Will it drain the battery if left on and if so what kind of unit won't drain the battery?
214167
I bought this for my wife to use in the classroom so it is always plugged in to an outlet. We've never used it in the car so I don't yet know what effect it might have on a battery. Sorry.
1717755
Sorry, I have no idea - I have had my unit for quite a long time and batteries seem to be fine still - I would assume it will not function at all if batteries are too low. Wish I could be of more help.
270380
Don't worry about it not shutting off people. The display itself has almost no drain on the battery. It is the memory that stores your data that is the culprit. If your battery is lasting less than 6 months then change brands. I have had mine (two of them) for over a year and have only replaced the battery once. Its a great device and works fantastic. Enjoy it and don't get so hung up on the battery, or if the unit "turns off"
1787637
I have had mine in use for several months with no issues. It is off all the time when not in use so I am not sure what would drain the battery. A friend of mine has one going on three years old and has never mentioned issues with any part of it. One of the reasons I bought this one.
1472571
Absolutely not. Unit operates when plugged . Once you unplug ,if turned on ,starts operating using the batteries.
1186406
I really dont know for sure. But I can tell you I accidentally left it plugged into my car plug in for a few days,It did not drain my car battery. I really like this unit
2081706
Yes, it will but the drain would be very minimum. If your battery is strong, I would not worry about it.
674614
No, it will remain on until the battery dies. Then you will need to plug it in and recharge.
55419
When not in ise, the unit should be switched to the "off" position. It only needs to be plugged in for charging once the battery is dead--keeping it plugged in constantly will deplete the battery life (same as a cell phone).
1014411
Hi, it does shut down so it doesn't draw off battery power. I made mine I to a portable meter for installs and that saves my portable battires.
452591
specs for the unit say .6A no load (standby) current draw so eventually it would pull battery dead if you did not have any charging on your battery bank, probably not a bad idea if leaving un-attended for long periods to have a battery disconnect for the inverter so you don't have some glitch that would allow inverter to possibly short and start a fire.
1421622
I do not know from personal experience the answer and we did not leave it plugged in at night but depending on the temperature in the car the unit holds a cool temperature very well and we often left it for 6 to 8 hours disconnected because I had a borrowed car and was afraid it might draw down the battery. We really liked the unit. It is ideal for a road trip.
1164837
You could leave the unit plugged in until you need it but it's not necessary. It holds a charge for a very long time. You won't be disappointed. I purchased this for my husband three years ago for Christmas. He still says this is his favorite present, EVER!
1368124
yes it will still power whatever its plugged into and if power is being used it can drain the battery
634538
No, it requires the sun to charge and does not store charge. It won't contribute to draining your battery so you can keep it plugged in.
1350113
The unit gets cold very fast (even freezing). I haven't tested how long it stays cold after I turn it off. I leave it on in the car as the unit only uses energy when it needs it. It doesn't drain the battery like the cheaper ones when you leave it on.
880180
Garry - i'm not 100% positive (like 75%), but pretty sure that the OBDII comm shuts down shortly after most cars are turned off & I believe that this device (powered by OBDii) will also shut-off and thus not drain the battery.