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Solar · BLUETTI

Solar panels for the BLUETTI EP500Pro

Written by Ian Schneider·Solar & Off-Grid Tester

No single panel we track will start the EP500Pro. Its solar input wants at least 55 volts before charging begins, and the tallest panel on our list, Renogy's 590 W rigid, prints 52.63 on its label. That label figure is the open-circuit voltage, Voc, the most a panel ever shows, with nothing connected. Panels go in series here, the lead from one panel into the next, so their voltages add while the current stays at one panel's worth. Eight of the forty-one panels we track clear the floor as a pair.

The socket is one round 4-pin aviation port, the middle input, which BLUETTI labels CP2. Behind its four pins sit two separate charge circuits, DC1 and DC2, each with its own MPPT, the controller that hunts for a panel's best working point. Each circuit is rated for 1200 W and 12 amps, 2400 W between them. The MC4-to-Aviation cable in the box is how panels reach them. MC4 is the weatherproof snap-together plug most rigid and large folding panels end in.

The biggest set we'd put in front of it is four panels, a pair on each circuit. Four of Jackery's SolarSaga 500 X deliver 1440 W and have the 5120 Wh battery full in a little over three and a half hours of good sun. At 187 pounds the EP500Pro stays where it is put. At the cabin that would be inside the south wall, two pairs of rigid panels on the roof above it and one cable through the wall to the socket. A single folding panel on the deck would do nothing for this one, so I wouldn't bother unfolding it.

The door
55–145 V
Its width
2400 W
Plug
Aviation
Full battery, best case
~2.1 h
BLUETTI EP500Pro portable power station
The manual wants a licensed electrician before the EP500Pro is wired into a sub-panel. Panels you plug in yourself.

The door

Every panel we track, lined up at the EP500Pro's solar input

Every panel we track with a published Voc, standing in a line by that figure. The black line is 145 V, and nothing comes close to it alone. BLUETTI's manual prints the window two ways. The spec table says 12 to 150 volts. The FAQ a few pages on says third-party panels must sit between 55 and 145, and we use the stricter pair.

The pale cap on each bar is the extra voltage a −10 °C morning adds, about 10%. On most stations the cap is the part to watch. Here it only helps. Cold pushes a pair up toward the floor. A hot afternoon on a dark roof pulls it back down, and a pair that only just clears 55 can drop out once the panels warm. A January sunrise on my deck would be the easy test for this station. August is the hard one.

Hover a bar for the panel's name. If you own a panel, type its Voc below and it joins the line. Then double it, because on this station a bar is one panel and the plug carries two.

Swipe sideways for the whole line-up.

050100150volts, open-circuit+1++yours?145 V · the lintel55 V · the step

Hover or tap a bar for the panel’s name and its verdict.

  • Fits through the door
  • Too tall
  • Extra height on a −10 °C morning
  • Maker prints only the operating voltage; the real height is above the dashes
  • 1Our pick: BLUETTI 350W

What we'd buy

The best solar panel for the EP500Pro

Picked by the numbers on this station, not by brand.

Best overall

BLUETTI 350W Solar Panel (PV350)

4 panels deliver 1008 W.

Check price at BLUETTI

Best value

BLUETTI PV100 FX Flexible Solar Panel | 100W

About $2.28 for every watt it actually delivers here. 4 panels deliver 288 W.

Check price at BLUETTI

A day on solar

How long the EP500Pro takes to charge on solar

A little over two hours, with the input full at 2400 W. No set we'd build gets there. Four of Renogy's 590 W rigids deliver 1700 W and have the battery full in three hours of good sun. Four of Jackery's SolarSaga 500 X deliver 1440 W and take a little over three and a half. Four of BLUETTI's own 350W panels deliver 1008 W and take about five.

A good day has 3 to 6 hours of sun that strong, so any of those sets fills the EP500Pro in a day. 5120 Wh is a lot of battery, and the small pairs are counting in days. Four of the PV100 FX flexibles deliver 288 W and need about eighteen hours. Where you live and what month it is decide how many good days you get. The system builder works that out for your state.

a good day's sun: 3 to 6 h0 h1 h2 h3 h4 h5 h6 hInput full (2400 W) · full in 2.1 h

Hours of good sun, from empty. Where you live and the month decide how many of those a day gives; the system builder works it out.

Every panel that fits

Solar panels compatible with the EP500Pro

Eight fit, two of them BLUETTI's own, and none of them alone. For each one: the cable that reaches the aviation socket, what a set of them delivers in good sun, and the set itself. Here the set is always four panels, two in series on each circuit. Delivered watts first.

Too tall

Solar panels that won't work with the EP500Pro

Nothing is over. A pair of anything we track stays under 145 volts with the cold cap on, so this section has nothing to show. On the EP500Pro the trouble is at the bottom. Twenty-three panels with a published Voc don't reach 55 as a pair, and a pair per circuit is where our sets stop. BLUETTI's own PV200 is one of them, at 24.6 volts on the label. Two of those in series fall well short.

Ten more are missing from the chart entirely. Their makers publish a working voltage and no Voc, BLUETTI's own SORA 500 among them, and we don't fill that in for them.

Above the window BLUETTI has an answer, sold separately. The PV Drop Down Module D300S steps a roof string, several fixed panels wired end to end, down to what the EP500Pro accepts. The manual limits it to strings under 550 volts open-circuit and rules out panels with microinverters built in. If the roof already had the string, I'd price the module before I priced four new panels.

Under the 55 V step, even in series (23)

No verdict (10): the maker doesn't publish an open-circuit voltage

Own a panel that isn't in the line-up?

Type its voltage into the door chart above for the height test, then put the rest of the label into the panel checker, already set to the EP500Pro, for current and plug too. Or build the whole system to see how it keeps up where you live.

The plain answers

How long does the EP500Pro take to charge on solar?

At its 2400 W solar limit it refills in about 2.1 hours. More panel watts than that won't charge it any faster.

What adapter does the EP500Pro need for solar?

Every panel we track needs a cable to reach its Aviation input.

The cables they need: MC4 to Aviation (3 panels), XT60 to Aviation (1 panel) and Anderson to Aviation (1 panel).

3 panels don't have a named plug from their maker, so check the lead before you buy a cable.

Can you use non-BLUETTI solar panels with the EP500Pro?

Yes. What decides it is the panel's voltage and plug, not the brand. 6 panels from Anker SOLIX, EcoFlow, Jackery and Renogy work with it, as long as the panel stays under 145 V on a cold morning and starts above 55 V.

No single panel starts it; they go in series. The strongest setups here are 4 Renogy 590W N-Type Bifacial panels (1700 W delivered) and 4 Jackery SolarSaga 500 X panels (1440 W delivered).

Can you connect two solar panels to the EP500Pro?

You have to. Its input starts at 55 V, so one panel alone won't wake it: wire 2 or more in series.

Wired in series, up to 2 BLUETTI PV100 FX Flexible panels fit under its 145 V limit, even on a -10°C morning. Series adds voltage; parallel adds current.

Past 2400 W delivered, more panels only help on cloudy days.

What is the EP500Pro's solar input?

DC1 (DC1 PV+ / DC1 PV-, via the CP2 4-pin aviation charging port): 55–145 V, up to 12 A, 1200 W. DC2 (DC2 PV+ / DC2 PV-, via the CP2 4-pin aviation charging port): 55–145 V, up to 12 A, 1200 W. 2400 W across all inputs together.

Input limits from BLUETTI's documents, checked 2026-09-18 (source). Delivered watts assume 72% of the panel's rating in good sun.