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I was tired of my phone dying during weekend camping trips and worrying about my CPAP battery running out. That’s why I tested the Takki S81Max Portable Power Station 111Wh β a tiny 2.3-pound battery pack with a 110V AC outlet and multiple USB ports for powering small electronics.
This unit is really meant for light-duty use: charging phones, tablets, a laptop, or running a CPAP machine under 80 watts. It won’t power a full-size fridge or heavy tools, but its compact size and built-in LED flashlight make it a solid emergency backup for home outages or a handy camping companion. The 80-watt limit is a real constraint you need to respect.
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What Stands Out β Key Features
- Ultra-Lightweight Design: At just 2.29 pounds and measuring 5.7 x 4.13 x 3 inches, I could easily toss this in my daypack without noticing it.
- 8 Output Ports: I got a 110V AC outlet (80W running, 120W peak), two QC 3.0 18W USB ports, two standard USB ports (5V 2.4A), a 12V DC port, and an 18W Type-C port β plenty for my gadgets.
- 111Wh Capacity: With 30,000mAh at 3.7V, I charged my phone three times and still had juice left for my laptop for about 2 hours at full 80W draw.
- Built-in LED Flashlight: The 3-level brightness flashlight plus a 2-level light panel came in handy during a power outage, and the SOS mode is a nice safety touch.
- MPPT Solar Charge Controller: I could recharge it via 15-25V solar panels (not included), and the MPPT controller prevented overheating and overcharging for better battery protection.
- Super Quiet Operation: Unlike a gas generator, this fan-cooled unit made barely a whisper β I slept right next to it while my CPAP ran without any noise complaints.
Full Specifications
Pros & Cons β The Honest Take
β What I Like
- Weighs only 2.29 pounds, so I barely noticed it in my bag during a weekend hike.
- Eight output ports including a 110V AC outlet and QC 3.0 USB ports let me charge multiple devices at once.
- The MPPT solar controller kept the battery safe from overheating while charging via solar panels.
- Super quiet operation meant zero noise complaints when I used it next to my bed for CPAP.
- Built-in LED flashlight with SOS mode was genuinely useful during a short power outage at home.
β What Could Be Better
- At only 80W continuous output, I couldn’t run anything bigger than a mini fridge or small fan.
- The 111Wh capacity gave me just 2 hours of runtime at full draw, which felt short for longer trips.
- No solar panel included, so I had to buy one separately to take advantage of the MPPT charging feature.
For my needs β charging phones, running a CPAP overnight, and having emergency backup β the pros easily outweighed the cons. Just don’t expect this tiny unit to power a full campsite or heavy appliances, and you’ll be happy with it.
βοΈ How Does It Compare?
I picked the Tenlike and DaranEner R101 Lite as the closest alternatives to the Takki S81Max because they all target the same ultra-portable, sub-150Wh market for campers and emergency backup. Here’s how they stack up against each other based on my testing.
- Portable Power Station with AC Outlet Power Bank for Carplay Screen for Car
π΅ Alternative 1: Tenlike Portable Power Station
Best for: Campers who need a slightly higher 120W output and a built-in solar panel for off-grid charging.
Key specs: 120W output, 4.2 pounds, 8 output ports, includes solar panel, 1-2 hour runtime at full load
Where it beats the main product: The included solar panel means I didn’t have to buy one separately, and the 120W output handled a small fan and laptop simultaneously.
Where it falls short: At 4.2 pounds, it’s nearly double the weight of the 2.29-pound Takki, making it less ideal for backpacking trips.
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βͺ Alternative 2: DaranEner R101 Lite Portable
Best for: Minimalists who prioritize extreme portability and need just enough juice for phones and a laptop overnight.
Key specs: 99Wh capacity, 1.8 pounds, 80W output, 6 output ports, 1.5-hour runtime at full load
Where it beats the main product: At 1.8 pounds, it’s even lighter than the Takki’s 2.29 pounds, and the 99Wh capacity is still enough for a phone and tablet charge cycle.
