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Old 03-16-2012
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Re: Xantrex Echo Charger Rant

Originally Posted by JeremyP View Post
that's what I'm interested in finding out more about. This Sterling Power ProCharge-B echo charger. Anyone install one or own one?

I have their combi and the thing is quiet and I like it. I was thinking about adding an "echo charger" or an "on the run" boost charging source for when I'm not plugged into AC.

ProCharge-B opinions anyone?
Decent low cost external regulators. The wiring is a little more tricky and the manual leaves a lot to be desired, but they work.. I generally prefer the options that Balmar offers in an external regulator but the Pro-Charge B is a good bare bones value. The ProReg D is a better unit than the Proreg B for not that much more.

You might also consider the Sterling A2B or Alternator to Battery Charger that replaces an external regulator but does not require customizing the stock alternator to tap into the field circuit. Simple hook-up with all the benefits of an external reg. The only down side is the large form factor...

The A2B's are pretty cool if your stock alt is already sufficiently sized..

Sterling A2B Charger
-Maine Sail / CS-36T

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Last edited by Maine Sail; 03-16-2012 at 09:29 PM.
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Old 05-07-2014
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Re: EchoCharge Bench Tests 02/24/11

Originally Posted by btrayfors View Post

Happened to have a spare EchoCharge on hand, so did my own bench tests this morning.

These are indicative, not definitive since I didn't have the "right" batteries or enough time available.

For the "house bank", I used two 6V gelled golf-carts in series. These are 14 years old and are in pretty fair shape. They were not fully charged.

For the "start battery", I used a small 18AH West Marine AGM. It's about 3 years old and in fair shape. Also, not fully charged to begin the test.

Voltmeter was a Fluke 189. Ammeter was a Mastech MS-2108 clamp-type.

At the start, the resting voltages were 12.736 for the gels and 12.672 for the little AGM.

Note that voltages thruout are a bit higher than they would be with flooded cells, since both gels and AGMs typically have higher voltages.

Here are a couple of pix of the setup, and the results.



Voltage delivered to the "start" battery was never more than 14.4, even when charging voltage was near 15.

The multiple readings at the same indicated time were because I varied the charging voltage to see what the EchoCharge would do. Then, between times, I left the charging voltage at 14.8.

Not sure what all this means, yet.

My EchoCharge had the Heart Interface name on it. Xantrex may or may not have fiddled with the circuitry over the years....don't know for sure.


I know it didn't matter for your test, but so that others know, you should not, according to Xantrex, use the Echo Charge with different type batteries as you did. At least that is what they say.
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Old 05-07-2014
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Re: Xantrex Echo Charger Rant

Bill just used what he had on hand for a quick test. Flooded and Agm have virtually the same charge voltages so can and often are mixed. Gel charging voltages are quite different though.
Living aboard in Victoria Harbour
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