8.0mm Charge Controller

  • Model: 91301
  • Shipping Weight: 2lbs
  • Manufactured by: Goal Zero (Ship from zip 84604)

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This charge controller connects between a GOAL ZERO solar panel and a 3rd party 12V lead-acid battery, to monitor the charging of the battery. The controller comes with pre-installing wiring so that usage is plug-n-play.

Solar panels this controller is compatible with include:
Boulder 30 Solar Panel

This charge controller is not included in any product. Can be purchased as an add-on.

What's in the Box

1 x 8mm Charge Controller


Charging Input

1 set of general-purpose screw terminals charging input. Comes pre-installed with 8.0mm for receiving Boulder solar panels
15-29V inputs voltage range. 10 Amp max charging current (150W)


Charging Output: 1 set of general-purpose screw terminals charging output. Comes pre-installed with colored alligator clips, for clipping to any 12V lead-acid battery terminals.
10A max output, regulated by internal PWN charge-controller circuitry.
Auxiliary load output. 1 set of general-purpose screw terminals for driving a light or other small load.
11-14V, 10A max (120W) output, directly from the attached battery. Disconnects at 11V, to protect the battery.


PWM charge controller.
  • Three charging stages
    • Bulk state charges the battery up to 70% at a maximum rate
    • Absorb stage finishes the battery charge at a slow rate
    • Float stage keeps battery charge topped off and ready to go. This state is safe for long term active storage.
  • 10mA idle current draw
Three LED indicators
  • Solar panel ok: green
  • Battery ok: yellow; blinks when charging.
  • Battery fail: red; battery cannot be charged.
Switch for controlling Auxiliary output.

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