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Makes complete sense! Is the EG4 manual downloadable? Thanks

I currently have x3 solar panel strings with a VOC 480V ISC 15amps for each string. Currently it's set up to sell back to the grid via Solar edge inverter. I'm considering going off grid using the grid only as back up power. I'm considering purchasing x8 EG4 48V batteries and x3 Eg4 6.5K...

Hi there, It's up and running but I still need to remove the factory installed ground and negative on the kholer generator, just not sure which is the right wire. .I was thinking of using a NC contactor on the ground and negative bonding in the main panel, and run a 120v to the contactor which...

Hello, I have the following set up: 2 growatt 5kw offgrid inverters 48V lithium batteries (56KWhr) Kholer 12RES generator line 1&2 and ground connected in parallel to both growatts. Used as back up and slight charge to batteries when there's no solar charge and low battery voltage. My issue is...

Hello, could someone please tell me if my generator set up below is correct. In particular ground to neutral bonding . I'm a little confused whether the generator needs to have the ground connected at the generator source to an independent grounding bar. Its currently connected to the neutral by...

Quick update! X4 14s 48V system all completed and working like a dream. It was a challenge and a great learning curve. Thanks to all who contributed, I really appreciate the help.

Thank you for such a quick reply! Yes on low voltage I want the generator to start charge and run the house. It starts but as soon as it receives power from the generator it stops. I shut off tge generator breaker and tested and the contacts remained closed, only when it receives power does it...

Has any one experienced a similar problem with the growatt dry contacts closing as it should when voltage low but as power is introduced to the inverter from the generator it opens the contacts and stops the generator. If so, please let me know the fix. Thanks

It looks very neat. The inverters are connected to the net, so I got the alarm but at the time I had no generator connected, so it was like slow torture as watched the voltage drop. At the time I only had 3 combined batteries set up in parallel and voltage charge was too soft taking each cell...

I had a similar issue, I purchased a 5amp varible voltage >48V charger from Amazon. You only need to give it a small shot of amps and it wakes up. Then you can continue charging from solar.

Hi Jallum, I have all 4 modules up and running now, that's 28 units in x4 14s configuration. I wasn't pushing them hard at all at first, but after a low voltage trip and a 1,000 Mile trip to reset them, I increased the voltage setting from 56V to 58V (4.14V per cell) max and float at 56V. Now...

Any how, recently I set at these to 50amps charging for each inverter, and increased the bulk voltage to 58V and 56V float. I'm getting so much more out these, I'm still in experiential mode but the previous setting didn't get me much more than 15KW. On what should be a 54KW system, I now belive...

I have mine set up with x2 5KW offgrid Growatt inverters. I initially had them set

I have a similar issue. I have a offgrid house and I've just purchased a new generator, which will push out 12KW. I have two Growatt inverters (5KW each), my problem is I don't want to max out on the generator feeding the house and charging the batteries at the same time. So, I backed down the...

For temperature monitoring I'm thinking of using the Sonoff Temperature sensor (Link below) This allows for wifi monitoring from anywhere, operates on 110V and and can take up to 15amps. I have a similar set up in battery box for my remote gate, and as along as there is 2.4 GHz wifi available it...

Hi Jallum, Yes, I am concerned! The offgrid system is CO, so it gets rather cold in the winter. I have the BMS set for trip at -2DegC and I have placed copious amount of insolation around the battery . For next winter I do need to think how to have this system heated, any thoughts?

Hi Jallum, That looks awesome! I actually started working on these on Friday last week, I set out three days to finish 14; big mistake. I ended up extending my trip and managed to finish 7 modules (14S 48V) and switched on the power to the house for the first time yesterday in over a year. The...

Thank you for the quick reply! When I built the first battery I didn't plan on a second, (same as my kids) so that's why I used two different battery type's; it was just what was available at the time. Each 7S battery is balanced in capacity, it's just the two 7S have different capacities. The...

Hello, I have built two 7S Li-ion batteries consisting of 182 (18650) cells and each with its own Daly BMS installed (24V). The first battery consists of 182 2900mAh cells and the other battery consists of 182 1500mAh cells. My question is, considering each battery is protected by it's own BMS...

Roger that! Thanks for the help, I'm going to start with 2 packs and finish the the other 2 at a later date. 28KW is sufficient, until I get the hot tub....

Sorry, I should have explained! The spreadsheet is only an example, I have no idea of the voltages until I travel. Although, the last time I was there I did manage to check one stock battery and the 14 cells within the battery were within +/-0.2V. They have an installed BMU so it seems to...

Hello again! I double checked, and the stock batteries are configured in series. Stock battery =48V Pack one x7 cells in series 3.7V nominal 3.7*7=25.9V Pack two x7 cells in series 3.7V nominal 3,7*7=25.9V Pack one and two in series =51.8V for each stock battery. My question is, if I have...

Yes Got it! That will work. Thanks, I really appreciate the help.

Sorry it's rather wordy, you have it correct except for a couple of points below. Please see my comments below in red text! Let me take what I've read and feed it back to you to see if I have it. Series means voltages add, chaining (+) to (-). Parallel means + to + and - to - leaving voltage...

Thank you for your help! Do you think the schematic is the correct way? Inside each stock battery I will break the series connection from the x2 24V 7S2P and parallel x2 7 cells to form x2 3.4V 7S 2p. Then series them to give me a 6.8V 14S 2p for each stock battery. Then series x7 of these to...

The system has two Xantrex charge controllers (Xantrex W60) and the inverter is a Xantrex XW 6048 series hybrid inverter/charger

Q-Dog Thanks! it looks as though this is the safest way to go! If I do manage to get a generator, can any one recommend a good charger unit to charge up these bad boys?

Yes thank you! The plan is to take each 48V stock battery containing x2 24V 7S2P wired is series, reconfigure each stock battery to a x2 3.4V 7S 2p wired in parallel. Then series x7 batteries with a 200AMP BMS to give a 48V 14S (14KW) battery. Then parallel the 4 batteries to give a 56KW...

Thanks for the quick reply! I have to try to get power to the house, so abandoning my plans is not really an option. I'm thinking now of attaching each 48V LG chem unconfigured battery to the solar charge controller and charging each battery in turn using the internal BMU to balance the...

Hello, Ive posted before explaining how I want to make a power wall using x28 LG chem 48V in x4 14S parallel configuration (56KW) for my offgrid house, each of the 4 will have a Daly 14S BMS. These are the same LG chem batteries, which battery hook up are selling once again. My new question is...

Hello again and happy New Year to all! I didn't want to start a new thread so Ive added to my previous. I'm also putting together a system for my offgrid driveway gate. The gate is over 800ft from the main house, so running a cable isn't really practical. As well as powering the gate and...

Gents, Thanks for all your comments! Yes, I'm talking about the LG chem packs which David Poz did the strip down. Altogether I have 28 modules and like David suggested in his video, my plan was to position the pouch cells in parallel in each module to give a 2S 7P and then stack x7 modules in...