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Renogy 12v 100Ah Lifepo4 Lithium Iron Battery $503.99 ($491.39 with eBay Plus) Delivered @ Renogy eBay

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Renogy 12v 100Ah Lifepo4 Lithium Iron Battery $503.99 ($491.39 with eBay Plus) Delivered @ Renogy eBay
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donkcat on 03/06/2022 - 21:54 ebay.com.au (660 clicks)
Last edited 04/06/2022 - 09:57 by 2 other users
PLUS20EPLUS22E

Decent deal on well regarded Renogy 12v battery
Will Prowse tear down here https://www.youtube.com/watch?v=aahHWaV6Zdk&t=289s

Renogy Smart Lithium-Iron Phosphate Battery 12 Volt 100Ah
Auto-Balance: Connects multiple batteries in parallel safely without internal state non-uniformity issues.
Ultra-Safety: The battery management system (BMS) provides comprehensive protection to the battery and manages the charging/discharging process wisely.
Uncompromised Quality: State-of-the-art battery cells ensure a lifespan of more than 4000 cycles, 100A continuous discharge current, and a wide range of operation temperature.
Communication Port: The RJ45 communication ports enable data transmission to meet the needs of different usage scenarios.

Rated Capacity: 100Ah Insulation Resistance: 500V DC, ≥ 10 MΩ
Operating Charge Temperature: 32~131°F/ 0~55°C Maximum Continuous Charging Current: 50 A
Operating Discharge Temperature: -4~140°F/ -20~60°C Maximum Continuous Discharging Current: 100 A
Voltage Range: 10~14.8 V Communication Port: RJ45 (RS485 Protocol)
Nominal Voltage: 12.8V Storage Temperature: -13~149°F/ -25~65°C
Connection Method: Parallel Cycle Life: ≥4000 Cycles @ 80% DoD
Dimensions:11.4 x 6.8 x 7.4 inch / 289 x 172 x 187.5 mm Weight: 26 lbs. / 11.8 kg
Certifications: UN38.3, MSDS, UL1642 (Lithium Cell) Terminal Size: M8x1x20mm
Protection Rate: IP54

5-year material and workmanship warranty

Original Coupon Deal

Electrical & Electronics Battery Renogy

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closed Comments

    • donkcat on 03/06/2022 - 22:26
      +9

      Not really comparing apples for apples with a no name brand on kogan with 2 years warranty vs 5, 2000 cycles vs 4000 cycles, 100Ah max discharge vs 50 etc etc

  • reductive on 03/06/2022 - 22:35
    +1

    How many of these do I need to build a DIY Powerwall? And how likely is it to burn down the house in the next 10 years/4000cycles?
    Only slightly joking, any respected info on the matter would be appreciated.

    • SirDale on 03/06/2022 - 22:56
      +5

      Each of these batteries have 12V x 100Ah = 1200Wh = 1.2kWh

      A Tesla has 13.2kWh batteries, so for raw capacity you would need 11 of these.

      These can deliver 100A continuous at 12V, so (very roughly) you could deliver 65A at 240V.
      240V at 65A = 15.6kW (Tesla can do 5.8kW continuously). However this would no doubt make for hot electronics and use up your power quickly.

      If you reduce the power out it would last longer (obviously!).

      All of these calculations assume no power losses - I'm no engineer, but I'd be surprised if you got more than 85 - 90% efficiency coming out.

      • schquid on 04/06/2022 - 00:12
        +5

        You wouldn't want to parallel that many, at max draw you would be at 1.1kA - firmly in bus bar territory and dangerous to DIY due to the difficulty in arresting such a high current DC arc. Even at 1mOhm you'd still be sinking 1.2kW into waste heat at that draw.
        Beyond that you'll also suffer high losses in the inverter at high currents.
        You'll achieve better efficiency at higher voltages, lower ohmic and conversion losses, which means series connection. The BMS in these doesn't appear to support series connection natively, so they're not a great fit. You would need an external balancer, or a BMS that supports series management.

        • SirDale on 04/06/2022 - 11:41

          Which is why I wouldn't recommend me as an electrical design engineer!

    • lysp on 04/06/2022 - 18:41
      +1

      Best way to make a DIY Powerwall is to use a set of rack batteries in parallel.

      These are 48V, so equivalent of 4 of the above batteries in series.

      3 of these racks in parallel will get you 15kwh for about $4500 USD (~6200 AUD) not including delivery.

      So for the cost of a Powerwall, you can get a 30kwh version using 6 rack batteries.

  • wrxant on 03/06/2022 - 23:35
    +1

    Been waiting for an offer on these. Thanks @donkat

  • IndependentDuck on 03/06/2022 - 23:42

    Good deal! How does this stack up to the Voltx 100AH deal on ebay for $376? (https://www.ebay.com.au/itm/294558546349?mkcid=16&mkevt=1&mk…)

    • LowRange on 04/06/2022 - 00:23

      While i dont know how it compares to the Renogy, but the VoltX is an excellent budget lithium with good cells and bms. But do note the VoltX will only provide 50A of continuous charge and discharge, but the Renogy will do 50A of charge and 100A of discharge.

      Not a huge deal when simply running fridges, lights etc but it's something to note if you are chasing a battery for really high draw applications.

    • lulzenberg on 04/06/2022 - 13:05

      That model cannot do parallel, this one should be able to though https://www.ebay.com.au/itm/275323542907

      The one i've linked above is, i believe, the actual 'new' version with their 'new' logo that was sold at ALDI.

  • kacak on 04/06/2022 - 09:24

    Awesome price for the 100Ah as well as 50Ah. Don’t think it’s ever been this cheap. If you’re getting the 100Ah smart version, remember to also get the BT-2 Bluetooth module, really handy for monitoring

  • [Deactivated] on 04/06/2022 - 09:34
    -1

    Just bought a Bluetti EB70 instead of one of these ($939)

    • Lebofly on 04/06/2022 - 09:57

      Sorry to hear

    • Flyerone on 04/06/2022 - 10:29
      +1

      RIP

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