Laptop Running on a Lead Acid Battery

This situation may occur one day to yourself, Power house die, drop the laptop's internal battery, online car less comfortable in the cabin, and you want to keep online home, here's one solution of the few solutions available to you, in order to stay online. The following are the steps :

Equipment needed:

    1. Laptop DC adapters are commonly used in car
    2. jumper cables to battery
    3. car battery / motorcycle 12 volt All type MF or Conventional Capacity 3 Ah to 200 Ah.

jumper cables to battery

charger laptop Rp.50,000,- = 4 dollar US

How long do the batteries usage:
measurement results using ampermeter picture below shows approximately 4.5 amps so if we use a car battery size 70 amps then the batteries will run out 70 divided by 4.5 amps = 15.5 hours


I hope this info helps and useful

How to make a car battery charger and Motorcycle Battery

Here is the circuit diagram of a simple and straight forward 12 V battery charger circuit with diagram. This circuit can be used to charge all type of 12V rechargeable batteries including car batteries and motorcycle batteries.


Circuit diagram with Parts list.

Notes. 

• At initial stages of charging the ammeter will read about 7,5  to 10 amperes.
• As the battery is slowly charged the current slowly decreases.
• When the battery is fully charged the ammeter reading will be 4 -5 ampere
• Always be careful to connect the charger to the battery in correct polarity. Positive to positive and negative to negative.

step down transfomator 5 ampere

box charger

Diode bridge 35 ampere

Transformator and box charger

circuit battery charger

secondary winding

primary winding

diode 35 ampere and cable

time charging period

I hope this information is useful