RING 500W Power Source Compact Inverter With USB - Ideal For Charging Smartphones & Tablets

I have used inverters before and purchased this because I know Ring have good reputation,It works well but 500w is a bit optimistic although it is comfortable with 400watt load , I tested it with 300watt for an hour continuously and no problem.I have a 100watt electric kettle so this is ideal when out not to mention the laptop etc.The only criticism is the plastic case , whereas it is robust enough I do feel an Aluminium casing would be better even if a couple of pounds more and all black construction makes it difficult to locate the socket , I have painted the socket area on mine white.However it works well and I am satisfied I got value for money , as expected well packaged and prompt delivery

Ran it with two teenagers and an 8 year old in the car - I even used a 4-way adapter and it coped with powering two ipads and a laptop for a 3 hour journey. The fan is noisy, and it does get hot so be careful not to obscure the fan outlet. Recommend it.

My first Ring Inverter was brilliant. It was the old style with a metallic case. It lasted over 10 years and ran quietly and without any problems. The new one works well but has a very noisy cooling fan which wines away continuously, even when it is not under load. Despite the noise it is still good value for money.

Bought device for camping trip, and opted for a BRAND and accepted this unit costs +60% of similar units (£49 at time of purchase) to get a reliable quality product. Opened on camping site, and found the unit to have a faulty 3 pin socket (the plastic screens covering the pin slots when not used), and rattling inside. Putting the fault aside, the unit is very light and unsubstantial, unlike other units which are heavier and rely on the mass of heat sync. This may account for the many reports of louder fan noise. I cant speak for performance , and whilst not having a cigarette lighter attachment may be deliberate to deliver higher current (not sure i fully agree with this), it really makes this unit more inconvenient. Our friends had a unit costing £30 from Amazon which was much better built and WORKED perfectly. On the flip side, as usual, Amazon were brilliant organising a return/refund.

This was bought for our mobile home, for when we need 240v but can't run the generator. It does the job admirably - the only problem being the fan. It is quiet loud and has the pitch tones of a dentists drill. I'm going to try giving the fan an oiling or maybe stick a resistor in there to slow it down.It's a shame about the fan otherwise it would have got 5 stars.

Very good price and is proving very useful - have no electricity at my stables and this has allowed me to clip the horses and have a mare pregnancy scanned easily

Does the job, but that loud fan noise is exruciating. Also these 240v converter thingys should have at least 2 USB ports, and this only has one. I had to buy the Bestek version of the 240V converter and that is a phenomenal improvement over this low quality product. I just have it as a backup just in case

wanted to charge a laptop, from a 12v batteryapparently only a certain type of inverter work with laptops chargers, the wrong type makes them zzzzzzzzzzzzzzasked about in various forums and was told to, buy several gizmos, wire this and that, it would then save wasted power. but would probably inflate the insurance being a modification, so decided to try this no hassle plug and play 150 watt inverteramazingly it works for me,plugging into the cigarette lighter the inverter fan comes on, it does sound like an hair drier on lowplugging the charger in, all seemed fine,then the laptop started to chargeso far everything seems to be working ok..