This is the charge controller included in the Harbor Freight 45W solar panel kit. The housing is a very nice aluminum extrusion which is also used as a heat sink for the electronics.
There are the following outputs on the unit:
- 5V USB
- Cigarette Lighter for the power inverter
- Cigarette lighter for 12 VDC
- 3.5mm jack for 3 VDC
- 3.5mm for 6 VDC
- 2x xxmm for 12 VDC
Model number of PCB: TPS-545-4A-02
Component List:
U1- ST LM393N - Dual voltage comparator
U2
U3 - not populated
U4
U5
Q1
Q2
Q3
Q4
Q5
Q6 - not populated
K1
K2
K3
9V - not populated
L-B-
3V
6V
USB
LED1
B-B+
C1
C2
C3 - not populated
C4 - not populated
C5 - not populated
C6
D1
D2
D3
D4
D5 - not populated
D6
D7
D8
D9
D10
D11
DZ - not populated
F1
F2 - to external ATO fuse
L1 - not populated
L2
L3 - shorted
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21 - not populated
R22 - not populated
R23 - not populated
R24
EL 817 Optocoupler
Update (May 11th, 2015):
I've discovered another website with more information on the controller as well as schematic. Please see the links below.
http://www.kiblerelectronics.com/corner/ccii_29.html
http://www.kiblerelectronics.com/corner/HF_charger_sch.pdf
Hi thank you for this post. I just ran into it today. This will help in my project. I also obtained the schematic I am working to changing the charge voltage from 12.5 to 14.0 DC max. As you know charging a battery unit to 12.5 is not efficient. Batteries now days can handle up to 14.0 volts DC. This allows more power time than 12.5. I will give you my results when I am complete. For now its a back burner project as I am not using my RV right now. Thank You Marc Rosas
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