ICP Solar 21 Amp Charge Controller 10064

by ICP

Product Features

• 21 Amp charge controller provides reliable overcharge protection for 12-volt systems
• Ideal for use with RV, marine or residential solar systems
• Built-in LCD display allows you to check battery voltage and solar array current
• Lead acid or gel cell selector switch
• Measures 7-1/2-by-4-1/4-1-inch

Product Details

Product Manual [348kb PDF]

• Shipping Weight: 1 pounds
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00008IHT6
• California residents: Click here for Proposition 65 warning.
• Item model number: 10018
• Average Customer Review: 3.5 out of 5 stars  See all reviews (2 customer reviews)
• Amazon Best Sellers Rank: #115,802 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Amazon.com Product Description

The ICP Solar 21 Amp charge controller provides reliable overcharge protection for 12-volt systems. It also incorporates many options that help you better monitor your solar system's performance. The built-in LCD display allows you to check battery voltage and solar array current to see how much power you are actually getting. An easy-to-read LED bar graph lets you know your battery condition at a glance. The attractive face plate even allows for flush mounting on any wall for a distinctive finish. It also features reverse polarity protection, and a lead acid or gel cell selector switch. Measuring 7-1/2-by-4-1/4-1-inch, this charge controller is ideal for use with RV, marine or residential solar systems.

Customer Reviews

Most Helpful Customer Reviews

14 of 14 people found the following review helpful:

4.0 out of 5 stars ICP 21Amp Controller for Solar Cell - Recommended, October 8, 2003

By 

Jerry "Jerry" (San Diego, CA) - See all my reviews

This review is from: ICP Solar 21 Amp Charge Controller 10064 (Lawn & Patio)

This item works well, and installs easily. Telephone support is supurb! I purchased this to supply a second bank of batteries off of a single 100 watt Plug & Play package that also included an identical item.
The controller has Light emitting diodes that allow you to monitor charge action and battery level. They work great.

On the down side, the supplied mounting bracket is plastic. It appears to be something that could easily break. The mounting holes were sized for a number 4 screw (kind of small!), but there was double sided foam tape also supplied. The input terminals could be heavier, and with longer screws to allow heavier wire. Placing more than one ring lug on the terminals, or a wire heavier than 10 guage (up to a 4 guage is sometimes recommended) can be difficult.

I suggest also downloading the instructions for their digital 20 amp controller as this contains information not found in the 21 amp controller manual. www.icpglobal.com

Installation is generally plug and play.... not much to it.

3.0 out of 5 stars I have the ICP 21 Amp and 7 Amp charge controllers, September 12, 2007

By 

Dark Wing Duck "Gravity Rules" (San Leandro) - See all my reviews

This review is from: ICP Solar 21 Amp Charge Controller 10064 (Lawn & Patio)

I don't know how this product compares but I have developed an opinion on this product. I have it charging a backup batteries from solar panels. I had trouble with it draining the batteries at night. It cost me over $200 in ruined batteries. I finally realized that it was draining the batteries and went to radio shack, bought a rectifier diode so it could only charge and not discharge through the "charge controller". The rectifier diode was rated for 50 amps but it passes any positive current without clipping to charge the battery. It fixed the problem but really... I should not have had to do that. Otherwise it works fine. If already use one of these, I highly recommend the diode to cut down on losses.