Question about charging a 12V Lead Acid battery?
Posted January 30th, 2009 by admin 2 Comments »
Hi
I have a question about using the Sealed Acid Battery 12V 20AH (S)
“http://www.batteryspace.com/index.aspPageAction=VIEWPROD&ProdID=2177″
and Smart Charger (3.0 A) for 12V Lead Acid Battery
“http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2799″ at the same time. My question is, I have a device that needs backup power and normal wall power. Can i just connect the battery and the smart charger together to power up my device? I mean when the wall power is provided, the battery will keep charging and discharging to give out 12V for my device. When the wall power is not provided, the battery will discharge for 20Ah. When the battery already discharges 50% and wall power is suddenly provided, does the battery still gives out 12V during charging time?
The loads are 3 different devices.
1) Microcontroller 12V 500mA
2) Sensor_1 9V 100mA
3) Sensor _2 9V 100mA