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Old 17-10-2020, 07:01   #1
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AMPS LifePO and Balmar SG200 monitor

Hi,
I have an AMPS 400 AH lithium battery and a Balmar SG-200 monitor.
I have the inputs for the monitor set correctly (400A capacity and LifePO battery type) but am not getting accurate information.

The battery was new this summer and has been hooked up to the battery monitor since new.

https://marinehowto.com/balmar-sg200...ttery-monitor/

https://lithiummarinebattery.com


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Old 17-10-2020, 08:50   #2
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Re: AMPS LifePO and Balmar SG200 monitor

How many cycles has the battery bank been through? The SG200 only "learns" the battery's parameters when it is cycled. Sitting on float will not allow the SG200 to "learn" the battery.
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Old 17-10-2020, 11:10   #3
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Re: AMPS LifePO and Balmar SG200 monitor

Make sure to update to the latest firmware on the Balmar gear
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Old 17-10-2020, 16:23   #4
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Re: AMPS LifePO and Balmar SG200 monitor

Quote:
Originally Posted by CharlieJ View Post
How many cycles has the battery bank been through? The SG200 only "learns" the battery's parameters when it is cycled. Sitting on float will not allow the SG200 to "learn" the battery.


The boat was at the dock and being lived aboard all summer, but not connected to shore power. Charging from 800W of solar.
So it was being cycled daily with fridge, induction cooking, charging computers/phones. But not deeply discharged. Does the SG-200 need to be discharged to nearly dead and then fully charged repeatedly to self learn?
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Old 17-10-2020, 16:27   #5
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Re: AMPS LifePO and Balmar SG200 monitor

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Originally Posted by marty9876 View Post
Make sure to update to the latest firmware on the Balmar gear

Is this the most current version?
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Old 17-10-2020, 16:58   #6
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Re: AMPS LifePO and Balmar SG200 monitor

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Originally Posted by mrybas View Post
Is this the most current version?
No, update your app from the App Store then update the firmware on the devices. Do the Gateway 1st

Made a big difference for me
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Old 17-10-2020, 17:23   #7
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Re: AMPS LifePO and Balmar SG200 monitor

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Originally Posted by marty9876 View Post
No, update your app from the App Store then update the firmware on the devices. Do the Gateway 1st



Made a big difference for me


Will try that. Thanks
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Old 18-10-2020, 07:25   #8
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Re: AMPS LifePO and Balmar SG200 monitor

@mrybas
Yes, you need to deeply discharge your bank several times for the SG200 to "learn" the bank characteristics.

If you haven't been following this very long CF thread, I suggest you review it: https://tinyurl.com/y294q77h

From RC Collins (Marinehowto.com) excellent article on the SG200:
Quote:
Patience is a Virtue:
TIP: Once your SG200 is installed & programmed please be patient. The SG200 requires your bank to be deeply-cycled quite a few times in order for SoC and SoH to hone in. The deeper these cycles are, the faster the SG200 can learn the bank. Don’t be afraid to take your lead acid bank to 11.7V, if you want to speed up the learning process, just be sure you can recharge to 100% on the next cycle. Shallow cycling will just prolong the time it takes for the SG200 to “learn” bank behavior such as SoH.

Quote: “Rod, I have had my new SG200 connected for almost four weeks and am still getting three dashes for SoH? We have not been able to leave the dock yet but was hoping to know my banks condition before we do?”

***The SG200 can’t learn SoH while tied to a dock charging 24/7***
The SG200 also cannot determine SoH while not charging and resting. To test this, we connected a lead acid battery to the SG200 and let it sit for two and a half months, with no charging or discharging, other than the SG200’s connection to the battery. At the end of 2.5 months the SG200 was still showing three dashes — for SoH. Bottom line? The SG200 is smart enough to know whether you’re cycling or not. The good news is that the SoC prediction, at the end of 2.5 months, was accurate to within 3%, while just sitting there.
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