Sealed Lead-Acid Charger

Posted on Jul 14, 2012

Here`s how to make a good charger for a sealed lead-acid battery (this will NOT work with NiCad batteries) that`s faster (because it allows more current into the battery initially) and safer (because it uses lower voltage when the charging is finished). The battery can be left plugged into this charger indefinitely, and it won`t bother it in the slightest. In fact this is the `float` or `standby` charging method recommended by battery manufacturers.

Sealed Lead-Acid Charger
Click here to download the full size of the above Circuit.

Below is a circuit based around an L200 chip. (Note to US residents: the L200 is more easily available in Eurpore than in the US. I hear that they are available in the US from BG Micro. If BG has run out, you may consider an equivalent made from an LM317

Leave Comment

characters left:

New Circuits



Popular Circuits

Audio Millivoltmeter
Universal-motor speed control
Mini LOGGER V1.0 Block Diagram
DIY ECC802S (12AU7 / ECC82) Vacuum Tube SRPP Preamplifier
40mhz rf amplifier circuit
Sensor Alarm using thyristor circuit
discrete robot schematics
Solar-Powered High Efficiency Battery Charger
AC lights dimmer with triac
FET audio mixer circuit
Audio Equalizer
XTR106 no external transistor circuit diagram of work
A circuit diagram of a phase comparator
Capacitance compensation circuit diagram of a power protection