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Topic: lead acid battery charger & backup ideas please (Read 1520 times) previous topic - next topic

lead acid battery charger & backup ideas please

Good day Dangerous prototypes!!!

I am working/developing  in an alarm system , and i have almost all figured out except the battery backup power :

-I want to use a 12V lead acid batery , very common in alarm systems..
-i found some easy to implement trickle charging integrated circuits , which will take care of the battery charging..
-the idea , is the alarm continue to work , even if there is no electrical power in the house..;

the question:
 how can i gently : make the battery start suppling power when power is OUT , and the other way around too?

All ideas are welcome !!

one idea i had :  use a small relay , conected in such way that in the absence of power , will plug the batery right away..

 

Re: lead acid battery charger & backup ideas please

Reply #1
The normal way is to hook the load to the battery, and make sure your trickle charger supplies more than the average load current.

lead acid battery charger & backup ideas please

Reply #2
Wow... Thats great thanks for the input .!!... Any suggestions of trickle charger chip ??


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