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Motorhome Solar Power System Issue
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<blockquote data-quote="PabloP" data-source="post: 240589" data-attributes="member: 4430"><p>Fluffy, to start with there is something way out of whack with your microwave info of 150amps, as that is way over what a microwave uses, 5 amps would likely to be closer to the figure for a decent microwave, so it could be that there is something screwy with the measurement system or process.</p><p></p><p>You seem to have a decent sized battery bank at almost 400ah, and the solar bank seems ok at 300w, but a bit low to bring the batteries up timely if they have been significantly discharged. I aim for full charge by noon on a normal sunny day.</p><p></p><p>That inverter is a big one, and they are inefficient beasts, but if only running for the microwave that shouldn't be causing the problem.</p><p></p><p>Remember that the lower a battery bank is discharged and the frequency and depth of the discharge impacts the battery life.</p><p></p><p>Do you have the batteries boosted from the vehicle alternator as that would normally give a good charge is driving for a few hours.</p><p></p><p>I suspect that one or both of the batteries are faulty, but without some independent testing is required, versus what the built in monitoring system is showing as I am concerned that it is providing data that should be questioned.</p><p></p><p>You need to measure the current drain during the day and the night, to try and determine what is causing the excessive voltage drop. </p><p></p><p>Rob.</p></blockquote><p></p>
[QUOTE="PabloP, post: 240589, member: 4430"] Fluffy, to start with there is something way out of whack with your microwave info of 150amps, as that is way over what a microwave uses, 5 amps would likely to be closer to the figure for a decent microwave, so it could be that there is something screwy with the measurement system or process. You seem to have a decent sized battery bank at almost 400ah, and the solar bank seems ok at 300w, but a bit low to bring the batteries up timely if they have been significantly discharged. I aim for full charge by noon on a normal sunny day. That inverter is a big one, and they are inefficient beasts, but if only running for the microwave that shouldn't be causing the problem. Remember that the lower a battery bank is discharged and the frequency and depth of the discharge impacts the battery life. Do you have the batteries boosted from the vehicle alternator as that would normally give a good charge is driving for a few hours. I suspect that one or both of the batteries are faulty, but without some independent testing is required, versus what the built in monitoring system is showing as I am concerned that it is providing data that should be questioned. You need to measure the current drain during the day and the night, to try and determine what is causing the excessive voltage drop. Rob. [/QUOTE]
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Outdoor & Recreation
Campers, Vans & 4WD's
Motorhome Solar Power System Issue
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