On my Yeti I have two Boulder panels running in parallel with 100 watts each, which means 200 watts in total.

So far it's been running very well for about 6 months.

But you have to pay attention to the polarity, and of course I have connected the two panels in parallel and not in series.

If you exceed the maximum voltage, you will destroy your Yeti.

The Boulder Solar Panel delivers 18-22 volts.

If your panel is a 48 volt panel, it will not work.

Generally speaking, it is the voltage that is critical, not the amperage.

Volt times ampere = watt

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If your thing goes up in smoke, I don't give any guarantee!

Lead-acid batteries are a bit outdated, but today I would rather choose a lithium battery.

Because of the charging behaviour, the Ah value of lithium batteries is about twice that of lead batteries, i.e. a 10 Ah lithium battery is about the same as a 20 Ah lead battery. In addition, lithium batteries last much longer.

With lithium-ion batteries, the number of charging cycles is usually between 4,000 and 7,000 cycles. Lead batteries often only deliver between 1,200 and 1,500 cycles.

With lithium-ion storage batteries, the maximum depth of discharge is usually between 70-100%, with lead storage batteries only 50-60%.

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