Allpowers SP029 Solar Panel 140W
(11 reviews)
Four panels, 140 watts and an MC4 output rated for 25 amps: enough to refill a power station over a day, then fold the whole thing under your arm.
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Characteristics
- Output: 140 W, cells rated at 22 % efficiency
- Main connector: MC4 up to 25 A, 10 A DC port
- Direct outputs: 2 USB 5 V/2.4 A and 18 V/3 A
- Format: 4 folding panels, 4.49 kg, stand included
- The 25 A MC4 fits almost every power station
Detailed overview: Allpowers SP029 140 W foldable solar panel
The SP029 is the format most power station owners end up looking for: powerful enough to refill a 500 to 1000 Wh battery over a day, foldable enough to fit in a boot. Its four panels deliver 140 peak watts, which places it above the small 60 to 100 watt panels without tipping into the bulk of 200 watt models and beyond.
The point that really matters sits on the junction box. The main output uses an MC4 connector, the photovoltaic standard, and accepts up to 25 amps. That is what makes the panel compatible with the vast majority of solar generators on the market, whatever the brand, where some manufacturers impose a proprietary connector. The cable kit supplied with the panel covers the common cases: Anderson plug, classic DC barrel connectors, crocodile clips to charge a 12 V car battery directly.
Alongside that main output, two USB ports rated 5 V and 2.4 A each and an 18 V DC socket limited to 3 amps let you use the panel on its own, with no station in between. That is handy for charging a phone or keeping a laptop alive at camp, provided you accept the interruptions as soon as a cloud passes: with no buffer battery, charging follows sunlight exactly.
On efficiency, Allpowers quotes cells at 22 %, a figure consistent with decent monocrystalline. The manufacturer actually contradicts itself from one country to the next, sometimes saying polycrystalline in its product names, but 22 % efficiency is physically out of reach for polycrystalline, which tops out around 17 to 18 %. In practice, expect 90 to 110 real watts in full summer sun, with a sharp drop as soon as the angle of incidence degrades, hence the usefulness of the included stand.
The 4.49 kilos and the metre sixty of deployed length make this a vehicle, terrace or fixed-camp panel rather than a hiking companion. To walk with one, a 60 to 100 watt model remains wiser. To feed a station in a van, a motorhome or during a power cut, this is exactly the right size.
Full specifications
Detailed characteristics
Panel
| Peak power?Rated panel power in full sun (STC conditions). | 140 W |
|---|---|
| Cell technology?Cell type; monocrystalline offers the best efficiency, flexible CIGS tolerates shading better. | Monocrystalline |
| Conversion efficiency?Share of solar energy converted to electricity; higher means a more compact panel for the same power. | 22 % |
| Panel type?Foldable (portable), rigid framed (fixed install) or flexible (curved surfaces). | Foldable |
| Bifacial?Also captures reflected light on its rear side, for extra output. | No |
| Number of folds?Number of foldable segments. | 4 |
Electrical specifications
| Voltage at max power (Vmp)?Voltage at the maximum power point. | 18 V |
|---|---|
| Current at max power (Imp)?Current at the maximum power point. | 25 A |
Outputs and connectors
| Output connectors?Output socket type(s) (MC4, XT60, Anderson, DC, USB…); determines compatibility with your station. | MC4, Anderson, DC |
|---|---|
| USB-A outputs?USB-A ports to charge devices directly. | 2 × 12 W |
Durability and format
| Adjustable kickstand?Kickstand or support to angle the panel toward the sun. | Yes |
|---|---|
| Weight?Weight of the panel. | 4.49 kg |
☀ How fast does this panel recharge a power station?
