Recent content by rolfbartels

So I know it's been a long time since my last post but I have been waiting on the South African Postal Service to deliver my BMS, in the end I could waitno longer as my 1st bank of my powerwall was live and I needed protection, so I ordered another set of DiyBMS v4.2 controllers and modules but...

Thank you, for your help

I am looking to understand the bulk and float charge settings I need to set I want to have the max voltage 4.05 and the Min voltage 3.4v I have set the following setting 05 - use 26 - 28v 27 - 28.35v 29 - 23.8v 29 I get as that's 3.4v per cell cut off, 26 and 27 I'm not sure do I set the...

Thanks, If it weren't for guys ike you, Pete, Average Joe and everyone else in this forum we would not be as well informed to setup and be safe, its a community like this that makes this all work

So I have eventually made some good progress, and am really close to turning on my first bank, I have installed a NH-00 Fuse Disconnect switch with 80A fusesfor protection andsafety, I'll be fusing the positive line of each bank through the Fuse Disconnect, these will converge...

Beautiful works a treat, the other thing I like is that it's off line so you won't loose you config or packs ! Thanks Wolf

Thanks for the response guys, I will have 19kw when done in about 3 weeks time I only consume maybe 10wk a day, so yeah Ill drop my max and in crease my min. thanks again for the help

Hey Guys, I need a little help, I have a Axpert 3KVA 24V inverter, been running on Lead Acid till now, I am about to switch over to a4 x7s80p 18650 power wall and just want some validation on the settings I need to configure on the inverter, This particular inverter does have a Li-Ion option it...

So I have used rePackr to build my first 14s80p packs and ea. worked out to 180ah per cell pack, I am now wanting build my next 14s80p and I have more than enough cells, when I use rePacker there is no option to specify both cells in parallel and pack capacity, the idea is to have rePackr build...

Slow wins the race !! So the Battery Shed arrived from galvanizes I started cladding it with a product called cromadek flat sheets, these are 0.5mm sheets which are galvanized and then powder coats, and have a 25yr life guarantee from rust. on the inside I add insulation to keep the direct...

Yeah so the breaker will have a shunt trip attached for panic, like cell over or under voltage or temperature issue ect and this will isolate all the battery banks from the inverter. TheNH-00fuses are 1 use only and are there in the even the bank does something stupid and short out and instead...

Thanks Crimp daddy So I am definitely wanting it for the shunt trip, and the 125A DC breaker is 15KA interrupt, I guess I was trying to understand is I just needed an isolator with the shunt trrip rather than a overload circuit breaker,

thanks Wolf, so i understand a 40A breaker will trip if my inverter load is 80A which is why the MCB needs to at least match the inverter, but for clarity, should the current tripping function of the MCB be sized to the inverter, so my inverter can do 100A, So do I install a 100A MCB or a...

Quick question, the breaker and shunt trip, are you also using the breaker for overload protection, should I be sizing the breaker to the size of my inverter ?, or are we only concerned for the purpose of a shunt trip, my banks will also be protected with HRC fuses.

So with regards to MCB and fuses, I have all but got or know what I am going to do, my only confusion is the main DC breaker. So I have a 100A inverter with 30A charge, I will be installing 3 x 7s80p 18650 banks. At each bank I will be installing a NH-00 40A Fuse, on positive terminal u and...