not go with PT and 100w needed / 100ah for top charge/equalize.
A 12v cig lighter charger is available.
Start 45w charger, display = 20w, pf .5, .32A, 39 VA
20w steady for 70 mins then 21w with taper.
Kill-a-watt changed from 0.03 to 0.04KWH @ 7w - 2 hrs 7 mins
0w @ 3 hrs 43 min, no data between!
previous 110w was never in sleep on ac power.
With solar as the maintainer it is hard for me to not go with PT and 100w needed / 100ah for top charge/equalize.
A 12v cig lighter charger is available.
