I was just curious to find out the lowest wattage solar panel(s) that can be used to keep connected to the 200p? Kinda to keep it topped off. If that’s possible. Anyone know?
As long as you have 35 minimum volts from the panels, the watts won’t matter as long as you have enough to cover the overhead loss from being turned on. Form a practical standpoint, I would think a 40 watt panel or more would be a good start. The AC200P will be fine connected to larger panels long term since the charging will stop when full.
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what about those Harbor Freight Thunderbolt 100 watt panels?
You get what you pay for but you can connect several of those together and be satisfied if you are a “low expectations” type of customer.