I have been looking into how to set up the MorningStar Mppt-60 for
LiFePo2 batteries now that a 12v 200AH is $1000 and makes the price very
equal to doing 6V golf cart batteries from Interstate. Reading about
them says that they want constant current at 40 amps to 80% charge (
some say 60% ) and then the last 20% at constant voltage until full.
But that like most Li batteries it's better to not charge above 80% ( is
that the same loss of capacity as not discharging below 20%? for 100%
)... So for the morningstar they have you use the High voltage
disconnect to stop charging at a certain voltage and leave it at that.
No Float, No Equal, No Absorb...
On 10/29/20 8:17 AM, Bill Prince wrote:
I don't really know Adam. I know that multi-cell LiFePo batteries need
(and usually include) a BMU to manage the states/flow between cells,
and I know that LiFePo batteries don't want (or need) a bulk or
equalization. Beyond that, I think they just need a different charger,
but I don't know how sophisticated it needs to be.
bp
<part15sbs{at}gmail{dot}com>
On 10/28/2020 3:12 PM, SmarterBroadband wrote:
Hi Bill
I thought with the drop in replacements the BMU handled the charging?
*From:* AF [mailto:af-boun...@af.afmug.com] *On Behalf Of *Bill Prince
*Sent:* Wednesday, October 28, 2020 12:37 PM
*To:* af@af.afmug.com
*Subject:* Re: [AFMUG] Lithium lead acid replacement batteries
LiFePo (Lithium Iron Phosphate) is considered very safe. Completely
different charge profile vs lead acid though.
bp
<part15sbs{at}gmail{dot}com>
On 10/28/2020 12:32 PM, Steve Jones wrote:
my biggest concern with lithium is im a dolt and dont know for
sure which variants arent prone to explode
On Wed, Oct 28, 2020 at 2:11 PM TJ Trout <t...@voltbb.com
<mailto:t...@voltbb.com>> wrote:
https://batteryhookup.com/
On Wed, Oct 28, 2020 at 10:11 AM Harold Bledsoe
<hrbled...@outlook.com <mailto:hrbled...@outlook.com>> wrote:
I’ve used the Merit Sun batteries for other
applications. They work well and have a BMS. That said,
they cannot be used with a lead-acid charging profile.
Another option would be to disable the charger on the UPS
(if possible?) and use a separate LiFePO4 charger for the
batteries. That will give you more options.
*From: *AF <af-boun...@af.afmug.com
<mailto:af-boun...@af.afmug.com>>
*Date: *Wednesday, October 28, 2020 at 11:44 AM
*To: *'AnimalFarm Microwave Users Group' <af@af.afmug.com
<mailto:af@af.afmug.com>>
*Subject: *[AFMUG] Lithium lead acid replacement batteries
Is anyone using Lithium replacements for lead acid it
there UPS setups. Our standard setup is 4 12v 100 amp
hour external batteries on APC or Alpha UPSs. I read
that some of the LiFePO4 12v Lithium batteries are drop
in replacements for lead acid. Are all with built in
BMUs considered drop in?
Any one doing this? What make and model have you used.
Price? Also interested to hear if anyone has purchased
though Alibaba? Prices look good, but are they too good
to be true?
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