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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems
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Old 04-07-2010
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Link 20 alternative energy mode F05

Hey Gents,

Playing around with my link 20 and trying to set it up to use bank 2 as the alternative energy mode. I set all the functions correctly and hooked a charging source to it and it is counting down AH like it usually does. Has anyone used this feature? Just curious if this is normal behavior or not, it works great regularly with 2 banks.

I retired some old batteries that were bank 2 and it does not like having a voltage sense for bank 2 with no voltage so I figured I would hook it to the charger and see how many AH I pull in an average week.

Regards,
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Old 04-07-2010
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It shouldn't be counting down AH for your charging source but up as stated in the manual (page 18). I use a Link 10 but I understand this feature of the Link 20 and see its advantage.
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That is what I thought and what the book said. It is still counting down like a battery was discharging. It looks like it set the CEF to 100. I double checked the shunt sense wires to make sure I didn't screw that up, unless you are supposed to reverse them.
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Old 04-07-2010
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Reference source

arghhh, post your question here: SailboatOwners.com - Latest forum activity

One of the "regulars" there did just that for his solar panels. We had a long telephone discussion about it, and he's pretty much the expert on that feature. He's usually "around' on that site and would be glad to help, I'm sure.
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Old 04-07-2010
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Sorry if this sounds too simple - don't mean to insult but . . . .

Are you sure there isn't a minus sign before the Ah reading? Any Ah's that have been taken out of the bank are recorded (obviously) and the number increments but with a -ve sign before it. When a charge source is attached the number decrements until it hits zero (again I apologise if this is all too obvious).

Mine does exactly as it should - no matter what the charge source. And over time I have gotten the settings quite right so when the Ah reading gets to zero, the RHS green LED flashes to say the bank is fully charged.

I ssume the charge source is running through the shunt? Because maybe the decrementing number is real currnet draw, not charge amps.
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Old 04-07-2010
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Quote:
Originally Posted by Omatako View Post
Sorry if this sounds too simple - don't mean to insult but . . . .


I ssume the charge source is running through the shunt? Because maybe the decrementing number is real currnet draw, not charge amps.
No worries, it's usually the small things that trip us up in the end.

I have 21 120AH AGM batteries on Bank one and my IOTA charger hooked to bank 2. There is no load on the bank right now so all current from the charger should be charge amps. I am seeing equal current from the charger and to the batteries, just the charger part is negative where I think it should be showing positive amps. I double checked the shunt wires to make sure they are correct.

That setup makes sense to me. Thanks for the link Stu, I will put a note up there and hopefully get some insight.


I snapped a picture as I was putting the batteries in the rack.
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Old 04-16-2010
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see: Link 20 alternative energy mode F05 - SailboatOwners.com
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