Re: [AFMUG] Lithium lead acid replacement batteries

Thu, 29 Oct 2020 08:19:03 -0700

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:[email protected]] On Behalf Of Bill Prince
Sent: Wednesday, October 28, 2020 12:37 PM
To: [email protected]
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 <[email protected]> wrote:

 

On Wed, Oct 28, 2020 at 10:11 AM Harold Bledsoe <[email protected]> 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 <[email protected]>
Date: Wednesday, October 28, 2020 at 11:44 AM
To: 'AnimalFarm Microwave Users Group' <[email protected]>
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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