Oh, and most BMS in LFP batteries report state of charge numbers that
are calibrated via full charge/discharge cycles not by absolute voltage
measurements. So you get different batteries reporting different states
of charge unless they are all top and bottom balanced together...
Signature
Some chargers will behave...
On 1/4/24 3:34 PM, TJ Trout wrote:
Chargers aren't designed to have a linear load (wisp) and will misbehave
On Thu, Jan 4, 2024, 3:12 PM Robert wrote:
I will look when I get back in the office, but it was similar to
this one:
But LFP batteries all have BMS control with built in LVD. Most LFP
batteries BMS will need a "kick-start" if they go into LVD. The
charger I shared earlier has a LVD kick mode for the first charging mode.
On 1/4/24 1:33 PM, Chuck McCown via AF wrote:
The worst case scenario is when the
The reason I fear not having LVD is that the load becomes the LVD and it
might not have any hysteresis. If a 1kw Tarana cluster pulls 0A at 43.9V
and then 20A at 44V, we would have a problem. That said, I would use a
managed LDM from ICT anyway, so I could easily set load shed voltages to
avoid
Not all lithium is the same... Tesla has careful temperature controls
to manage their packs. And are subject to thermal runaway. LFP
batteries ( I can't say completely ) are not so subject to thermal
runaway. Running them inside a house is much safer than any other
Lithium chemistry.
I
Just the joy of handling lighter batts make lithium well worth it. Not to
mention all the other positive attributes.
From: castarritt
Sent: Thursday, January 4, 2024 9:27 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] -48v power plant
I've also thought about trying just
I've also thought about trying just some basic Meanwell AC/DC supplies with
LFP packs instead of a fancy ICT or other charger. As long as I am using a
power supply that will sag voltage instead of trip offline when max current
is reached, the max current doesn't exceed the LFP pack's rated charge
I'm not sure what you are asking Steve. I am forming multiple adjacencies
with multiple /30 networks on the same interface for ECMP load balancing
purposes on a few links.
On Wed, Jan 3, 2024 at 7:19 PM Steve Jones
wrote:
> are your routing IPs in a bridge with other IP addresses?
>
> On Wed,
FWIW I avoided the "bleeding edge" battery technology and went with the
tried and true batteries. They just sit there and work. I only typically
need a couple of minutes of run time before the LP generator but I have 24
hours of run time (with all 7 shelves in another few years).
On Thu, Jan 4,
We also use ICT and have been running them with both ISP Supplies and Power
Storage Solutions LFP packs without any problems. The only downside is
that the ICT shelf can't read the state of charge or give your an estimated
runtime remaining with lithium batteries. I understand they won't have a
Happy New Year is so 4 days ago.
That is one ugly tamale.
bp
On 1/4/2024 8:12 AM, Chuck McCown via AF wrote:
Sent from my iPhone
Begin forwarded message:
*From:* Jaime Solorza
*Date:* January 4, 2024 at 8:24:34 AM MST
*To:* Chuck McCown
*Subject:* *Happy New*
Hope all is well
Sent from my iPhone
Begin forwarded message:
> From: Jaime Solorza
> Date: January 4, 2024 at 8:24:34 AM MST
> To: Chuck McCown
> Subject: Happy New
>
>
> Hope all is well
--
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I'm starting to get flashbacks for the last time I did this. It wasn't a
pleasant experience. Felt I was oversold un-needed over priced options.
Trying to be more careful this time.
Looking at the LifePO4 stuff and finding a bunch of rack mount batteries, but
they all seem to be China
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