[RE-wrenches] Harris lithium battery as drop-in replacement for Outback RE2200 AGM?

[Darryl Thayer]

forgive me I am not the brightest bulb.  But if you are replacing the
Outback 2200 RE with 2100 AH and about 1100 AH usable, or @  51V then 56
kWh with Lithium, 62 kWh, Do you have the charging capacity to charge at
280 amps?  This is to allow full use of the solar array.  One of the things
I have found with LA batteries at high charge rates causes shortened
battery life.  Check with Harris for the maximum charge rate.  You will be
charging two in parallel the battery BMS will have to handle the BMS in
each battery.  Also, check the top balance current of the batteries
to assure the low cells can be balanced in the perhaps 4 hours. The charge
controllers will limit on voltage and the batteries will be in top balance
current, is this ok with Harris?  You will use multiple charge controllers,
I try to set the voltages a little lower on two of the charge controllers
to create a tapered charge.

On Thu, Nov 4, 2021 at 10:50 AM <scot.arey at solarcentex.com> wrote:

> Does anybody have insight as to the Harris lithium battery and its use as
> a replacement for a RE2200 AGM that needs replacement?
>
>
>
> Our setup is dual Radian 8048s for a full off-grid home with 14KW of
> solar. System has performed fine but the AGMs are not doing well holding
> charge and customer is ready to move to lithium.
>
>
>
> For those with background, did you use the multi-battery controller? Was
> the Mate and its BMS capability sufficient for lithium use?
>
>
>
> Here is the battery we are planning on and will use two of these : RELi48-31.0
> - Harris Battery - Industrial & Commercial Battery Supplier
> <https://www.harrisbattery.com/product/reli48-31-0/>
>
>
>
>
>
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