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18Kwh - 12v off grid Powerwall
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Hi all, 

Finally starting my journey into a DIY powerwall. This will be intended for off grid solar with fairly small loads from two 700w inverters. Panels are 14 x 190w 

This is a low cost build intended for maybe 5kwh per day use , giving a few days power on dark rainy days. I'm not going 48v or even 24v as I already have two high quality synergex inverters. All lights and pumps are 12v etc. so really no need to spend up as their are no huge loads.

Regulators are 30a MPPT epsolar units that I can program the output voltages to fit lithium ranges. I'll be running four of them, I have two already and know they work together well. 

Basically a standard high efficiency  fridge , lights and a 42" LCD TV, pump etc is all I'll be running.

It will be a 3s x 720p so all up 18 x 120cell packs. Housed in a half height server rack.  

I will be monitoring the pack voltages using a sitmon PacketFlux unit, which I can graph and calculate usages , state of charge etc, also each pack voltage, with App/Sms alerting through PRTG. I can also control relays based on heat and voltage etc. great product that I've used before. Cheap too. 

Finally tested cells all loaded into my first pack tonight. Waiting on my glass fuses to arrive and will hunt down some bus wire :Smile   Now the real labor begins :Sad hey it's a hobbby right ? 
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Messages In This Thread
18Kwh - 12v off grid Powerwall - by jestronix - 11-27-2017, 12:59 PM
RE: 18Kwh - 12v off grid Powerwall - by Korishan - 11-27-2017, 01:05 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 11-27-2017, 01:12 PM
RE: 18Kwh - 12v off grid Powerwall - by daromer - 11-27-2017, 02:07 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-01-2017, 03:25 AM
RE: 18Kwh - 12v off grid Powerwall - by Learjet - 12-01-2017, 12:00 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-01-2017, 12:45 PM
RE: 18Kwh - 12v off grid Powerwall - by daromer - 12-01-2017, 12:23 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-03-2017, 01:18 PM
RE: 18Kwh - 12v off grid Powerwall - by Korishan - 12-03-2017, 02:05 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-04-2017, 12:15 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-05-2017, 05:21 AM
RE: 18Kwh - 12v off grid Powerwall - by not2bme - 12-04-2017, 10:16 PM
RE: 18Kwh - 12v off grid Powerwall - by Wattsup - 12-07-2017, 10:28 AM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-07-2017, 10:49 AM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-20-2017, 01:41 PM
RE: 18Kwh - 12v off grid Powerwall - by Korishan - 12-20-2017, 01:53 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-21-2017, 10:33 AM
RE: 18Kwh - 12v off grid Powerwall - by Wattsup - 12-21-2017, 11:05 AM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 12-22-2017, 12:09 PM
RE: 18Kwh - 12v off grid Powerwall - by jestronix - 06-20-2018, 02:10 PM
RE: 18Kwh - 12v off grid Powerwall - by emmsee - 07-01-2018, 02:29 AM

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