Can this be used on the AC Power? I am confused. The instructions don't really come out and say if you HAVE to use the battery or can you keep it plugged in. Does anyone know? Seller is not responding to me. Can this be used on the AC Power? I am confused. The instructions don't really come out and say if you HAVE to use the battery or can you keep it plugged in. Does anyone know? Seller is not... » Read More Can this be used on the AC Power? I am confused. The instructions don't really come out and say if you HAVE to use the battery or can you keep it plugged in. Does anyone know? Seller is not responding to me. « Show Less
503415
Do not leave it plugged in! I did and my battery is now dead. It turns out to be VERY expensive to change the battery b/c you must send it back to the manufacturer to do so. There are some good tips here on preserving the battery life that I really wish I had known beforehand. I'm currently trying to decide if it is worthwhile to replace the battery or not.http://1866uselady.com/show.php/en/online_store_2
503416
You *can* keep it plugged in, but it's not good for the battery. It's better to charge it, then let it run on battery. It warns you about 9 days before the battery goes (when you go to take your temp in the morning, you get a "BA09"... the next day "BA08" etc. But it still functions on those days. I think I charge mine overnight about once a month? So, you COULD leave it plugged in, and it would still function, but my understanding is that you'll reduce the longevity of the machine. (When you need to rely on the battery, the battery life might be compromised.)
760249
I just checked the instructions that came with the unit. It states that you can charge USB devices on AC or battery power but in order to save battery life the unit will cease charging external devices if being played on a high volume setting during battery operation. Hope that helps. ;)
1304725
Yes, this unit can be used while plugged in, in fact that is the only way my son uses it....he didn't even know that it could be used without being plugged in!
1724647
Why are some of the answers here are confusing, saying its good for 220Volts and yet use an adaptor. If it can be plugged in 110 to 220Volts it shouldn't need an adaptor, right?
1428440
My impression is that NO, this is a power source. It is used when one has a DC powered appliance and wants to use the appliance with AC power.
1409943
Hello! My name is Ken and It is a support team of JAPANONLINE US STORE(Amazon.com Seller). I will answer your question. AC power of this product, it can be used to AC100V-110V. America will be able to use so AC110V. If it exceeds AC120V, you can not guarantee operation. Please note. Please email if you have any questions. Thank you! -------------------------------------------------------------- JAPANONLINE US STORE Ken
928243
I think they say not to use it plugged in, but the charging time is a short four hours and the charge lasts for many hours, so the power it uses without being plugged in is more than sufficient to tackle the job.
373244
It does run off of AC power if you have plugged in the adapter to the wall and to the radio. And--you need to make sure it is sitting well inside the charging unit. If it is not placed properly in it (for example-not flat at the bottom--then the red charging light does not come on indicating it is not charging. Plus make sure you are turning on the ON button if you want to hear a report. It does not report the weather if it is not turned on. I hope this helps.
217899
There's an AC adapter to charge it....I haven't tried keeping it plugged and using it - but once charged it will keep for quite a long time I've noticed!
53587
It is not battery powered. It must be plugged into AC at all times. I suppose if you were really motivated, you could make a DC power supply from a car battery or two, and a DC to DC converter, but that's beyond the scope of this reply :-).
2007929
it will not charge by ac.you will need to to use to also use an ac charger at some point over night charge (a dc charger will only maintain a batteries)
845170
While the JNCAir does have a auto shutoff for AC charging, it is still not recommended to keep it plugged in all the times. DEFINITELY do not do that if recharging with DC power. Recharging with DC power works, but there is no auto shutoff and the battery (and you) might get damaged if left in too long. Charging with DC is only for emergency situations. basically, just leave it plugged in about 20 minutes to a couple hours, depending on how dead the JNC is. ok, sorry I went off on a tangent..so NO, do not leave it plugged in charging at all times, only charge it if it needs to be charged
1322643
You can plug it in to recharge it, and I have used it while plugged in. I believe the instructions say not to do that, but it works.
368224
You will see the battery light turn off once the battery is full. There should be no reason that it can remain plugged in. The battery is a Lithium Battery, just like most cell phones. Now with that said...all of us have used our cell phones while it is plugged in and they tend to get hot. My advice would be to use this as it was designed. Charge it....unplug it....use the speaker..recharge when battery is low. There are other bluetooth speaker that you can get that don't have a rechargeable battery in them that will remain plugged in via their own AC Adapter. I personally dont like to use my portable gadgets that have rechargeable batteries while they are plugged in. Here is the link to the manual: https://www.ihomeaudio.com/media/uploads/product/files/iBT16_IB.pdf
1025666
Hi Jen, We have only used it plugged in. My husband thinks you can charge it and use it while charged. I will tell you it has saved us a towing expense on 3 occasions. Twice with a dead battery. So dead....it wouldn't charge. Once a bad alternator. We used the quick charge function and it worked like a charm so that we could get it to the shop. Good luck.
1249350
It is not recommended to run it while plugged in. Like most rechargeable products, it it intended to run from only the battery. Properly charge up the battery before use, let it discharge and then recharge.
1961034
Sorry for getting back to you very late...I plugged the AC adapter into the light and it did turn on, but this does not say that it is running off the adapter and not just the battery. I would suspect it was running off the adapter. I could experiment and drain the battery then do this again. I modified my light by replacing the internal 750mAh battery with two external 2000 mAh batteries. Each will keep the light going for about 1:45 mins for a total of about 4 hrs of use. That is good for my long ghost hunts.