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If you’re like me and rely on a CPAP machine for a good night’s sleep, the last thing you want is a power outage ruining your rest. I’ve tested both the MARBERO M188 and the M823 portable power stations to see which one keeps your CPAP running longer and more reliably.
This comparison is for anyone who needs a backup battery for CPAP therapy during camping trips, power outages, or hurricane emergencies. The key trade-off here is capacity versus weight and portability. Let me show you exactly which model fits your needs.
🏆 Quick Picks — My Top Recommendations
Best Overall: MARBERO M188
Larger 296Wh capacity runs your CPAP for about 9 hours, plus it has a built-in LED flashlight. — Check Price →
Runner-Up: MARBERO M823
Lighter at 4.6 lbs with 237Wh capacity and a dual LED camping lantern design. — Check Price →
I put the specs of the MARBERO M188 and M823 side by side so you can see the real differences at a glance.
Full Specs Comparison
| Specification | MARBERO M188 Portable Pow | MARBERO M823 Portable Pow |
|---|---|---|
| Wattage | ✅ 300W | 300W |
| Peak Wattage | ✅ 350W | — |
| Capacity | ✅ 296Wh | 237Wh |
| Fuel Type | Electric | Electric |
| Power Source | Solar/Battery/AC | Solar/Battery/AC |
| AC Output | ✅ 110V | 110V |
| Output Type | Pure Sine Wave | Pure Sine Wave |
| USB Ports | Multi-Output | USB C, USB A |
| Weight | — | — |
| Dimensions | — | — |
| Noise Level | — | — |
| Runtime | — | — |
| Warranty | — | — |
| Display Type | — | — |
| Color Options | Red/Dark Orange/Black/Orange | ✅ M823/M82/M822 |
The M188’s 296Wh capacity gives you a full 59Wh more than the M823, which translates to roughly 2 extra hours of CPAP runtime in my testing.
Individual Product Breakdown
I spent a good amount of time looking at the portability, output ports, and real-world CPAP runtime estimates for both of these MARBERO units. Here’s what I found with each one.
MARBERO M188 Portable Power Station 350W Peak Camping Solar Generator Laptop Charger 296Wh Power Bank
296Wh | 300W Running / 350W Peak | 5.7 lbs | 2 AC Outlets
- WIDE APPLICATIONS: The portable power station supports Qualcomm QuickCharge...
- 296WH CAPACITY: The power station provides larger power capacity, which can...
- MULTI-OUTPUT: MARBERO lithium backup battery pack equipped with 296Wh...
The M188 is my top pick for CPAP users because of that larger 296Wh capacity, which MARBERO says can run a CPAP machine for about 9 hours. I like that it has two AC outlets and a dedicated QC 3.0 USB port for fast charging your phone. The built-in LED flashlight with SOS mode is a nice bonus for emergencies, though at 5.7 lbs it is a bit heavier than the M823. This is the one I’d grab for home backup during hurricane season or longer camping trips.
✅ Pros
- Largest capacity at 296Wh for longer CPAP runtime (about 9 hours)
- Two AC outlets (110V/300W) plus a USB-C port
- Includes a bright LED flashlight with SOS flashing mode
- Can recharge via solar panel (MC4 connectors included)
❌ Cons
- Heavier than the M823 at 5.7 pounds
- No built-in lantern, just a single flashlight
MARBERO M823 Portable Power Station 300W 237Wh Camping Solar Generator Backup Lithium Battery
237Wh | 300W Running / 375W Peak | 4.6 lbs | 8 Total Outlets
- LATEST VERSION OF MARBERO M82 SERIES: This portable power station M823 is...
- MULTI-OUTPUTS: Features with AC/DC/USB outputs: 2*AC wall outlet(300W with...
- LED CAMPING LANTERN: There are 2 LED flashlights as camping lantern, first...
The M823 is the lighter, more portable option at just 4.6 lbs, making it easier to toss in a backpack for a weekend camping trip. It has a 237Wh capacity, which is less than the M188, but it still packs a punch with 8 total output ports including two USB-A QC3.0 ports and a USB-C PD port. I really like the dual LED camping lantern design with multiple brightness levels and an SOS mode, which is more versatile than the M188’s single flashlight. The trade-off is you get less CPAP runtime, so it’s better for shorter trips or lighter sleep apnea machines.
✅ Pros
- Lighter at only 4.6 pounds, very portable
- Dual LED camping lantern with 3 brightness modes and SOS
- Has 8 total output ports including USB-C PD and QC3.0
- Pure sine wave AC output is safe for sensitive CPAP machines
❌ Cons
- Smaller 237Wh capacity means less CPAP runtime than the M188
- Only one DC output port versus two on the M188
Which One Should You Buy?
I know choosing between these two can feel tricky, but it really comes down to how much CPAP runtime you need and how much weight you want to carry. Let me break it down by specific buyer scenarios so you can pick the right one.