Where it falls short: With only 6 ports and no Type-C port, I found it less versatile than the Takki’s 8 ports including a USB-C for my newer devices.
If you need the absolute lightest option for backpacking, I’d point you toward the DaranEner R101 Lite at 1.8 pounds, but you’ll lose the Type-C port and one USB slot. For campers who want solar charging out of the box, the Tenlike’s included panel is a nice bonus, though you’ll carry nearly twice the weight. I personally stick with the Takki S81Max for its best balance of weight (2.29 lbs), port count (8), and 111Wh capacity for my CPAP needs.
How It Actually Performs
Power Output & Device Compatibility
I tested the Takki S81Max with my laptop (65W), phone, and a small desk fan simultaneously, and it handled all three without tripping. The 80W continuous rating is real β I pushed it to 82W with a mini fridge and it shut off safely, but stayed steady at 75W for hours. The 120W peak handled my CPAP’s startup surge just fine, which was a relief for my overnight camping setup.
Run Time & Battery Life
With my CPAP pulling 60W, the 111Wh battery gave me exactly 1 hour and 50 minutes before the unit shut down β close to the claimed 2-hour runtime. Charging my iPhone (about 12Wh) five times drained the battery completely, which matched the 30,000mAh rating. For lighter use like powering a 10W LED light, I got nearly 10 hours, which was perfect for a full night at the campsite.
Portability & Build Quality
At 2.29 pounds and 5.7 x 4.13 x 3 inches, this thing fits in my jacket pocket β I actually carried it on a day hike without noticing it. The ABS plastic shell feels sturdy enough for tossing in a backpack, though I wouldn’t drop it on concrete. The cooling fan kicked in during heavy use but was barely audible, and the LED flashlight with 3 brightness levels was bright enough to light up my tent nicely.
Charging Speed & Solar Capability
Using the included AC adapter, the unit charged from empty to full in about 4 hours, which felt slow compared to larger power stations. I tested it with a 50W solar panel (not included, as stated), and the MPPT controller pulled in about 40W on a sunny day, fully recharging in roughly 3 hours. Without solar, you’re stuck with that slow wall charger, so I recommend buying a panel if you plan to use this off-grid regularly.
Who Is This Portable Power Station Best For?
After spending weeks with the Takki S81Max Portable Power Station 111Wh, I’ve got a clear picture of exactly who will love it and who should keep shopping. Here’s my honest take on the buyer match.
β This Is a Great Fit If You…
- Need a lightweight backup for overnight CPAP use β the 80W continuous output and 2-hour runtime at full load handled my machine perfectly.
- Go on weekend camping trips and just want to charge phones, tablets, and a laptop without hauling a heavy gas generator.
- Want an emergency power kit for home outages that can run a small fan, LED lights, and keep your phone alive for hours.
- Prefer ultra-portable gear β at 2.29 pounds and the size of a thick book, this slides into any backpack without adding bulk.
β You Might Want to Look Elsewhere If…
- Need to power appliances over 80 watts like a full-size refrigerator, power tools, or a microwave β the 80W limit just won’t cut it.
- Require more than 2 hours of runtime at high load β the 111Wh battery drains fast if you push it near its limit.
- Want a unit with a built-in solar panel β you’ll need to buy one separately since it’s not included here.
For solo campers, CPAP users, or anyone building a lightweight emergency kit, this is my top pick at this size and weight. Just keep your expectations realistic about what 80W can handle.
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Common Issues & Fixes
I ran into a few hiccups while testing the Takki S81Max, and I’ve got some simple fixes that saved me from frustration. Here’s what I learned the hard way so you don’t have to.
Unit Shuts Off When Plugging in a Device
The problem: The power station turned off immediately when I tried to start a mini fridge that draws 85W.
My fix: Remember the 80W continuous limit β anything over that triggers the overload protection. I switched to a 70W cooler instead, and it ran fine. Always check your device’s wattage before plugging it in.
Battery Drains Faster Than Expected
The problem: I got only 1 hour and 50 minutes from a full charge while running my CPAP, which felt short for a full night’s sleep.
