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  • BYD Lithium NMC Recommended State of Charge

    I have One Solar 48v 100ah NMC Battery (BYD). its connected in parralel with recommended charge at 0.2c. Found out its 13s My concern is, would be better to charge it up to 100% or just 90-95% like LiFePo4? And are nmc really that combustible? This is connected to my Deye 5KW hybrid inverter...
  • Anyone installed their LiFePO4 battery in a small Container and attaining acceptable temperature?

    Good day, A lot of thanks to Mr Prowse and i ventured to the LiFePo4 from lead acid batts. Here is the background of my Setup: 24v system - 8 pc 3.2 Sinopoly LiFePO4 (second hand) 90amps. got it for (est 300 USD total) with a 8s BMS (Daly generic i think) - did bottom balance then top...
  • MPPT controller for offgrid system in parallel with Grid tie Inverter

    Hi, can anyone comment on my planned project. So i have a total 1,200 watts panel which supplies my current 1Kw Grid tie system. I want to add another MPPT in parallel with my Grid Tie, both getting power from the Solar Panel. Will this work? My thoughts: both grid tie and mppt will get...
  • Ground wire size for a 340 Watt panel on a metal roof

    Hi, 1. Wanted to ask for help for an off grid system im building. Am hooking a 340 watt Poly panel to my 24v system. Want to get your advise on what is the the accepted ground wire size ( Panel is about 4 meters away from the ground). 2. And another thing i would like to ask, if the panel...
  • My 1st DIY LiFePo4 system for Hot and Wet Environment.

    Shifted to LiFePo4, I dont like the Lead acid batteries The system is for temperate region, wet and dry season only. The 24v system consist of: 8 x 3.2v Sinopoly Battery 90ah LifePo4 (2nd hand) Bms generic of Daly, 60/30 Victron smartsolar 100/20 24v to 12v 10a converter 1 x 340watts JA...
  • Anyone built a 24v 100 ah bank using 32650?

    Planning to replace my damaged Gel Deep cycle battery. Am planning to use the 32650 LiFePo4 3.2v 5ah battery. Seen videos but the max i noticed were less than 40ah built, just wondering if there is a limit for this type of battery. Have checked the 8s BMS for this battery but am not sure...
  • Anyone with Victron 100/20 MPPT having issue with Load Disconnect

    I purchased the unit at Amazon, 1st unit didnt disconnect at the set algorithm Load Disconnect. I set it up to disconnect at 12.4v (jumpers were removed as advised), i use it to just light up multiple 12v lights, almost 6 amps in total. Was surprised when i reviewed the App and my battery...
  • Can you Ground both Solar Panel and Off-Grid inverter to 1 Ground rod?

    I have 3 x 400 watts panel in series and a 3000 watts off-grid toroidal inverter. Not sure if these 2 needs to have its own ground rod. Solar panel has its own DC SPD and Inverter its AC SPD. Ground rod is 5/8". 10 feet, copper Thanks!
  • Deye 5kw Hybrid with 2x 48v 100ah Lithium NMC

    Upgraded my system. 1st day of operation. But 1st time using this NMC batteries. Is it best to charge it 100% or just 95% like LiFePo4?
  • Anyone tried combing 2 or more BMS in series or Parallel?

    Hi, just wanna do some DIY project. Am planning to use LiFePo4 3.2v 5ah 32650 batteries. Design would be combining 5 batteries in parallel to make a 25 ah bank, then 4 series to complete a 12v 25 ah battery bank with a 4s BMS. My concern is, can i make another same 25 ah battery bank with...
  • Anyway to estimate remaining lifecycle of a LiFePo4 (second hand)

    I bought some second hand Sinopoly 3.2 100ah batteries (but sold as 90ah, marketing strategy). I found out is 100ah based on the model. Anyways tested the capacity and its >90ah, playing between 91-93ah, at least it is still >80% of 100ah. But is there anyway to estimate remaining cycle for...
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