Need a new LiFePo4 48v 100ah x 3 battery bank for my XW6048 inverter

pcguy2u
pcguy2u Solar Expert Posts: 151 ✭✭✭
edited February 9 in Off Grid Solar & Battery Systems #1
And I need a recommendation for a manufacturer with good reviews and products in general.
Trying to match the form factor of the existing AGM bank, Concorde 12v 258 Ah x 4 which look like this one:

The problem is that I have no reviews on any of the ones I've seen, sans a couple on Amazon that had some 1 star ratings re quality/longevity and support/warranty.
Anyone made such a conversion?  Appreciated any thoughts here...
TIA, Nick
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Comments

  • Wheelman55
    Wheelman55 Registered Users Posts: 246 ✭✭✭
    #2
    Discover AES 130 ah batteries x 3 on our XW6848+ for quite a few years. 

    Great combination. High end. Makes for a closed loop with the Schneider gear. 

    You won’t be sorry. 

    I believe that Dave has many of these installed for his happy clients, like us👍
    Off-Grid in Terlingua, TX
    5,000 watt array - 14 CS 370 watt modules. HZLA horizontal tracker. Schneider: XW6048NA+, Mini PDP, MPPT 80-600, SCP. 390ah LiFeP04 battery bank - 3 Discover AES 42-48-6650 48 volt 130ah LiFePO4 batteries
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  • pcguy2u
    pcguy2u Solar Expert Posts: 151 ✭✭✭
    #3
    are they rack mounted?

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  • Wheelman55
    Wheelman55 Registered Users Posts: 246 ✭✭✭
    #4
    We have Discover’s original lithium batteries which are wall mountable or simply sit on the floor. Ours sit on the floor. 

    Discover now offers rack mountable batteries per this link. These rack mountable batteries were not available when we put in our system. 

    All of Discover’s products are top tier.

    Here’s the link:

     https://discoverlithium.com/solar/homeowners


    Off-Grid in Terlingua, TX
    5,000 watt array - 14 CS 370 watt modules. HZLA horizontal tracker. Schneider: XW6048NA+, Mini PDP, MPPT 80-600, SCP. 390ah LiFeP04 battery bank - 3 Discover AES 42-48-6650 48 volt 130ah LiFePO4 batteries
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  • Graham Parkinson
    Graham Parkinson Registered Users Posts: 171 ✭✭✭
    #5
    I've been talking with Discover and they kindly provided me with the parasitic (self consumption) energy use of their new rack mount Element batteries.  Way lower than the competition due to Discover's use of bistable contactors in their BMS instead of always power consuming relays or questionably robust FETs.  If of interest I can dig up the data that they supplied.  Some Li batteries have BMSs that will self discharge the battery in a couple of weeks or less ....

    Offgrid in cloudy PNW

    Full Schneider system with 18 REC 420W panels, 100A-600V controller, XWPro, Insight Home, six Discover AES Rackmount 5kW batteries, Slimline enclosure, Lynk II, AGS, H650,  H2200, H3000 (On Victron AutoTrans with Gen Line 2 wire AGS on AC1), Kubota 4500, Onan 7500 (on second AGS and AC2).

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  • Wheelman55
    Wheelman55 Registered Users Posts: 246 ✭✭✭
    #6
    Please share the data. Thanks. 
    Off-Grid in Terlingua, TX
    5,000 watt array - 14 CS 370 watt modules. HZLA horizontal tracker. Schneider: XW6048NA+, Mini PDP, MPPT 80-600, SCP. 390ah LiFeP04 battery bank - 3 Discover AES 42-48-6650 48 volt 130ah LiFePO4 batteries
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  • Graham Parkinson
    Graham Parkinson Registered Users Posts: 171 ✭✭✭
    edited February 16 #7
    Hi Wheelman55

    Re: Data on self consumption of Discover Element Batteries:

    Derek Pettingale, VP Products for Discover told me:  

    "The contactor is bi-stable so it doesn’t require extra holding current in either state. The ON state loss is 7.49mA."

    By my calculation this is 0.3595 W at nominal 48V battery voltage, which means that a 5 kW battery would last  14,700 hrs or 613 days if only this load was present.

    I was separately told that the total parasitic drain is about 3% per month, meaning that the battery would run itself down without load in 33 months (1000 days), so roughly comparable (at least in order of magnitude!)

    Offgrid in cloudy PNW

    Full Schneider system with 18 REC 420W panels, 100A-600V controller, XWPro, Insight Home, six Discover AES Rackmount 5kW batteries, Slimline enclosure, Lynk II, AGS, H650,  H2200, H3000 (On Victron AutoTrans with Gen Line 2 wire AGS on AC1), Kubota 4500, Onan 7500 (on second AGS and AC2).

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  • Wheelman55
    Wheelman55 Registered Users Posts: 246 ✭✭✭
    #8
    Thanks GP.  Did he happen to mention anything about the parasitic drain of the earlier Discover AES 42-48-6650?
    Off-Grid in Terlingua, TX
    5,000 watt array - 14 CS 370 watt modules. HZLA horizontal tracker. Schneider: XW6048NA+, Mini PDP, MPPT 80-600, SCP. 390ah LiFeP04 battery bank - 3 Discover AES 42-48-6650 48 volt 130ah LiFePO4 batteries
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  • Graham Parkinson
    Graham Parkinson Registered Users Posts: 171 ✭✭✭
    #9
    No, sorry - there was no mention of specs on the 42-48-6650s.  I'll PM his email address to you though and you can ask him

    Offgrid in cloudy PNW

    Full Schneider system with 18 REC 420W panels, 100A-600V controller, XWPro, Insight Home, six Discover AES Rackmount 5kW batteries, Slimline enclosure, Lynk II, AGS, H650,  H2200, H3000 (On Victron AutoTrans with Gen Line 2 wire AGS on AC1), Kubota 4500, Onan 7500 (on second AGS and AC2).

    · Share on Twitter

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