effecient charger making?

i wanna make a charger for 4v, 0.5A batery
1)just suggest me the value of capacitor and inductor for filter ckt
2) and wat ampere of current should be sent to battery for fast recharging (at safe zone

What kind of battery are you charging? This will determine what you need to effectively charge the battery.

What supply are you using to provide power?
lead acid
lead acid
iam using 230v,50 hz AC ,supply (and using 12 volt transformer to step down( is t trnsfrmr rating is sufficient for fast rechargin?
Ok back to my first question. What kind of battery are you trying to charge. Some batteries are very picky about how they are charged. Others only need a couple of extra volts running into them to charge.
rickharris1 year ago
What sort of battery:

LEad Acid (car battery)
Dry cell (not recommended)
Alkaline call (not recommended)
NiFe cell (Yes they do exist)

electrical sniper (author)  rickharris1 year ago
lead acid
From what supply ?
sry its 230 v
You need a transformer. What kind of battery is it ?
2230 volt,50hz AC suply(steping down using 12 v transfmer,( is the rating f transfrmr is sufficint?