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!
| Brand | NEXPOW |
|---|---|
| Power Source | Solar Powered, Battery Powered |
| Recommended Uses For Product | Residential, Camping |
| Voltage | 110 Volts |
| Output Wattage | 300 Watts |
| Special Feature | Portable |
| Included Components | Charging Cable |
| Color | White |
| Product Dimensions | 9.69"L x 4.84"W x 6.46"H |
| Engine Type | 4 Stroke |
| Total Power Outlets | 2 |
| Frequency | 60 Hz |
| Manufacturer | Dongguan Yongsen New Energy Technology Co.,Ld. |
| Part Number | YP-300W |
| Item Weight | 9.33 pounds |
| Item model number | YP-300W |
| Batteries | 4 Lithium Ion batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Special Features | Portable |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