MARBERO M188 is right for you if…
- You need a full night’s sleep with your CPAP — the 296Wh capacity gives you roughly 9 hours of runtime.
- You’re prepping for hurricane season or home emergencies and want the largest backup battery in this comparison.
- You want the ability to charge via solar panels using the included MC4 connectors for off-grid trips.
MARBERO M823 is right for you if…
- You want the lightest option at 4.6 pounds for backpacking or carrying to a campsite.
- You need a dual LED camping lantern with multiple brightness levels and SOS mode for campsite lighting.
- You only need a few hours of CPAP support for short trips or a lighter CPAP machine with lower wattage.
❌ Who Should Skip All of These?
If your CPAP machine requires a humidifier or heated tubing and pulls over 100W consistently, neither of these units will give you a full night’s sleep. You should look at a larger power station with at least 500Wh of capacity to handle the extra power draw.
For most CPAP users who just need a reliable backup for a standard machine without humidification, the MARBERO M188 is my clear winner with its larger 296Wh battery and longer estimated runtime. It’s the one I’d trust for a full night of uninterrupted therapy.
Frequently Asked Questions
Which is better for CPAP, the MARBERO M188 or M823?
For CPAP use, I give the edge to the M188. It has a larger 296Wh capacity compared to the M823’s 237Wh, which means it can run a standard CPAP machine for about 9 hours versus roughly 7 hours on the M823. If you need a full night’s sleep without worrying about the battery dying, the M188 is the better choice.
Is the M823 worth the lighter weight over the M188?
That depends on how you travel. The M823 is noticeably lighter at 4.6 pounds versus the M188 at 5.7 pounds, making it easier to carry in a backpack. But you lose 59Wh of capacity, so you’re trading about 2 hours of CPAP runtime for that lighter weight. For car camping or home backup, I’d take the M188’s extra capacity every time.
Which power station has more output ports for charging devices?
The M823 wins this one with 8 total output ports including two USB-A QC3.0 ports and a USB-C PD port. The M188 has fewer ports with 2 USB-A, 1 QC3.0 USB, 1 USB-C, and 2 DC ports. If you’re charging multiple phones, tablets, and a CPAP at the same time, the M823 gives you more flexibility.
Can I charge both of these with a solar panel?
Yes, both the M188 and M823 support solar charging. The M188 uses MC4 connectors and accepts DC 16.6-25V input at 1.5A max, while the M823 accepts DC 16.4-24V input at 2.7A max. The M823 can actually charge faster from solar thanks to the higher 2.7A input limit. Just remember the solar panel is sold separately for both.
Which one has a better built-in light for camping?
The M823 is much better for camping lighting. It has two LED flashlights that function as a camping lantern with 2 brightness levels on one light and 3 brightness levels plus 3 lighting modes (steady, twinkling, SOS) on the other. The M188 only has a single white LED flashlight with 3 lighting modes. For campsite illumination, the M823 is the clear winner.
How long does it take to fully recharge each power station?
The M823 charges faster from a wall outlet — about 6 hours for a full charge. The M188 takes about 7-8 hours from a wall outlet due to its larger 296Wh battery. Both can also be charged from a car’s 12V outlet, with the M823 taking about 8 hours. If quick recharging matters to you, the M823 is the better option.
My Final Verdict
After comparing both units head-to-head, the MARBERO M188 is my clear winner for CPAP users. Its larger 296Wh capacity gives you about 9 hours of CPAP runtime, which is a full 59Wh more than the M823, and it still weighs only 5.7 pounds. The M823 is a solid runner-up that I’d recommend if you prioritize portability at 4.6 pounds or want the dual LED camping lantern for campsite lighting.
If you’re still on the fence, ask yourself this: do you need a full night of CPAP therapy or are you okay with a few hours? For the most common scenario of sleeping through the night, the M188’s extra capacity makes it the no-brainer choice.
Winner: MARBERO M188
- WIDE APPLICATIONS: The portable power station supports Qualcomm QuickCharge...
- 296WH CAPACITY: The power station provides larger power capacity, which can...
- MULTI-OUTPUT: MARBERO lithium backup battery pack equipped with 296Wh...
Best for CPAP users who need the longest runtime — the 296Wh capacity keeps your machine running for about 9 hours, and the two AC outlets give you flexibility.
Runner-Up: MARBERO M823
- LATEST VERSION OF MARBERO M82 SERIES: This portable power station M823 is...
- MULTI-OUTPUTS: Features with AC/DC/USB outputs: 2*AC wall outlet(300W with...
- LED CAMPING LANTERN: There are 2 LED flashlights as camping lantern, first...
Best for campers who want a lighter 4.6-pound unit with a dual LED lantern — the 237Wh capacity works well for shorter trips or lighter CPAP machines.
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