How To Make Auto Cut-Off 12V Lead Acid Battery Charger Circuit. DIY PB Charger

Sam October 20, 2021 9:32 am

How to make a charger with automatic cut-off for 12V PB batteries. (Maks 7000Mah battery)

MUSTOOL MT8206 2 in 1 Intelligent Digital Oscilloscope Multimeter
https://ban.ggood.vip/RvRx
DANIU PX-988 90W Digital Thermostat Adjustable Iron Soldering
https://ban.ggood.vip/RvRz

WARNING: This circuit is for hobby purposes. Its work has been tested, but no long-term repeated tests have been performed.
Charging has the usual risks. Use of this circuit is at your own risk.

Necessary Materials:
5 * 1N5408 Diode
4 * 1N4007 Diode
https://www.banggood.com/custlink/vK3D0WQZEw

1 * 1K 1 / 4W Resistor
1 * 6.8K 1 / 4W Resistor
https://www.banggood.com/custlink/GKvv6WbZy0

1 * 100R 1 / 4W Resistor
https://www.banggood.com/custlink/vD3vawKig9

1 * 0.85R 3W or 2W Resistor. (1R available. Charging slows down a bit.)

1 * 10K Trimpot
https://www.banggood.com/custlink/vmvGaQUWTG

1 * 4.3V 1W Zener Diode (or 4.7V)
https://www.banggood.com/custlink/KGvKBpAiGt

1 * 3300uF 25V Capacitor (or 4700uF)
https://www.banggood.com/custlink/DG3KgJQiKm

1 * 10uF 35V Capacitor
http://bit.ly/2LZMBaC

1 * BD139 Transistor
http://bit.ly/2nuEhWT

1 * 12V Relay
https://www.banggood.com/custlink/vKDG0cAPfr

1 * 5mm LED Red
1 * 5mm LED Green
https://www.banggood.com/custlink/mvK3BrNPqM

1 * 12V Buzzer
https://www.banggood.com/custlink/KmGm0CnFUo

1 * 1A Fuse
https://www.banggood.com/custlink/GmDm4rbPbM

1 * PCB Terminal Block
https://www.banggood.com/custlink/KDGDlnq5KS

Digital Multimeter: https://www.banggood.com/custlink/vKmD0TlCqE
Solder iron welding:
Digital Thermostat Adjustable 90W: https://www.banggood.com/custlink/mv3301OWkA
Digital Thermostat Adjustable 80W: https://www.banggood.com/custlink/vDDKBBDsd0

1 * 12V Min 16VA Transformer

Soldering Iron Stand: https://www.banggood.com/custlink/3KmKQmuk85

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Circuit diagrams: http://bit.ly/2TBuKe1

Volt & Amper Meter Circuit Video:

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