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    The joys of testing.

    If in "test" mode The OPUS will charge them then discharge them then charge them. all automatically No need to use the "charge" mode then change the mode to "discharge" The OPUS quick test (IR) is not really usable inconsistent results Later floyd
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    Building my first pack, need some help.

    It is not recommended to use a any powerwall without a BMS. But it has been done. Monitoring the voltage: would need to check Total battery pack voltage and the cell voltages. Several times a day. There are other BMS's besides Daly perhaps one of the other BMS would work and many are less...
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    New to 18650s, from Assam, India.

    Welcome, Many have started out the same way.if you haven't read the FAQ thread https://secondlifestorage.com/index.php?forums/frequently-asked-questions.42/ read it will answer many of your questions. later floyd
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    Tube Battery Adapter for 18650 cells. Do I need discharge protection?

    There are 2s bms's, battery protection boards. Probably would be smart to include one in the design. later floyd
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    The joys of testing.

    Charging the cells in bulk to 3.6v will really shorten your turn around time. Charge them then place in your Opus's on test mode. 3.6v to 3.7v happens fast. Even faster if you remove the cells after they finish the discharge portion of the test mode. Then Bulk charge the cells back up to...
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    Hi from Belgium, EU

    Welcome to the addiction soon you will start dreaming of all things related to a powerwall. On a slightly less grand scale than Off shore wind electric production. Later floyd
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    Help with cell and other questions

    You will need a 18650 charger in addition to the testers listed below. You can build a charger with TP4056s and a 5v power supply. There are many pages on the tp4056 and variants...
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    Help with cell and other questions

    Continue to research lots of reading here Cell database https://secondlifestorage.com/index.php?pages/cell-database/ testing procedures https://secondlifestorage.com/index.php?threads/cell-testing-procedures.1807/#post-9199...
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    I have it up and running, finally!

    Hope it fixes the problem. 9 days? I have had items shipped from the east coast to west coast USA that have taken longer. Later floyd
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    What brand battery?

    sanyo look in here https://secondlifestorage.com/index.php?pages/cell-database/&fsort=1&fbrand=Sanyo&fform=&fkeys= Later floyd
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    I have it up and running, finally!

    Is the setup the same as in the photo with reliable inverter? There looks to be a wall on the lefty hand side of the inverter might be space there to hang it. Later floyd
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    I have it up and running, finally!

    Do you still have the reliable inverter perhaps use it to power your most critical needs? Later floyd
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    JK BMS

    Also read https://secondlifestorage.com/index.php?threads/jk-b1a24s-jk-b2a24s-active-balancer.9591/ later floyd
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    JK BMS

    From what i read ICC-PI is just software. Most is included the ISO provided in the following thread by daromer https://secondlifestorage.com/index.php?threads/esperyd-s-raspberry-pi-project.999/...
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    Need some help - GTIL SUN inverter limiter wiring

    cheap 4-life is his nick here forget what it is on facebook
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    Need some help - GTIL SUN inverter limiter wiring

    Cheap 4-life is a moderator over at Solar Grid Tie Inverter with Limiter USA Users https://www.facebook.com/groups/1455824754596738/ he can probably answer your questions. later floyd
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    JAAAAAACKPOT !!!

    Congrats, make sure the switch located on the back side of the Opus inside the case is set to 3.7v. I have an Opus 3400 setup for testing LiFePO4 cells using 4 external 26650 cell holders. I have tested several hunderd A123 LFP 26650's. later Floyd
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    Resources for Cylinderical LiFePO4 cells

    SAB 60280 LiFePO4 https://www.alibaba.com/product-detail/Bulk-Stock-SAB-Cylindrical-60280-3_1600293225037.html midway down the page you will find a partial datasheet. later floyd
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    Resources for Cylinderical LiFePO4 cells

    Do you have a datsheet for These cells? I agree, cells with screws or threaded studs are much easier to put together into a battery pack. later floyd
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