This charger will charge any 12V lead acid battery including flooded, gel and AGM. It is fully automatic and will charge at a rate up to about 4A until the battery voltage reaches a preset point at which it will switch to a very low current float charge. If the battery voltage drops again the charger will begin charging until the voltage once again reaches the cut off point. In this way it can be left connected to a battery indefinitely to maintain full charge without causing damage. An LED indicates when the battery is fully charged.
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Part
|
Total
Qty.
|
Description
|
|
R1, R3
|
2
|
330 Ohm 1/4W Resistor
|
|
R2
|
1
|
100 Ohm 1/4W Pot
|
|
R4, R5, R7, R8
|
4
|
82 Ohm 2W Resistor
|
|
R6
|
1
|
100 Ohm 1/4W Resistor
|
|
R9
|
1
|
1K 1/4W Resistor
|
|
C1
|
1
|
220uF 25V Electrolytic Capacitor
|
|
D1
|
1
|
P600 Diode
|
|
D2
|
1
|
1N4004 Diode
|
|
D3
|
1
|
5.6V Zener Diode
|
|
D4
|
1
|
LED (Red, Green or Yellow)
|
|
Q1
|
1
|
BT136 TRIAC
|
|
Q2
|
1
|
BRX49 SCR
|
|
T1
|
1
|
12V 4A Transformer
|
|
F1
|
1
|
3A Fuse
|
|
S1
|
1
|
SPST Switch, 120VAC 5A
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