NEXPOW Portable Power Station 500W 555WH(Peak 1000W)150000mAh Backup Lithium Battery,Solar Generator (Solar Panel Not Included) with 60/100W PD and 110V/500W AC Outlet for Home Outdoor Camping RV use

I've owned this for 2 years now. It works fine as a battery backup - but don't put a continuous load on it (e.g. as a UPS). I tried to use it as an uninterruptable power supply (UPS) for my Cable Modem. The cable modem draws 25 watts continuously. This past year, I've noticed it cannot keep a charge with a continuous 25W drain AC load. Even though the unit is plugged into AC Power, the battery will slowly drain to zero - meaning using it as a UPS is worthless. But if you want to power your laptop or recharge your phone where there's no other power available - it works fine.

I use a Vevor variac transformer with this to boost voltage higher as most line voltage runs between 120 to 130 volts nowdays. First the 24v DC 30 amp Anderson plug would likely be used in conjunction with a 24v MPPT charge controller fed with solar/wind as the higher voltage allows smaller wire to be run from solar panels. It does take around eleven hours from exhausted to full on supplied charger; however your can use these chargers which were sold as a deal https://www.amazon.com/Lead-Acid-Portable-Maintainer-Desulfator-Motorcycle/dp/B0BJV2VBT5 and I bought them to charge via the Anderson connector using this adapter as the chargers have XT60 output connecters https://www.amazon.com/dp/B0BYSBDJZY?psc=1&ref=ppx_yo2ov_dt_b_product_details so you can run a small load while charging AND charge simultaneously using the supplied charger that plugs into the round 7909 connector and the either charger I linked set to LIFE type battery charging via the red/black 30Amp Anderson connection: using both chargers simultaneously is close to 400 watts minus any connected load draw like I had a small refrigerator and freezer connected while charging. So that solves the long charge time down to probably five hours from empty which is about what it takes to change a pair of deep cycle AGM I also have so works for me.

I bought this 10 months ago to use at my camper for my cpap machine in case of power loss. I put it in the camper after I fully charged it and let it be. I pulled it out a few weeks ago to use and it would work for a short time, then there would be a loud beep and then it would just shut off. So, I reached out to NEXPOW and after a few emails back and forth, explaining the issue and sending a screenshot of my purchase from Amazon, they are refunding me the price of the charger, as the one I bought is not being made any longer (there is now a newer model).

I did not have a good luck on my first order. It did not re-charge after I received the third day so I ask for a replacement. The second came in just 3 days and it works well so far.The battery type and product information was mixed but now is corrected. At the time I ordered this Power Station, it indicated this was LifePO4 battery station under “COMPACT BUT POWERFUL” product description but Technical Detail stated “Battery Cell Type ‎Lithium Ion”. Now, the product description removed the LifePO4 wording. However, I am still puzzling about “Engine Type: 4 Stroke”.There are a few things I like about this item:1. This station is a ~300wh capacity Power Station so it provides a good cruising time for its size and weight.2. Each output port provides stable output watts with added load to it.3. The flat top design also allows a stacking arrangement if there are additional stations.There are a few things others might run into like myself:1. The re-charge input rate is slower than other similar Portable Power Stations. I plug-in to wall outlet and the input is about ~55w. The solar panel input under direct sunlight is about ~65w peak. It will take longer to fully charge this ~300wh station.2. The AC output is Type-B connector but the vertical size is opposite from our normal Type-B connectors and you could refer to my photo. I could only use Type-A connectors on this station. This might reduce appliances to be used on this station depends on its connector types.

I wanted this device as an emergency battery for my CPAP machine, as well as my other electronics in case of being away from power for an extended period of time. This product very capably accomplishes all of that.The battery arrived about half full. Following the instructions, I immediately charged it, assuming it was going to take a very long time. That assumption was wrong. I walked by around 3 hours later to find it was fully charged and waiting. This is by FAR superior to several other battery backs I've owned. The manual states that it takes about 8 hours from empty, so it may have charged little faster than their estimate.I really like the fact that it can be charged either via the supplied adapter, USB-C, or a car adapter. Also, you can use existing car adapter accessories because that adapter is included as well. Plug the adapter into the DC out port, hit the power button, plug in your accessory, and go.I tested the USB-C port with my Samsung Galaxy Note 20 Ultra and it showed quick charging. Next up was an HP laptop that requires 65 watt charging. I know that the battery is only rated for 60W from that port, but gave it a try anyway to see what would happen. The laptop had a popup that suggested I use an official HP adapter, but it charged anyway at approximately 55-60 watts as I showed in the picture. I also tried it with an older Lenovo laptop (45 watts USB-C) and it worked flawlessly.An important thing to note is that the USB-C will automatically power on if you plug something into it. The regular USB-A (rectangular) connections on the front will NOT. You'll have to tap the power button to get them to turn on. I initially thought there was something wrong with the device, but this appears to be by design. (Whew, self-inflicted crisis averted!)And speaking of self-inflicted crises, be sure to read the owner's manual, especially pages 6 and 7 where it tells you how to turn on the AC plugs. As I picked the unit up to examine it, my finger rested on the side power button, which I had pressed many times. But this time my finger rested on the button for a few seconds and I heard the battery start emitting a hum like something extra had turned on. If I had read the manual FIRST instead of merely skimming it, I would have known that pressing the side power button turns DC on and off. But HOLDING it for three seconds turns the AC plugs on and off. (Be smarter than me and read, ok?) :)I seriously tried to kill this battery. I left my laptop plugged in for 3 hours while working and charging, charged 2 phones, and then ran my CPAP machine non-stop for 4 hours. It was still showing 2 of 4 power bars after all this. I guess you can tell I was impressed. I may buy another of these as a gift. The battery took everything I threw at it and laughed like "Is that the best you got?"P.S. Don't hold the battery 12 inches from your face when you hit the flashlight button to test how bright it is. I learned the hard way that wow that thing is bright!