Review and tour of the used case scenario of the PowMR 10.2 kw hybrid inverter

[@RonthonSi]

Great thumbnail sir, but video all over the place, write a script pointers, memorise it and do better presentation. All the best.

[@powerwall]

Give us some suggestion as well.

[@slifox2752]

Any type of hybrid inverter and lithium phosphate battery combination is suitable for home use… Just look up items on the internet and maybe try Ali express 🤷‍♂️👍

You can charge to 100% with LiFePO4. 3.55V per cell is where Off Grid Garage found the best compromise between capacity and giving the battery a chance to balance above 3.45V (minimum balance start voltage especially for an active balancer). Set your cell low voltage to 2.80 or 2.85V and your max voltage to 3.55V. Should give you at least 5000 cycles....there's no way these batteries will be below 80% their original capacity in 10 years unless the temps in there are over 30C Heat is the real killer of lithium. These cells will cycle daily for over a decade if you keep them between 10 and 25 Celsius. Take a look at the DCS Starting Batteries that people were seeing 50% capacity degradation in after a year or two under the bonnet. Probably the best example of just how dangerous high temps are to the cycle life of a lithium battery.

[@leandrotorquato3606]

Bom sistema sou do Brasil tem um sistema bem semelhante !

[@powerwall]

Ola.

[@slobodanstojanovic8259]

Ne spajaju se baterije od 100A i 120A.

How the heck do you get away with paralleling a 15S and 16S battery? Are you familiar with how the flat charge/discharge curve of LiFePO4? Its so flat in the middle that it makes balancing based on voltage a mess since you want to balance the amount of amp hours in the cells....if a certain voltage say 3.27V...can mean a 100Ah cell has anywhere between 30% and 70% State of Charge then you can't use that 3.00V to 3.45V area to say "these two cells are both at 3.270V so they both must have 60Ah in them" Then there's the resting voltage of LiFePO4 which for these large prismatic cells is usually 3.35V. So if you are max charging to the 15S voltage you'd be at 3.42V on the 16S batteries.....so your absorption could go on for HOURS which would be really bad for the 15S pack. There's just so many problems related to paralleling a 15S and 16S LiFePO4 battery....from max charge voltage to absorption to cell balancing (16S batteries can never get high enough to balance) you really should find a way to put those batteries on separate circuits and use one of those $10 voltage relay boards to trigger the switch from one bank to the other.

[@slifox2752]

Originally brought a PowMR battery… and a year later brought server rack batteries to add on only didn’t realise the internal cell numbers… the original battery was part of a deal and as a beginner, you don’t see the hidden mistakes of such things… I was assuming all!! Batteries of the same chemistry are of the same number 🤷‍♂️

[@darrynpickstone4621]

Buyer beware they dont dont honor warranties for faulty products ??