I have 60KW of EG4s and am seeing more and more posts of failing BMSs on
them. They are showing up on the LFP auction sites for $500 with failed
BMSs in higher and higher numbers. Making me nervous of my rack
reliability..
On 5/7/24 11:36 AM, TJ Trout wrote:
they would work fine at that voltage, but not 100% charged which is a
good thing. Regular power supplies cannot divert current like a
DRS-480 for example, so if your system goes to 0% and dies, when AC
power is restored the power supplies will need to charge the batteries
and power your load at the same time, if the minimum voltage of your
equipment isn't met then you might still be offline for some time
while the batteries charge up to the minimum equipment voltage...
lifepo4 batteries are a great investment IMO and cheaper than lead if
you look at the whole picture but I would avoid cheapy amazon
batteries that are likely to have crap BMS that will fail. Stick with
EG4 or other known good mfg.
On Tue, May 7, 2024 at 10:52 AM Robert <i...@avantwireless.com> wrote:
While I have used, read about, studied, and debated about LFP
batteries,
one thing I cannot find an answer to:
Is there a problem with using a regular voltage supply set to 13.4
volts
( 90% ) charge to maintain a LFP battery for backup power use? Is
there a need to buy a specialized battery charger like a samlex to
charge an LFP battery?
Note that I am currently using regular power supplies to maintain
a bank
of LFPs. I just don't know if I am setting up for an issue in the
future...
Self heating 12v batteries have reached a new low with one just
becoming available on Amazon for $229 and, with a netonix, that
would be
a pretty simple system.
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Thank you,
TJ Trout
Volt Broadband
209.480.3122 Cell
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