My 300 watts modified sine wave inverter does not work properly.It turns on and the power stays on for 5 minutes going out with a whistling sound. I am using a 12volts,5 amps-sealed lead acid battery(re-chargeable battery) with the unit and the solar panel is from Instapark, 5 watts maximum..... My 300 watts modified sine wave inverter does not work properly.It turns on and the power stays on for 5 minutes going out with a whistling sound. I am using a 12volts,5 amps-sealed lead acid... » Read More My 300 watts modified sine wave inverter does not work properly.It turns on and the power stays on for 5 minutes going out with a whistling sound. I am using a 12volts,5 amps-sealed lead acid battery(re-chargeable battery) with the unit and the solar panel is from Instapark, 5 watts maximum..... « Show Less
342490
That long whistle sound pops on when power supply is not sufficient. At least from my experience. Try a much lower power draw device on it like a mini Christmas light set and see if the problem persists.
764257
It sounds defective. I ran mine over 2 nights camping, using a small rechargeable 12 volt battery. I only heard the alarm once towards the end of the second night when I dropped below 12v. I thought it was a great lite unit for the price. I used 12 strings of LED lights around my campsite and people were amazed at the effect.
764258
If the sound is probably indicating low battery, are using a 60 watt battery that is very little capacity. Check how much charge is taking out of the battery and how fast you are recharging because it is surely that.
1896988
Thank you for your interest. Chargers need a minimum of 200 watts to be used with an inverter. If you are using a generator be sure to use full sine wave not modified wave. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499)
168479
No it is a modified wave inverter. You may experience problems or may not. I am not an expert. I plan on powering my APC/UPS 750 backup supply with this inverter to run my computers. My backup is a pure sine wave inverter/power surge protector. I have used modified wave inverters for appliances and had no problems. Most experts do recommend pure sine wave for computers,TVs,etc. but I am not an expert. I do know pure sine wave inverters cost much more. Andy
511566
You should definitely look in the product manual for your inverter (probably available online). The manufacturer of my 300-watt pure sine wave inverter specifies a 40 amp fuse.
501708
No its a modified sine wave. Do not purchase this inverter it has a 50 cycle 120v output. It will not work for many North American rated devices. The stated specifications are incorrect.
1436889
It's not a "Pure Sine Wave" - those are expensive. This one is a "Modified Sine Wave" - a square wave in other words. it didn't interfere with my car radio, and didn't cause any radio noise in a small tabletop 120V radio that I ran out of this inverter.
1613946
If you're batteries have enough power and the solar system can keep them charged, bearing in mind you'll be taking power from the batteries at night when they....the batteries are not being charged the answer is yes. The difference is in using a pure sine wave inverter instead of a modified sine wave inverter. With regard to the output per plug, [on or from the inverter] if needed you can have a small distribution box made up to take two outputs in and one output out thereby doubling your power available but drawing more power off your batteries.
97621
The inverter will not get to 150deg. If it does it will eventually shut down and cool off to protect it from damage. Thanks ML SOLAR
1024164
Modified sine wave. This inverter will not perform as advertised. Very weak.
611210
Hi Gary, The Nature Power Solar Home and RV Kit with 40 Watt Solar Panel, 1800 Watt Inverter and 60 Amp Battery has a modified sine wave inverter. Please feel free to contact Earthtech Products if you have any additional questions. Best regards, Earthtech Products Customer Service
1533191
choose another inverter,Energizer or whistle dont buy this one worked few times then quit
1318351
The instructions doesn't give enough explanation. I called the company for my inverter and asked if solar is compatible with their inverter hooked up to the charge controller. They said to keep the inverter connected to the battery. The only thing I can think of is using a 12 volt light or a small apliance could be connected directly to it instead of using the battery power. If a 12 volt light is connected directly you are taking advantage of the solar imediatly. If the same light was connected to the battery instead, the charge controller doesn't let the solar charge the battery until it drops to a certain voltage. So solar panel isn't being used to its full advantage. The instructions doesn't give enough explanation. I called the company for my inverter and asked if solar is compatible with their inverter hooked up to the charge controller. They said to keep the inverter connected to the battery. The only thing I can think of is using a 12 volt light or a small apliance could be connected directly to it instead of using the battery power. If a 12 volt light is connected directly you are taking advantage of the solar imediatly. If the same light was connected to the battery instead, the charge controller doesn't let the solar charge the battery until it... » Read More The instructions doesn't give enough explanation. I called the company for my inverter and asked if solar is compatible with their inverter hooked up to the charge controller. They said to keep the inverter connected to the battery. The only thing I can think of is using a 12 volt light or a small apliance could be connected directly to it instead of using the battery power. If a 12 volt light is connected directly you are taking advantage of the solar imediatly. If the same light was connected to the battery instead, the charge controller doesn't let the solar charge the battery until it drops to a certain voltage. So solar panel isn't being used to its full advantage. « Show Less
251276
A small inverter may do the trick but be sure that you have a return option if there is a problem. Most inverters produce square wave A/C (not sine wave) and may not work with some electronic devices. A 100 Watt unit may do but 200 Watts is better. Plan on spending $20 to $40 for one. Another option is a portable power supply with a built-in inverter (the kind with jumper cables).
2276883
Hi Joe, My Instapark panels continue to work consistently well. Please have others back this up but I believe the answer is the voltage taken with all cells under full sunlight. When you cast a shadow over a portion of the panel, the voltage falls off. In my case I'm driving 12 volt fans directly from the panels and they simply slow down when the panel(s) don't receive full sunlight. Please confirm with others.
692857
Yes it's a pure sine wave inverter. It has a total harmonic distortion of less than 3%. I do not see a way to upload a picture. If you would like one, you can request it by email at info@powerbright.com
2245675
I used a Xantrex brand 1000W modified sine wave unit and it works just fine. I used #2 battery cables about 3ft long each that I custom made between the battery and the inverter. I got #2 welding cable from a local hardware supply store and the cable lugs from an electrical wholesale supply house. I used solder paste on the wire and using a propane torch and plumbing solder I soldered the copper cable into the cable lugs. I also installed a 100A fuse on the 12V side for safety. For the battery I used a Trojan 27TMX deep cycle battery. I you need photos of my setup I can send you them.
1489779
I have sold several of these without any issues. Check your ground at the panel. I think neutral and ground need to be bonded in your panel if it is hard wired to panel. If you mounted an outlet to the inverter, try connecting the ground and neutral together and the use a ground rod to earth. I cant think of anything else that would cause it. Sometimes fans will hum slightly, that is from the square sine wave but I havent heard of buzzing in stereo yet.