User Panel
User Panel
User Panel
USA
|
Posted: 1/25/2024 11:40:02 AM EDT
I'm installing a 3200 watt grid tie 48v system with a sol ark hybrid inverter to my home, I've got the contractor picked out, etc. but for battery backup I'm a bit torn between gel or lithium.
Besides discharge and cycle advantages (far more useful I'd think for strictly off grid) is there any advantages that justify the price of lithium for what will be essentially a backup system? |
|
|
KS, USA
|
Posted: 1/25/2024 12:23:13 PM EDT
[#1]
Lifepo4 gives you 100% discharge, so 100ah is 100ah, not 50ah then suffering damage. Also cycles are important. If the gel is good for 500 and the lifepo4 is good for 2000, but the Li is only 3x the cost, then you're ahead with the money up front on replacements. Also factor in replacement logistics. If you're in town with next day amazon, no big deal. If you're off grid on an AK island, ship once cry once.
I'm running Lifepo4 in my setup, which are all experimental, but getting used daily. |
|
|
USA
|
Posted: 1/25/2024 1:39:18 PM EDT
[#2]
Quote HistoryOriginally Posted By phlat: Lifepo4 gives you 100% discharge, so 100ah is 100ah, not 50ah then suffering damage. Also cycles are important. If the gel is good for 500 and the lifepo4 is good for 2000, but the Li is only 3x the cost, then you're ahead with the money up front on replacements. Also factor in replacement logistics. If you're in town with next day amazon, no big deal. If you're off grid on an AK island, ship once cry once. I'm running Lifepo4 in my setup, which are all experimental, but getting used daily. Are you using these off grid? |
|
|
|
Posted: 2/1/2024 10:07:27 AM EDT
[Last Edit: 3n1gm4]
[#3]
My brother has been living off of 3 200ah batteries and a generator for almost 2 years now (power companies are sloooow)
Daily use powered by 6 100w panels, he's had 0 issues with them so far and we're planning on moving them to greenhouse / barn duty after power is setup and running. |
|
|
|
KS, USA
|
Posted: 2/1/2024 10:13:04 AM EDT
[#4]
Quote HistoryOriginally Posted By ihavesuperpowers: Are you using these off grid? |
|
|
USA
|
Posted: 2/13/2024 9:59:50 PM EDT
[#5]
That's a bit of the issue I'm dealing with, constantly drawing and charging from the battery, lithium, no contest. For my uses, occasional power outage from ice storms or bad storms that come thru Oklahoma (I live fairly close to twister alley), I'm not sure if cycle rate or more power storage makes more sense.
|
|
|
|
Posted: 2/13/2024 10:05:08 PM EDT
[#6]
Quote HistoryOriginally Posted By phlat: Lifepo4 gives you 100% discharge, so 100ah is 100ah, not 50ah then suffering damage. Also cycles are important. If the gel is good for 500 and the lifepo4 is good for 2000, but the Li is only 3x the cost, then you're ahead with the money up front on replacements. Also factor in replacement logistics. If you're in town with next day amazon, no big deal. If you're off grid on an AK island, ship once cry once. I'm running Lifepo4 in my setup, which are all experimental, but getting used daily. |
|
|
|
USA
|
Posted: 2/14/2024 1:45:25 PM EDT
[#7]
Anybody recommend a batttery supplier?
|
|
|
|
Posted: 2/14/2024 1:55:41 PM EDT
[#8]
I bought mine from Signature Solar
|
|
|
|
NM, USA
|
Posted: 2/14/2024 4:43:16 PM EDT
[#9]
|
|
|
MP, USA
|
Posted: 2/15/2024 3:57:59 PM EDT
[#10]
Relion powers my boat.
3100W, Victron Multiplus2, 8 victron battery controllers, 5x 300 AH Relion LIPO. |
|
|
|
Posted: 2/21/2024 7:25:45 PM EDT
[#11]
|
|
|
|
|
Posted: 2/27/2024 9:13:17 PM EDT
[Last Edit: Slickbaby]
[#12]
|
|
|
|
|
Posted: 2/27/2024 9:32:13 PM EDT
[#13]
Quote HistoryI'm probably going to pick up a couple of those soon.
