Will this drain the battery if nothing is plugged in?
937864
It does have a slight draw on the battery over a long period. It could take a few months to reduced the battery's charge. Just take out the fuse when you store the bike for long periods.
937865
I have had one of these wired onto my bike for several months and have not had a problem with it draining my battery. But I also keep all my bikes on battery tenders.
1766032
It has to be plugged in to work, but it works very well on dead batteries as well as keeping batteries charged in vehicles that don't get driven often.
1293934
Not always, would burn it up. I do leave it plugged up sometimes when I use it if power gets low with no problem.
2081706
Yes, it will but the drain would be very minimum. If your battery is strong, I would not worry about it.
1788950
most cars have the 9v outlet tied into the ignition, so it's not powered when the car is not running. Therefore, it won't drain your battery at all.
242457
The real answer is yes. It will but how long is the question. without a device the power draw will be small, a few milliamps, it'll take a few months for most batteries. with a device attached, quite a bit sooner. hours, days or weeks, all depends on the draw from the device, and the size of your battery. be safe, unplug. and trickle charge if it's going to be more then a few days.
1250380
Not at all. Leave the batteries in in case you need them. Plug it in when you can.
643298
Yes this will work. I have my blue lights plugged in this. No battery drain.
1699133
Yes, with this particular model. As long as a quick-connect does not have an internal shutoff it will drain.
1162189
It Doesnt. You will need to unplug it or else your battery will drain just like mine.
1069075
According to the manufacturer, no because the power output level should not affect the battery. However, the dead panel ended up draining my battery.
1133224
Not really it's going to be a waste of energy . I plugged it 2 hours before using it.
2084285
No, you have to plug it in the charge it, but then you unplug it when you use it.
1046865
No the charger won't drain the battery -- Nor will it maintain it... Batteries will naturally slowly lose their charge while sitting unused -- Plus sometimes dependent on where the batteries are being used (boat, Car etc.) there might be a slight discharge to circuit leakage . clocks, lights, and the like. Just plug your charger back in a day or two before you use the vehicle .
279841
Have used plugged in no difference noticed in power noticed except when low battery...
2171116
Yes, it must be plugged in to be used. The good thing is, it won't run out of charge during use.
2267854
Yes, but not overnight. If left connected for weeks or months it will. That is why it is on the battery tender quick connect plug. You unplug this device and plug in your battery tender to keep the battery fully charged and ready to go while it is in storage. If you don't have a battery tender, you probably don't have the connector that this plugs into, thus you probably shouldn't be getting this.