Can a 9 volt battery be used for backup power?
810885
This solenoid is rated at 12 vdc / 1.2 amperes for nominal operation. A fresh 9 vdc "transistor battery" is rated 9 vdc / 0.565 A-h. This is just sufficient to operate the solenoid, but the drain on the battery will be significant and I won't hold for long. You will be much better off with a small 12 vdc battery, both from operating voltage and from the rate of drain. You can find 12 VDC/5 A-h and larger batteries on the Amazon site.
1878757
the battery is for backup only..... in case electricity goes out. You still need to wire it.
1916729
Sure, I plug it into a 12v back up battery I charge with a solar panel. But you could use an outlet.
94499
I have connected it straight to a 9v battery and it works fine. It's not as bright as hard wired to a 12v system, but it does work.
1781267
Yes, it does work with a 9v battery. It will not reach full potential with a 9v battery.
635069
For Backup in case power is lost. But, I wouldn't buy it--it doesn't work well
607339
I have not used with a battery back up system. This is 120v ac only. No option for 12v DC.
1798743
I would think you could. You would just have to splice into the backup wires to get the power needed since you don't have a two package like on a pickup truck.
1976352
No. But the back comes off easily for the 9V, or you can send it power and it can daisy chain that power to a second device if you want it to.
1304354
Not directly. The motors are 3 volt motors and if you provide higher voltages, the motors will be damaged over time. The kit comes with a battery holder for 2 AA batteries. If you absolutely need 9 Volts, you can either look for 9 volt replacement motors or use an inexpensive voltage converter. These guys http://www.pololu.com/ have a great selection and they may even have replacement motors.
1098835
Yes. Battery worked well for 6-9mos. then lost all power and could not be re-charged.
723329
The power supply is an option. It uses a 9 volt battery (not supplied - no surprise there). When the power supply is used, the battery functions as a back-up.
1250500
Yes, you can. It's not safe unless you have it plugged into a UPS though, keep that in mind. If power cuts or dips you'll have to start over.
2073030
These are good units. I have bought 4 sets and have served me well. They should work with a 9volt battery. Battery will only last about 8 hours max. I have not done it on these units but on all my others I have I do not see why it would not work. If you want I can try it and see. Let me know if you want me too. phh57@att.net
1992667
I highly doubt that they would. Lights like these often draw quite a bit of power. The power supplied that are usually needed are the same used by computer monitors. I believe a 6 amp rating is the minimum. So unless you are talking about a non-standard 9v battery, you would likely run into issues.
500362
Actually you do not need a battery backup for these items. A high quality Surge strip will cover them. The Battery Backups are really meant for computers, phone systems and medical devices that need to stay on during a brief power outage. I use one in my office for the Cable Modem (voice and internet), the Router, my main office PC, and the cordless phone base. I have a couple of these 350's in another office on the phone CPE (basically a modem), the phone switch and internet router. If you do get one think about what gets plugged into the battery side and what is on the surge protected side.
1342508
Hi Mike, unfortunately there is not a battery backup as the solar panel is matched in charging size to a single battery.