Review on 🚗 Efficient 300W Pure Sine Wave Power Inverter for Car: DC 12V to AC 120V Converter with Dual USB Ports by Gary Shakeone

I have two CPAP batteries that needed charging during a recent 9 day trip. Unfortunately, I have found that my 175 watt Duracell inverter is not powering the PSU that charges the batteries. It worked fine for my camera charger but not for the CPAP charger. I did some digging and found that for charging certain types of devices like CPAPs, inverters need to be purely sinful to deliver the correct power. After reading various articles about power input conversion, I settled on this 300W inverter. Lo and behold, it charges my CPAP batteries just fine (as tested driving from one campsite to another in a few hours). The power delivered seemed consistent, and the batteries charged at a rate on par with a household plugged into our standard outlets. I was able to charge my iPhone and portable charger at the same time with the CPAP battery, all at a speed equivalent to charging separately at home. Overall I am very satisfied with this inverter. It's not too big, feels solid, and does exactly what I need it to do.