How To Make Automatic Battery Charger 25 A

I've share about how to make a simple battery charger on my previous article. That simple battery charger will always charge the battery although the battery is on full condition. In this way, the electric current will still flow on the battery. Finally, the battery will be overheated and broken. You must read How To Charge A Battery.

The way to avoid electric-current overflow, we need a voltage regulator. The electric current will be stopped when our battery voltage is equal to battery charger's voltage that we've been setting.

And we can see that's there is many regulator voltage. In this case I choose SCR as regulator voltage to be the main component in automatic battery charger. Below is How To Make Automatic Battery Charger 25 A.

First SCR is 25RIA120 that can work in 25 Ampere electric current. He is the main gate to flow the battery charger current, when the gate is opened.

The second SCR I choose is BT151 that can work until 5 Ampere electric current. This SCR function as 25RIA120 opener.

By this scheme, we work on 5 - 25 Ampere current. I hope this article will helped everyone need.

NOTE :

1.       we can play on #1 SCR to manage the current.

2.       We need to set TR 4K7 until we get the suitable cut-off voltage output we needed.

Below is the automatic battery charger scheme, thank you.