[RE-wrenches] EG4 battery OK with Magnum electronics?

[Kent]

Fuzzy memory here. It had to do with a setting that should have been 
adjustable but wasn't. I think the voltage start won't trip until the 
voltage goes below the re-bulk voltage (not adjustable - it was designed 
for lead acid). Obviously it depends on the firmware version, the 
lithium compatible firmware doesn't have that problem.

A Morningstar relay driver makes for a suitable AGS as an alternative.

Kent Osterberg
Blue Mountain Solar


On 8/26/2025 1:17 PM, Jay via RE-wrenches wrote:
> Any idea what the issue is with the ags and lithium?
>
> A buddy had a nightmare situation trying to get that to work, even 
> just with voltage it never worked right.
> Doesn’t make any sense.
> But then I had nothing but problems with magnum and gave up on them.
> I know others here who love them.
>
> Jay
>
>> On Aug 26, 2025, at 2:00 PM, Kent via RE-wrenches 
>> <re-wrenches at lists.re-wrenches.org> wrote:
>>
>>  Mick,
>>
>> I've connected other LFP batteries to the Magnasine. It is possible 
>> to make the charger settings all work but it is difficult to get the 
>> AGS settings right for a start voltage. There is a "lithium 
>> compatible" firmware version for the remote, but good luck at find 
>> one of those for now.
>> The elephant in the closet with the Magnasine is that if the system 
>> goes through a power-on cycle with the remote detached, then the 
>> inverter operates with its default settings.
>>
>> Kent Osterberg
>> Blue Mountain Solar
>>
>>
>> On 8/26/2025 11:11 AM, Mick Abraham via RE-wrenches wrote:
>>> Hi, Mechanix~ A longtime client has a Magnasine 4024 
>>> inverter/charger, PT-100 charge controller, BMK battery monitoring 
>>> kit & the ARC Advanced Remote with 4.0 firmware.
>>> He'd like to upgrade from L-16 floodies to five of the EG4 LL24V 200 
>>> AH batteries in a cabinet.
>>>
>>> I've reviewed the EG4 info for care & feeding, alongside various 
>>> menus in the Advanced Remote manual, and it looks like the Magnum 
>>> setting ranges are compatible. Before shipping out the money,
>>> I'd like to know any feedback from the Wrenches about how things are 
>>> working when these product families are combined.
>>>
>>> At times I've noticed strange behavior with the Magnasine inverters 
>>> during charge cycles. As I recall, the units jump from Bulk to Float 
>>> soon after generator driven charging gets under way. For clients 
>>> with old or compromised lead acid floodies, I've occasionally set 
>>> Float and Bulk to the same target voltage. These are off grid setups 
>>> where the generator noise keeps the client aware that charge is 
>>> underway. Most of these clients don't have the generator 
>>> automated, which is also true for my 2025 EG4 customer.
>>>
>>> I won't try that "Float @ Bulk voltage" trick with lithium, of 
>>> course. Any & all war stories would be welcomed. As always, "The 
>>> Wrench List is the Bomb!"
>>>
>>> Mick Abraham, Proprietor
>>> www.abrahamsolar.com <http://www.abrahamsolar.com>
>>>
>>> Cell phone or for text messaging: 970-946-6584
>>> ᐧ
>>>
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