The Allpowers SP029 140W panel (140 W) recharges a Jackery Explorer 1000 v2 (1070 Wh) in ~11h or an EcoFlow Delta 2 Max (2048 Wh) in ~21h, in full sun.
| Compact / mid | Recharge |
|---|---|
| EcoFlow Trail 200 DC (192 Wh) | ~2h |
| Bluetti EB3A (268 Wh) | ~2h45 |
| Jackery Explorer 500 v2 (512 Wh) | ~5h15 |
| EcoFlow River 3 Max Plus (sans fil) (858 Wh) | ~8h45 |
| High capacity | Recharge |
|---|---|
| Anker Solix C2000 Gen 2 (2048 Wh) | ~21h |
| Allpowers R3500 V2 (2880 Wh) | ~29h |
| Allpowers R4000 (3456 Wh) | ~35h |
| Fossibot F3600 Pro (3840 Wh) | ~39h |
Estimate in full sun (ideal conditions). In practice, count on 3 to 5 hours of truly useful sunlight per day, so a full recharge may span several days depending on weather and orientation.
Comparison
At around 170 euros, the SP029 competes with 100 to 200 watt foldable panels, through searches such as "140W foldable solar panel" or "solar panel for power station". Here is how it stacks up against three alternatives from our catalogue: the Allpowers SP033 200W, the Jackery SolarSaga 100W and the EcoFlow 160W.
| Criterion | Allpowers SP029 | Allpowers SP033 | Jackery SolarSaga 100W | EcoFlow 160W |
|---|---|---|---|---|
| Peak output | 140 W | 200 W | 100 W | 160 W |
| Weight | 4.49 kg | ≈ 8 kg | ≈ 4.7 kg | ≈ 7 kg |
| MC4 output | Yes, 25 A | Yes | Yes | Yes |
| Direct USB outputs | 2 USB + 18 V DC | No | 1 USB-A + 1 USB-C | No |
| Observed price | ≈ 169 € | ≈ 300 € | ≈ 250 € | ≈ 350 € |
In short, the SP029 stands out on watts per euro and on versatility: it is the only one in the group to combine a proper MC4 output for a station with USB ports usable on their own. The SP033 climbs to 200 watts but nearly doubles the weight and the price. Jackery's SolarSaga is better finished and slightly lighter, but costs considerably more for 40 watts less. The EcoFlow 160W targets output and weatherproofing, with no direct outputs. If you want something to refill a station without a large budget, the SP029 is the rational choice.
Related video
Video: Allpowers 140 Watt SP029 Foldable Solar Panel - Published on 19/01/2024
Our tester's review: Julien De Jurquet
The SP029 has a very clear place in the Allpowers line-up: it is the panel you buy when you already own a power station and want to refill it without a petrol generator. The advertised 140 watts is a laboratory peak figure, and in real use you should expect 90 to 110 watts on a good summer day, less as soon as the sun drops or the sky hazes over. That is the industry norm rather than a flaw specific to this model, but it is worth knowing before planning your day around it. The real argument lies elsewhere: the MC4 output accepts 25 amps, which makes it compatible with almost every solar generator sold today, and the bundled cable kit covers Anderson plugs, common DC barrel connectors and crocodile clips for a car battery. The two USB ports and the 18 V socket also let you use it on its own, without a station, which not every competitor offers. The four panels unfold to a little over a metre sixty, so you need space and reasonably flat ground, and the 4.5 kilos make themselves felt on a rucksack, even if they remain reasonable for the deployed area. The 4.1 customer rating across more than 320 reviews sums the product up well: solid and versatile, without being the best performer or the best finished in its category. For the money, it is a very coherent companion to a power station.
Frequently asked questions: Allpowers SP029 140 W foldable solar panel
The 140 watts is a peak figure measured in laboratory conditions. In full summer sun with the panel well aimed, expect 90 to 110 real watts. Output drops quickly as soon as the sky hazes over or the sun angle degrades, which is what the included stand is for.
In the vast majority of cases, yes. Its main output is an MC4 connector, the photovoltaic standard, accepted by almost every solar generator on the market. The supplied kit adds Anderson, DC and crocodile clip adapters. Just check that your station's input accepts 18 V.
Yes, and that is one of its strengths. Two USB ports rated 5 V and 2.4 A and an 18 V DC output let you power a phone or a laptop directly. With no buffer battery, though, charging follows sunlight and stops at the first cloud.
The panel is described as splash resistant, with no official IP rating published by Allpowers. It will therefore survive a passing shower, but the junction box and connectors are not designed to stay exposed continuously: fold it away if the rain settles in.
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Published on 25/07/2026