User Manual
•  4 LEDs cycle back and forth from right to 
  left: Charging
•  All 4 LEDs constant on: Charging is completed
•  The 1st one from the left hand side is constantly on: 
  no solar panel connection detected, battery 
  connection is good
•  All 4 LEDs ash: Good solar panel connection, 
  no battery connection detected
5.5mm x 2.1mm female to bare wires 
(solar panel output) adapter (included)
Battery Terminal Clamps
INCC1205 PWM Solar controller
General Introduction: 
Operating Instructions:
Connecting the Charge Controller’s Input 
to a Mercury27
(sold separately) Portable 
Solar Charger:
Using the Charge Controller to Charge a 
Battery with the Terminal Clamps:
TROUBLESHOOTING
CARE AND MAINTENANCE
Connecting the Charge Controller’s 
Input to a Solar Panel:
Charging Indicators:
Thank you for selecting the Instapark INCC1205 
Charger Controller, which is designed to use for 
12V battery maintenance, charging RVs, speciality 
vehicles, antique and classic cars, marine deep cycle 
batteries, motorcycles, lawn mowers, tractors, ATVs, 
snowmobiles, personal watercraft and more. With 
proper care and use, it will give you years of 
dependable service. Please read and observe all 
safety warnings and cautions and this entire user’s 
instruction manual, before installing or using this 
device. The instruction manual should then be 
retained for quick reference whenever the unit is used.
Ensure that all installation and operating instructions 
and safety precautions are understood and carefully 
followed by anyone installing or using the charger.
Plug the charge controller’s input female connector 
directly into the Mercury27’s 12V output
1.  Plug the 5.5mm x 2.1mm female to bare wires 
  adapter to the charge controller’s input.
2.  Use a Philips screwdriver to loosen the screws 
  for both the positive and negative terminals on 
  the adapter.
3.  Plug the solar panel’s positive wire (red) into the 
  positive terminal of the adapter.
4.  Plug the solar panel’s negative wire (black) into the 
  negative terminal of the adapter.
5.  User the screwdriver to tighten the screws.
•  Check that the charger is properly connected to a 
  solar panel or a Mercury27 portable solar charger.
•  Check that the solar panel or Mercury27 is exposed 
  to direct sunlight.
•  If the battery to be maintained has fallen below 2 
  volts, the battery cannot be recharged with this unit.
•  Make sure that output connection is secured.
•  Check correct polarity connections.
With proper care and minimal maintenance, the Solar 
Charge Controller will provide years of dependable 
service. For maximum performance, 
manufacturer recommends:
1
.  Storing the unit in a clean, dry, 
  cool place when not in use.
2.  Cleaning the unit casing and cords (as necessary) 
  with a dry (or slightly damp) cloth. Ensure that unit is 
  completely disconnected from battery and power 
  source, before cleaning.
3.  To maintain the operating condition and maximize 
  the life of the charger cords, always coil them loosely 
  for storage. Do not wrap them around the unit or 
  crimp them with a tight band.
1. 
Connect the 2-pole output on the charge controller 
  to the 2-pole connector on the wire with terminal clamps
2.  Connect the positive clamp (red) to the positive post 
  of the battery.
3.  Connect the negative clamp (black) to the negative 
  post of the battery.
4.  Observe the green LED lights to make sure the battery 
  is charging properly.
5.  Monitor the unit periodically.
4 Green LEDs – Charging Indicator
Red LED – Battery Indicator
•  Constant on: battery connection is reversed
Unit Not Charging
WARRANTY
Our company provides customers with a warranty of 18
months from the date of purchase.
WARNINGS:
•  Do not use charger if cords have been damaged in 
  any way — call Technical Support 
  toll-free at (800)716-0100.
•  There are no user-serviceable parts in this unit.
•  Do not open the unit. In the event of malfunction, 
  it must be returned to manufacturer for professional 
  testing and repair. Opening the unit will void the 
  manufacturer’s warranty.
CONTACT US
For any inquiries or comments concerning our products
please send an email to info@instapark.com and we will
respond as soon as possible. If there is any
quality-related issue with the product, you may request a 
REPLACEMENT OR REFUND by submitting a request form 
at www.instapark.com/contactus/
Package Includes
•  Instapark™ INCC1205 12 volt / 5 amp Solar Charge 
  Controller
•  Battery Terminal Clamps
•  5.5mm x 2.1mm female to bare wires 
  (solar panel output) adapter
•  User manual
INCC1205 12 volt / 5 amp 
Solar Charge Controller
Instruction
Manual
Toll Free : 1-800-716-0100
Phone: 562-946-8677
Fax: 562-946-8680
2.5”
3.5”

