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    Fitted a Midi fuse in a Victron Lynx Distributor. Is it OK?

    I've found a workaround to fit Midi fuses into a Lynx Distributor, but I haven't energised it yet. The Distributor is made to hold Mega fuses, but unfortunately they're not available in amperages below 125A, at least not rated for 48 Volt systems. Any problems with this? Here's what I did. 1...
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    MRBF fuses - OK for 48V LiFePO4system?

    Hi - I was thinking of using MRBF fuses on my busbar of my 2P16S off-grid system. I'm planning on charging the cells to a maximum of 3.6V for a total of 57.6V, which is just within the fuse's maximum rating of 58V. HOWEVER, product info also says "The breaking capacity meets the requirements...
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    Please check my *better* design, 48V 225A

    How does this look? I realised that a 100/20 charge controller can feed 48V to the battery while keeping solar voltages below 120V. That's enabled me to switch from 24V to 48V battery voltage, which simplifies everything and reduces currents, compared to my previous design. Cells are new from...
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    Put a fuse in the middle of your battery?

    Where I am, battery standards talk about "arc flash incident energy" to quantify the effects of a short-circuit. A large-cell 48V battery has a high value, i.e. a dangerous arc. Even though there's a fuse at the positive terminal, it's still possible to accidentally short-circuit the negative...
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    48V battery - top balance cells in two batches?

    I've just purchased 32 CALB cells, 163 Ah each. Like the ones in this pic, with the raised terminals. https://www.globalsources.com/LiFePO4-battery/CALB-Grade-A-new-prismatic-cell-3-2V-163Ah-LifePo4-1178960172p.htm#1178960172 I've got a 50A single-cell charger, but not enough busbars to...
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    Single-cell charger 50A from FPV Power - what do you think?

    This doesn't look like a super model or anything, but might be OK for an initial top balance? - Charges constant current, then constant voltage. - User-adjustable voltage and current.
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    Please check my design: 24V 300A

    Please see the diagram below - hopefully it's visible to everyone. 24V battery is dictated by existing DC loads, and 100V solar by local regs. Two batteries in parallel, but either one could run alone. The Batrium BMS apparently can be told whether it's working with 13.4 kWh or half that...
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    Is this a good deal? 400Ah cells for Australian $285

    From a local Aussie company with its own links to China. - No-name cells - Used for backup power systems, just on float. - Company tests randomly, "all 395-400ah" - At 300A, "voltage drops to only 25.6". - 520 x 130 x 80mm - 10.65 kg What do you think?
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    Finding & dealing with a "bad" cell in a 2P8S battery

    I don't have a "bad" cell yet, just trying to understand what I'm signing up for with a "parallel first" 2P8S configuration as the cells age. Eventually one or more cells will develop problems. Is my understanding correct? (a) If a cell develops an internal short-circuit (say a slow short with...
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    24V 300A LifePO4 & signaling to solar MPPTs

    Hi - first post here! I'm planning a battery to supply loads up to max. 5 kW, with the nominal voltage 24V rather than 48V for various reasons. I'm aiming for high quality and safety. Planning to use Victron MPPT charge controllers, and it seems a good idea to signal them to switch off when...
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