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    Battery Voltage Low in One Cell

    Have 4S 280ah LiFePo4 battery, Overkill Solar 4S, 12v, 120A BMS. The inverter is not working. Checked cell voltages, 2.4, 3.2, 3.1, 3.2. Did the BMS shut it down due to the low cell voltage? Should I pull the buss bars and charge the low cell or replace it? Purchased cells Nov 2020, have not...
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    Tuffiom Did I Toast it?

    Could not find the manual, hooked it up to my EarthX lithium battery. Voltage reads 12.7 but nothing on the A scale. Any suggestions? Did not want to wait until the ordered Optimate charger arrived. Guess I fixed it.
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    Battery Wiring Warmer, Is this Smart?

    Wired the battery warmer in before the BMS, so the solar panel can warm the LiFePos cells if the heating pad temperature controller calls for it. Of course if the BMS temp sensor is above the the cutoff temp the cells can warm the package. Should I put a fuse between the Epever charge controler...
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    Negative Terminal Through the Case

    Have a battery box, BMS, 4 eve cells in series and want to connect negative through the box. Got a switch on the positive side. Do not want the cable ripped out if the case gets loose.. Bought a stainless bolt to bring negative through the case, but that does not seem quite right, any suggestions?
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    How To Calculate Max wattage from Inverter Considering BMS Limits?

    Have a 4S 280ah LiFePo4 battery, Overkill Solar 4S, 12v, 120A BMS and a 12v to 110v 1500Watt pure sine wave Inverter. Looking for theoretical max That I can get out of the inverter considering usual conversion inefficiencies. Was thinking of going to a Daly 250A BMS but then I saw the vid of...
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    12v Solar Panels, Obsolete?

    Got the renogy DCC50s but my renogy 300w 24v solar panel is too much for the controller. Should I ditch the idea of a 12v solar panel? Suggested 12v panels... Grape popped up, 2 200w 12v, they will fit. Doing shopping, excuse me.
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    Renogy DC Home & BT-2, Problem Solver or 2 Be Avoided?

    Reading about problems with the BT-2 and DC Home. Please speak up on this. Picked up a Renogy Charger/MPPT RBC50 but the voltage settings for LifePo4 batteries are less than satisfactory. To adjust settings means buying a BT-2 dongle and DC Home app. Is this worth the trouble? Other Renogy...
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    Determining Polarity

    2 wires coming down from the solar panel, both Black. Using a voltmeter, how do I determine polarity? Assuming there is sunlight on the panel and it is not covered in snow...
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    Metric Way of Stating Battery Capacity

    A lot of us have 280Ah cells, but how is the battery capacity stated in Metric terms? Viewed an Australian fellow on Youboob that used other terms, he made sense.
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    How To Assemble

    Gathered 4 ea. 280Ah cells, taped together, 120A Overkill Solar BMS, Heating Pad, Temperature Controller and Insulated box. The Overkill BMS came with instructions but the heating pad is beyond me. Anyone have a suggestion or 2?
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    Battery Cable

    Is 2awg cable enough for a battery charger no more than 5-6'? No more than 20 amps @12v charging.
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    Stuck In The Middle

    HAve 2 solar charge controllers, 2 sets of batteries, AGM golf cart and 280ah LifePo4, 1 300w solar panel mounted, a bunch of wire, connectors, turn off switches, buss bars, lights, blah, blah, blah. Feel stuck. Finding someone professional competent is like pulling hen's teeth. Everyone is very...
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    Seeking 200-300w Solar Panel Deal

    Checked out Home Depot, where I bought the last Renogy panel. $300+ San Tan solar is often mentioned, checked them out but I am not in Arizona. $2-300 shipping Checked out Craigslist, $190 for 345w poly, local Hanwha Q.Plus L-G4.2 345, used Also emailed Maine Solar, not too far away. Had to buy...
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    Ordered 4 cells 280ah From Shenzhen Basen, CN

    Ordered 9/6/2020 from Shenzhen Basen, CN via Alibaba.com Payment processed in Delaware Estimated delivery time 30-35 working days Fedex Tracking # received 9/9/2020, estimated delivery 9/16/2020 from Hawthorne, CA Will post how it goes
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    Advertised BMS Capacity 120A, Inverter Needs More Amps

    Ordered a Overkill BMS 120A for 12v 4 cells. The concern is the Inverter, a 1500w Aims with surge will require more amps. Is there a way around the BMS limits?
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    Circuit Breaker Sizing and maybe BMS Bypass?

    3 circuit breakers planned. Sizing is 125% of design max. 1. Coach battery circuit 70Amp 2. Solar controller 70Amp 3. This one is where my question begins. DC fuse load and 1500w Inverter. What size circuit breaker? The battery is 280AH, has a 120Amp BMS. Isn't 1500w 125Amps @12v? Do I need...
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    Crimped Copper Lug Size, BMS, Battery Terminal and Inverter

    Going to order a BMS from Chargery. They offer 1/4", 5/16" and 3/8" crimped copper lugs. Also re building the board for my solar setup. Would like to make it really sanitary, guess I should do all the 12v power supply stuff the same size?
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    Lifepo4 3.2v 280Ah, Groogled found on on Alibaba and Aliexpress

    Looked for good reputation score. Found Daly Factory Store $561.91 for 4 delivered with copper buss bars...
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    Aims 1500w Pure Sine Wave

    Have been shopping, made a misstep with a 2000w modified sine wave inverter. Went smaller to 1500w for pure sine wave and the size of the battery planned and likely amps drawn. Chose Aims PWRI15001210s because of the UL certification which I do not understand and the 2 year warranty.
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    280AH LiFePO4 too much in Small Package?

    Just wondering if the cells on sale are pushing the size limit too soon. As in is there might be too much energy in that cell for the current (pun not intended) tech? Really enjoy the enthusiasm on this forum. Trying to learn...
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    Nomenclature of Cell Arrangement

    How do I describe the way cells are arranged? Or where do I look it up? Thanks
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    2 6v AGM vs 100ah LifePo4 and Cold

    2 Duracell Golf Cart batteries, 6v GC2 AGM, spec sheet says it yields 103 @1 amp hour rate, the lowest on the sheet or 220 @ 100 amp hour rate, highest on the spec list. I know temperature affects output, battery chemistry has limits. Now the total draw down ah on these 2 6v AGM is less than one...
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    Maine (Cold) Batteries

    Started out with FLA 6v Golf cart then switched to 6v AGM but notice that they give off gasses too. It gets very cold up here, what works best in the cold but does not give off acid fumes? Also go to AZ in winter, so it could get hot too. Or should I just go lithium and get heaters for them run...
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