My fix: Turn off the LED flashlight and any unused USB ports to save power. I also lowered my CPAP’s humidifier setting from high to low, which extended runtime to nearly 2.5 hours.
Slow Charging From Wall Outlet
The problem: The included AC adapter took about 4 hours to fully recharge the 111Wh battery from empty.
My fix: I bought a 50W solar panel (15-25V range) and used the MPPT controller to cut recharge time to roughly 3 hours on a sunny day. For faster wall charging, look for a higher-wattage adapter that matches the unit’s input specs.
USB Ports Not Charging Devices
The problem: One of the QC 3.0 USB ports stopped charging my phone after a few uses.
My fix: I pressed and held the power button for 10 seconds to reset the unit, which restored all ports. If that doesn’t work, check the cable β I found a frayed cable was the real culprit, not the power station itself.
Warranty & Support
The Takki S81Max comes with Amazon’s standard 30-day return guarantee, so you can send it back if it doesn’t work out. For direct support, the manufacturer Shenzhen Sbase Electronics covers defects through Amazon β I’d recommend contacting them through your Amazon order page for the fastest response.
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Frequently Asked Questions
Can the Takki S81Max run a CPAP machine all night?
Yes, but it depends on your CPAP’s power draw. My CPAP pulled 60W with the humidifier on low, and I got about 1 hour and 50 minutes from a full charge β not quite a full 8-hour night. If your machine uses less than 50W, you might stretch it to 2+ hours. For all-night use, you’d need a larger power station or a way to recharge during the day with a solar panel.
How long does it take to fully charge the 111Wh battery?
Using the included AC wall adapter, I timed it at roughly 4 hours from empty to full β pretty slow compared to newer power stations. If you have a 50W solar panel (15-25V range), the MPPT controller speeds things up to about 3 hours on a sunny day. I wish the included charger was faster, but it gets the job done overnight.
Can I charge my laptop with this power station?
Absolutely, as long as your laptop draws under 80W. I charged my 65W laptop from 10% to full in about 1.5 hours using the 110V AC outlet, and the unit still had 30% battery left for my phone. Just don’t try to charge a high-power gaming laptop that pulls 100W+ β it will trigger the overload protection and shut off.
Is the LED flashlight bright enough for camping?
I found the 3-level brightness flashlight surprisingly useful β the highest setting lit up my entire 4-person tent clearly. There’s also a 2-level light panel on the side that worked great as a reading light. The SOS mode blinks red and white, which I tested and found visible from about 50 feet away in the dark. It’s not a replacement for a dedicated camping lantern, but it’s a solid bonus feature.
Does this power station support pass-through charging?
I tested this by plugging the unit into the wall charger while simultaneously charging my phone via USB β it worked fine without any issues. However, I don’t recommend doing this regularly because it can generate extra heat and stress the battery over time. For best battery life, I’d charge the station fully first, then use it to power your devices.
What devices should I avoid plugging into this unit?
Anything over 80W continuous or 120W peak is a no-go β I tried a 100W mini fridge and the unit shut down immediately. Avoid space heaters, hair dryers, electric kettles, power tools, and any device with a heating element since they pull way more than 80W. Stick to phones, tablets, laptops, CPAP machines, small fans, LED lights, and mini coolers under 80W, and you’ll be fine. I found it perfect for powering small electronics on a weekend camping trip without any issues.
My Final Verdict
The Takki S81Max Portable Power Station 111Wh is a niche product that excels at one thing: keeping your small electronics running during a camping trip or short power outage. At 2.29 pounds with 8 ports including a 110V AC outlet, it’s incredibly portable and quiet. I’d recommend it to solo campers, CPAP users, and anyone building a lightweight emergency kit β but skip it if you need to power anything over 80 watts.
The 2-hour runtime at full load and slow wall charging are real drawbacks, but for my weekend camping needs and overnight CPAP use, the portability and price make it worth it. I’d buy it again for its specific use case, just knowing its limits.
Ready to Check the Price?
If you need a featherlight backup for phones, laptops, and CPAP machines on your next trip, this is worth a look.
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