I ordered this thing just the evening before because it could be delivered the next day. I wanted it to power my electric cooler specifically for a youth baseball competition for the next day though I wasn't sure if it would arrive in time and I knew it would probably be around 9 or 10 pm, which would be fine. The next morning I found out that the first game would be at 3:30pm and I knew from what I read about it that it would have to come by noon if I was going to have enough time to charge it sufficiently.(Info said 3 hours to fully charge) Now again, I didn't know what time it was going to arrive. Checking and re checking the tracking info shed little info on when it would arrive. Now I sure expecting it to arrive in time, just hoping. Well, I got a notice about 9:45 am that Amazon was 9 stops away with something else I was expecting. Well that shipment arrived at 11:30 and with it was this power supply! It did not charge as fast as I expected, it took about 4 hours the first charge to reach 63%. (It came completely dead, just so you know) Well I took it out at 63% with my cooler that draws, I thought, about 40 watts. (According to the gauge on this device, it ranges from 44 to 39 watts) I had the thermostat in the cooler set at 28°. It drew down the power supply about 10% in an hour. I then turned the temp up to 34° and it's now sipped only about 7% in the last 2 hours. This is very cool, so far!! It weighs almost nothing!! It's very small, about 8x8x8. So far, the only downside I can see at all is that on the top is the symbol for a wireless phone charger base, but so far, that does not appear to be what it t means, and there is nothing in the instructions about it. That would be a very cool addition to a little power cube that is able to charge in so many different ways. So though I usually don't care much about the color or the packaging, it was packaged very securely and the shipping was simply unexpected good!!!! Thanks. Read more
Excellent product for quick charging. It helped us after hurricane Melissa. I got 6 hours from it for a small fan. Smaller equipment, such as phones can give you 45 hours. Read more
After receiving this item I charged it til full. And with a power bar and two usb light strands connected. This item lasted for four hours with 50% charge left! I luv this! Would recommend to ev1! Read more
Arrived and would not charge! Have never been able to use it Read more
Perfect for my elderly parents use in power failure situation until additional support can arrive. Read more
This could have been a great product -- lots of different power ports (DC12V, USB A+C, AC -- rare to find all of these on competing 300 Wh products), ability to charge by DC or USB, retractable handle, square form factor that aids in packing, or stacking other things on top of it. Unfortunately, it lost 50% of its capacity after 6 months of use. I don't think this is a fluke either, since I also bought the 600 Wh version a couple months prior, and recently I have found its capacity dropped in half too (more like a factor of 3 honestly -- it may die soon). If you plan on using a power station for more than just a few months, spend the extra money on a known brand. But it brought me lots of camping memories while it lasted :) Read more
This is a very good product. I use it every day and it works perfectly. Read more
I’ve been using the EM300 Portable Power Station, and it has quickly become an essential for trips, outdoor adventures, and emergencies. It’s lightweight, compact, and easy to carry, with a sturdy built-in handle. The 259Wh LiFePO4 battery delivers reliable power, and I love the multiple charging options USB-C PD 65W, AC outlets, and even wireless charging, allowing me to charge several devices at once. It also supports solar charging, which is a great off-grid solution. A standout feature is the built-in LED lights, which are actually useful, one acts as a spotlight, and the other provides full-area illumination. Plus, it charges fast and is super durable. If you’re looking for a powerful, portable, and reliable power station, I highly recommend the EM300! Read more
