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
<[email protected]> 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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