Basic battery charging and solar question
I have a Surveyor 245BHS with 2 6v batteries wired in series. The RV dealer told me that when I'm plugged in to charge, the trailer doesn't recognize when the batteries are fully charged and will kee...
Forum Discussion
webrx wrote:Amp-hours, not amps. 300 mA would seem to be an unrealistically large parasitic draw. What device(s) do you have which add up to that much?
if you have 300 ma parasitic draw you need to replace 7.2 amps a day (.3 x 24)
webrx wrote:??? Not sure how you make 15/2=1.25, or where any of those numbers come from. A 15 W "12 volt" panel would typically put out something less than 1 A at charging voltage (say, 13 V).
if you get 6 hours of good sunlight to charge you battery with, you theoretically (panel efficiency comes in here) need 1.2 amps charging an hour.
a 15 watt panel will put out 1.25 amps (15 / 2) again - theoretically
webrx wrote:Ah, you're talking about constant usage loads (like a refrigerator, or the switch which lights red when the water pump is turned on), not parasitic loads. That's completely different.
Reality, is a 40 to 50 watt is in my opinion the bare minimum you need to make up for parasitic loads and running the water pump for a couple showers, etc.
