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Outdoor & Recreation
Campers, Vans & 4WD's
Motorhome Solar Power System Issue
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<blockquote data-quote="blisters" data-source="post: 240742" data-attributes="member: 4992"><p>Your system used to work so assume for now it is sized ok. I wouldn't worry about your charger just yet. If your batteries are about 50% discharged then a 7 amp charger should have them back up to capacity in three days well within your two week minimum. These should be charged in parallel.</p><p></p><p>An extra battery won't fix the problem. Your issue is either battery condition, charge or discharge. As you have an amp meter on the batteries what is the discharge at night time? This will tell you if you have excess leakage than what you expect. For example one of your devices reverse current protection may have failed allowing discharge back through the unit e.g. mppt. Make sure the batteries are good by measuring the individual battery rest voltage after charge and overnight use. Leave four hours rest with each battery totally disconnected after overnight. Then it comes down to whether your system is charging enough and at 24 amps it sounds as though it's reasonable.</p><p></p><p>To me it sounds like either a battery failing or a current leak but you need to verify the easy bits first.</p><p>Jon</p></blockquote><p></p>
[QUOTE="blisters, post: 240742, member: 4992"] Your system used to work so assume for now it is sized ok. I wouldn't worry about your charger just yet. If your batteries are about 50% discharged then a 7 amp charger should have them back up to capacity in three days well within your two week minimum. These should be charged in parallel. An extra battery won't fix the problem. Your issue is either battery condition, charge or discharge. As you have an amp meter on the batteries what is the discharge at night time? This will tell you if you have excess leakage than what you expect. For example one of your devices reverse current protection may have failed allowing discharge back through the unit e.g. mppt. Make sure the batteries are good by measuring the individual battery rest voltage after charge and overnight use. Leave four hours rest with each battery totally disconnected after overnight. Then it comes down to whether your system is charging enough and at 24 amps it sounds as though it's reasonable. To me it sounds like either a battery failing or a current leak but you need to verify the easy bits first. Jon [/QUOTE]
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Outdoor & Recreation
Campers, Vans & 4WD's
Motorhome Solar Power System Issue
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