Monday, April 26, 2021

Circuit Schematic of Charger 12V - 3 to 6Ah Sealed Lead Acid (SLA) Batteries

Eltronicschool. - This is one of the Battery Charger for Sealed Lead Acid batteries that very suitable for dual level float cum boost charger with pre-charge for 12V from 3 to 6 Ah. The main component used in this project is BQ24450 IC from Texas instruments.

In this time we will give you the global descrription and also schematic of this Charger 12V - 3 to 6Ah Sealed Lead Acid (SLA) Batteries and the last we will give you the link to read more about this project from original article.

Circuit Schematic

Figure 1. Circuit Schematic of Charger 12V - 3 to 6Ah Sealed Lead Acid (SLA) Batteries (Source: https://www.electronics-lab.com/)


Component Part


Description

Circuit schematic like in Figure 1 above is CCircuit Schematic of Charger 12V - 3 to 6Ah Sealed Lead Acid (SLA) Batteries. Based on Electronics-Lab blog describe that this SLA Battery charger project is the right choice if you want to obtain maximum battery service life and capacity, along with acceptable recharge time and economy, constant current, constant voltage, and even charge a deeply discharged battery. 

The project contains all the necessary circuitry to optimally control the charging of valve-regulated lead-acid batteries. The circuit controls the charging current as well as the charging voltage to safely and efficiently charge the battery, maximizing battery capacity and life. The circuit is configured as a simple dual-voltage float-cum-boost charge controller. 

It is configured for charging 3 to 6Ah, 12V SLA batteries with dual-level float-cum-boost charger with pre-charge function and provides 500mA current output. The circuit also helps to charge deeply discharged batteries with pre-charge function. In this function Pin 12 (CE) detects the battery voltage, if the voltage at pin12 (CE) is bellow V-ref (2.3V), enable comparator permits a pre-charge current IPRE to flow from the PRE-CHG pin through Resistor R7 into the battery. 

Once the battery voltage rises above a safe threshold, the comparator disables the pre-charge function and IC performs the dual-level charging operations. Connector CN1 provided for supply input, CN2 battery, D3, D2 operation indictor, Jumper J1 connected to GND. Transistor Q1 requires an appropriate heatsink.

For more information about Circuit Schematic of Charger 12V - 3 to 6Ah Sealed Lead Acid (SLA) Batteries, please read more using this [Link]


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