|
|
|
|
|
Posted: 3/2/2024 2:41:14 PM EDT
[#14]
Quote HistoryOriginally Posted By jaqufrost: I'm probably going to pick up a couple of those soon. Quote HistoryOriginally Posted By jaqufrost: |
|
|
|
USA
|
Posted: 3/3/2024 12:30:26 AM EDT
[#15]
Quote HistoryOriginally Posted By jaqufrost: I'm probably going to pick up a couple of those soon. I've looked into these and my thoughts are, if it goes it goes. I believe I'd rather have multiple batteries, knowing I could loose several and still be operating. Could be something I'm missing though. |
|
|
|
Posted: 3/3/2024 1:49:26 AM EDT
[Last Edit: Jodan1776]
[#16]
I've lived 35 years off-grid on a completely self-designed and self-installed system, so I do know a thing or two about all of it.
Your best bang for the buck is Trojan T-105 6v golf cart batteries. They, like all batteries, have gone up a lot in price over the last few years, but they are still the best value over time. They weigh 62 pounds, so they are manageable, as compared to larger batteries. I've never used AGM batteries, but they cost nearly double the T-105s. My knowledge on this is current, as in a couple days I am picking up a new set of batteries. The best price I found in NH is $175 each. They typically last 7-10 years if well taken care of. Lithium batteries are incredibly expensive, and they are a huge fire hazard. If they catch fire, your house, and everything in it, is history. Nobody's putting that fire out. If lithium, better store them in their own building (preferably a solid concrete, fireproof one) away from your house.  |
|
|
|
USA
|
Posted: 3/10/2024 2:18:01 PM EDT
[#17]
Quck question for you pro's. I have an interlock kit installed, switch over on the breaker box. I'm not concerned to selling back to the grid, they don't pay much anyway. Should I just do a offgrid setup, connecting to the interlock side?
|
|
|
USA
|
Posted: 3/10/2024 2:33:43 PM EDT
[#18]
Quote HistoryOriginally Posted By Jodan1776: I've lived 35 years off-grid on a completely self-designed and self-installed system, so I do know a thing or two about all of it. Your best bang for the buck is Trojan T-105 6v golf cart batteries. They, like all batteries, have gone up a lot in price over the last few years, but they are still the best value over time. They weigh 62 pounds, so they are manageable, as compared to larger batteries. I've never used AGM batteries, but they cost nearly double the T-105s. My knowledge on this is current, as in a couple days I am picking up a new set of batteries. The best price I found in NH is $175 each. They typically last 7-10 years if well taken care of. Lithium batteries are incredibly expensive, and they are a huge fire hazard. If they catch fire, your house, and everything in it, is history. Nobody's putting that fire out. If lithium, better store them in their own building (preferably a solid concrete, fireproof one) away from your house. https://i.imgur.com/yJ9Rzeb.jpg How many cycles/depletion % are you getting off those during that time span? |
|
|
USA
|
Posted: 3/10/2024 2:52:52 PM EDT
[#19]
I would head straight to the Current Connected website and get the SOK 48 volt server rack batteries. I’m full time in a 5th camper with 2 x 206ah SOK batteries.
|
|
|
|
Posted: 3/15/2024 6:42:58 AM EDT
[#20]
Unfortunately yes. Even not cycling, they'll last 2-4 years longer. Justifying the cost is a different story.
|
|
|
|
OH, USA
|
Posted: 3/15/2024 6:53:10 AM EDT
[#21]
Quote HistoryOriginally Posted By ihavesuperpowers: Quck question for you pro's. I have an interlock kit installed, switch over on the breaker box. I'm not concerned to selling back to the grid, they don't pay much anyway. Should I just do a offgrid setup, connecting to the interlock side? I know at one point they were requiring specialized inverters if you were going to connect to the grid and have the option to isolate off-grid. Most people who install solar panels are not aware that if there is no grid power, there is still no home power regardless of your panel output. |
|
|
USA
|
Posted: 3/15/2024 8:02:43 PM EDT
[#22]
Quote HistoryOriginally Posted By NoHarmNoFAL: If you are interconnecting to PSO, you better make sure that there are approved cutoff switches to pull from the batteries and not from the grid. I know at one point they were requiring specialized inverters if you were going to connect to the grid and have the option to isolate off-grid. Most people who install solar panels are not aware that if there is no grid power, there is still no home power regardless of your panel output. Going off grid, talked to a local installer/electrician and the process to get grid tied approval can be a huge pain in the ass. Ordered panels, 20x305 watt half cell. Deciding between battery and inverter now. |
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
Attached File
