RENOGY WANDERER SERIES
If you've connected 2 panels in series (40V) you probably have fried the controller. Your Wanderer ( assuming its ) can handle up to 25V. They also usually can't handle high PV voltages (since that doesn't make sense). The higher the input voltage, the less efficient the controller is. The PWM can't efficiently use the higher voltages since it doesn't regulate voltage, it regulates bursts. It does work fine for lead acid, those don't mind the short bursts and they have a self discharge so in the end everything is fine.Ī PWM works by either connecting the panelvoltage directly to the battery (using the panel's current limit to reduce the voltage), and disconnecting, where the connect/disconnect time varies depending on SOC.Ī higher panel voltage is basicly unused, it only causes, as you see, higher spikes. They do give a higher voltage (16-20V for a 12V panel) which is exactly what suits a PWM controller.īasicly, this is legacy solar charging, how they used to do it. This is also the reason why there are '12V' or '24V' solar panels on the market.
Pulsing is exactly the behavior of a PWM controller: Pulse Width Modulation.įor a PWM controller, to gain maximum efficiency, it's recommended to have the panel voltage as close to the cell voltage. It's a Catalina 22 so not much room for a ton of panels. Mine goes to Voc an aside, I have ordered a 40A MPPT and 2000w pure sine inverter to use with this battery at home while the boat is in storage over the off seasons but was planning on using the 10A wanderer and only one 100w panel on the boat.
RENOGY WANDERER INSTALL
If I install this system in my boat, am I going to be damaging my battery by hitting it with 20v all week while it sits in the marina between trips? Is it normal for a PWM to do this? I was reading the thread " What happens with excess production off grid?" ( ) And it seems that the understanding is that the panel should go to Voc 0.0A when the battery is full. My bigger convern is that the battery is supposed to charge at no more than 14.6v.
A minor annoyance is that this causes my cheap 750w inverter to cut out and alarm for overvoltage. I disconnected one panel but it still pulses about 20v at 0.4A. In testing this new system out at home, I have found that when the battery is full, the Wanderer begins pulsing 41v at 0.4A with two, 100w panels in series. I bought an Amperetime 200AH battery and a Renogy Wanderer 10A controller to charge it with. I have been running a few panels on my RV (3x 100w Renogy mono, 40A MPPT, 3x 110AH AGM) for several years and not really thinking about it but recently decided to build a more "well planned" system for my sailboat.
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