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Does yours go to float before it ever get a chance to bulk charge? I finally set my 2424 to Solar, Utility, battery for the dark winter days. It at least supplies some of my daytime loads with solar when sunny out.

My split phase lv2424 does is setup with a critical loads switch for fridge, furnace, basic household lighting, and does knock down energy consumption during full sun days if I’m around to flip switches. I halve about 3k of solar. The lv2424 does not do a good job of bulk charging my 800ah of...

It took a bit to get the serial connection going with one of my laptops. It looks like my 2 server rack units are pretty close. I guess I didn't realize that the EG4's nominal voltage of 25.6 volts was actually only 20% SOC and going below that would set off the Alarm LED.

Thanks for the chart. It explains a lot. The EG4 specs say to Bulk at 28.5 and float at 28.25 and I have set that as close as the PIP's can in the user settings. I set the "switch to utility" to 25.5v which is close to 20% SOC. I was assuming that 25.6v nominal was 100% SOC. DC cutoff is set to...

Hi, I have two 24v EG4's setup in parallel to my split phase setup with 2 MPP Solar LV2424's. I am trying to set some conservative settings to retain some storage for an actual power outage. The battery nominal voltage is listed as 25.6 volts. I have them setup to stop discharging at 24 volts...

I never heard back by email. I have a split phase setup with two MPP Solar LV2424's and was able to get my system to start up with my old lead acid bank, temporarily for a few seconds, parallel the new batteries (2 24v EG4's), then switch out the old bank with a DC switch. I've been running for...

The system is still up and running after booting with lead acid 24v bank. I hope there will be a better fix down the road.

Did you pull a alarm code from the unit? I think my initial problem might have been I had the inverter part of the LV2424 turned off and it shut down when I had no more PV. I'm thinking the BMS didn't know what happened and threw a short circuit error. I got through day 1 with the two batteries...

Emailed tech support. I got a response, but basically nothing was resolved. I sent a couple more emails after I received my 2nd unit, and it did the same thing. It looks like a pre-charge issue with my MPP Solar LV2424 inverters. Starting my split phase system on the old lead acid bank in...

I was able to get around this with the two 24v EG4s. It looks very much like the pre-load resister is the culprit. I hope @Signature Solar is able to come up with a better solution.

It got too dark before I had a chance to wire in another switch, so I did parallel the the lead acid bank with the EG4 bank for about 30 seconds and then switched off the old batteries and the system is up and running again with both of my 24v EG4s. The BMS software shows one of the 2 EG4's...

Finished the thread. It looks like I should be able to get the system booted in the daytime with solar and the inverter part of the pip on, and with the AC in connected. Paralleling the batteries shouldn't be a problem in the short term, but as long as I have light, I should be able to switch...

I see, my pip is an all in one, so no external controller. I am currently reading through the other thread...

I don't have any idea. Sorry, what's the scc?

I'll follow up with them. I didn't pull a code from the BMS at the time. I'm hoping for an easy fix. My eight T105 lead acid bank is at the end of it's life.

Can you elaborate? I was going to get a second DC switch to start my system on the lead acid bank in paralleled with and turn on the EG4's, the switch off the lead acid to see if the new bank will bypass pre-charge problem.

My system went down day before yesterday. I did manage to pull a message of short circuit protection. Also both charging and discharging MOS switch off. I received a second battery and have the same issue, so I'm guessing it's an inverter issue that the BMS doesn't like. I was able to soft start...

Update: I decided to log into the BMS from a laptop to check the status of the battery. Everything looked normal. I breakered it off, disconnected the lead acid bank, reconnected the EG4, turned it on, and it started charging normally. I was pulling from the grid and maybe a amp of solar (30...

I'll give that a try.

Maybe? I wouldn't think so since I immediately disconnected the lead acid bank and then quickly hooked up the EG4. Should I try at add the battery in parallel with the flooded set temporarily to test?

I'm wondering if the BMS is bad? I don't have any 24v loads I can try right at the moment though...

Just checked and the voltage measures about 1.5v when I breaker on direct from the battery. When I turn on the battery, then the in-line switch, the battery indicator shows "alarm" then passes 0 volts. The display stays off during the rapid tick noise. I am in user mode and have float and bulk...

Hi, I received one of two of the long back ordered Signature Solar EG4 24v batteries. When I replaced the lead acid batteries with the new battery to my MPP LV2424, it starts to fire up, then shuts down right away. I hear a little tick, tick, tick noise until I breaker off the battery. The...

I have a 2k grid tie system up and running, and a 1k off grid with battery backup for emergency use at the moment. The 1k off grid is a PIP LV2424. I have 24v of flooded lead acid at the moment, but no way to equalize them. I guess I either need to do this with a AC charger, or maybe put my PV...

If you took all your array and paralleled it to two Sun G2 inverters, you'd loose MPPT tracking from what I understand. But on an array that is pretty much in full sun for the peak hours, would it be beneficial to have excess DC going to the the leg that is drawing more at any given point vs...

Thanks Svetz, I just wanted to make sure I had the basic theory down. Thanks for the information.

I'm struggling with understanding the capacity of my battery bank. I have 8 Trojan T105 6v wired series/parallel to 24 volts. They are rated at 225 amp hours at 6 volts. So double that in my system to 450 amp hours. To get watt hours, I take 450x24=10800 right? Divide that by 50% to get...

My ground mount I built last week. I need to replace the ratchet straps with a turnbuckle to strengthen the back support, and am going to work on a tilt adjust for the seasons.

When I realized that 21v was super bad, I bumped that to 23.7, but that only is realistically a few hours with a load of 700 watts. I am thinking about getting a transfer switch so I can at least get more watts from the panels without running extension cords everywhere, and top the batteries off...

Thank you for digging this up. I'm frustrated with myself trying to understand all there is to know about batteries. I think what I've learned is that I have more panels (1600w) then I can use most days unless I load the inverter, while I don't have enough battery (450Ah) to get nowhere through...

Probably not. It's just the manufactures recommendation it be done monthly. 8 Trojan T105's for 24 volts...

Possibly. I'm trying to figure out what, if anything I should do next with this system, or if I should eventually scrap and go with grid tie inverters with limiters for each leg. My goal is to have batteries for backup, but have been toying with letting them be drawn off of during good sunny...

Thanks. The hybrid manual didn't have the specifications page like this link.

I'm not seeing a thread on this, but need to equalize my lead acid 24v bank monthly. Will the DC connection on the PIP be able to handle 32.4 volts from shore power, or a better MPPT charge controller, or should I take it off line?