VRLA chrager using microcontroller

Thread Starter

id_ruben

Joined Oct 27, 2009
7
ADC reads the voltage on the battery (VRLA 12V / LC-R127R2NA Panasonic).
If the battery voltage is below 11V then the microcontroller turn on the SCR. if the battery voltage is greater then 14.4V the microcontroller turn off the SCR.

Need Help:
Is there a better way to charge VRLA baterrey ?
Is using a 18V on the secondary transformer will damage the battery?
What the mean by "constan voltage charger"?

Thank

 

wayneh

Joined Sep 9, 2010
17,495
Is there a better way to charge VRLA baterrey ?
Adding temperature compensation would be "better". It's also possible that the charging rate is too large for the battery and needs to be limited. But in general charging a lead acid battery to a voltage target is a valid strategy.
Is using a 18V on the secondary transformer will damage the battery?
No, that should be fine. You need the driving force anyway and could not use less than 15V or so.
What the mean by "constan voltage charger"?
What part don't you understand?
 
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