Re: lithium batteries- drop in Reply #40 – February 02, 2019, 06:11:32 pm Paid under $5k for the batteries. Find a cheaper solution within the Lifepo4 Chem for the amount of AH and I would like to see it.. With BMS.. I am all ears? Quote Selected
Re: lithium batteries- drop in Reply #41 – February 02, 2019, 09:16:31 pm The best explanation of cycle life.lithium & solar power LiFePO4, FAQ: What is the real cycle life for lithium... The above link is to clear up the 1,500 - 2,000 cycle comments.Way to go DavidS, I believe you will have these for a long time as you have installed a more than just adequate system. At an estimate of 1500, 2000, 3000, or maybe 5000 you might be at 80% of your original ahs, incredible, well worth your investment. I too am looking at doing something similar, so I will look forward to all your posts and comments and also others that have installed lifepo4 systems in their rv. Quote Selected
Re: lithium batteries- drop in Reply #42 – February 03, 2019, 10:46:13 am After install... Batteries were at 12.9v .. I waited around a couple minutes for everything to reboot and start up.. Charger kicked in and went to 13.1v ....Went to breakfast as my son was hungry which is a rarity.. On checking the Victron app. Batteries went into bulk mode right away. Never seen it with the last set of lithium.. it was like it was wrestling them to get charged past the 12.8v nominal.. They were used and I have no starting reference with them but I think they were bad.. excited with these for sure.. Charge is set to bulk at 14.4v and float at 13.8vWill add pics in a min. Son moved my cord.Tight squeeze I must say.. 12ea pieces 33" wide 12" tall and 16" deep with the tray Quote Selected
Re: lithium batteries- drop in Reply #43 – February 03, 2019, 11:15:44 am Looks terrific. Nice installation. Hopefully, we have a few years left on our AGMs but a price drop will make this hard to beat. Had been looking at fork lift batteries with their 1/4" plates but bet yours is a lot lighter.Pierce Quote Selected
Re: lithium batteries- drop in Reply #44 – February 03, 2019, 11:24:42 am Quote from: Pierce & Gaylie Stewart – February 03, 2019, 11:15:44 amLooks terrific. Nice installation. Hopefully, we have a few years left on our AGMs but a price drop will make this hard to beat. Had been looking at fork lift batteries with their 1/4" plates but bet yours is a lot lighter.PierceApprox 375lb of batteries and probably another 50lb or so for the tray and clamped side pieces so a little over 440lb approx...1200ah total..Also I spent $4600.00 for these batteries..try and purchase 2000ah of agm and see what the total would be.. then the longevity of the lithium I think its a no brainer.. For me anyways Quote Selected
Re: lithium batteries- drop in Reply #45 – February 03, 2019, 11:57:55 am That's a lot lighter than fork lift batteries and 1200ah is huge. It is a no brainer if paying anywhere close to list. I was lucky as I picked up ours from a bankrupt company for almost nothing. How is lithium if you have a power failure in a storage facility and parasitic load flattens them?Pierce Quote Selected
Re: lithium batteries- drop in Reply #46 – February 03, 2019, 12:12:03 pm Quote from: Pierce & Gaylie Stewart – February 03, 2019, 11:57:55 amThat's a lot lighter than fork lift batteries and 1200ah is huge. It is a no brainer if paying anywhere close to list. I was lucky as I picked up ours from a bankrupt company for almost nothing. How is lithium if you have a power failure in a storage facility and parasitic load flattens them?PierceBMS protected.. it will shut itself off if voltage gets to low or charging gets to high. Full protections. Quote Selected
Re: lithium batteries- drop in Reply #47 – February 05, 2019, 06:35:52 pm I was not trying to rain on your parade. You have embarked on an exciting home-brew lithium learning experience.A couple of notes:1. How would you like to earn back 30% on all your costs? Just put even one new solar panel on your rig and you can claim the batteries, wiring and BMS on your federal taxes.2. I like your simple clamping mechanism. This will keep the cells from bulging.3. It's good that you got new matched batteries. I bought my LiFePo4s at a discount, but they were not very well matched, which resulted on several cells being damaged. A relay driven by the BMS shorted and overcharged the battery bank. Long story.4. Are all your cells monitored by the BMS? If not, they should be. I installed the Orion BMS Jr, which cuts off charging when even one cell reaches >3.6 volts or < 2.5 volts. It can monitor up to 16 cells.5. I would recommend folks buy a full 48 volt used Nissan Leaf pack. See: RV House Battery Part 2: Reconfigure the Nissan Leaf Modules to 48 Volts -...These packs have at least 18KWH left in them for about $3,200 per my above eBay link. However, since thay are used, you cannot claim the 30% tax credit if you are installing solar panels. I recommend 18KWH as a minimum because my 9KWH LiFePo4 pack quickly gets run down if I leave the inverter on while boondocking on a cloudy day. Quote Selected
Re: lithium batteries- drop in Reply #48 – February 05, 2019, 06:39:09 pm No Rain here.. I have used the Tax credit on the solarAll BMS protected .. So far so good.. Quote Selected
Re: lithium batteries- drop in Reply #49 – February 05, 2019, 06:48:36 pm Supercaps, are THE up and Coming Tech, I have been following! This was 2 years ago, but once they get rolling, I might do this in maybe ALL my power needs, Home, and Motorhome! An Electric Foretravel, anyone? https://www.youtube.com/watch?v=3K8JIC-ov_YBTW, I knew that Elon Musk was Primarily interested in this Tech, in his Grad Studies. He may apply his "Power Wall" in a Supercap Flavor some day.....we can only hope? Quote Selected
Re: lithium batteries- drop in Reply #50 – February 05, 2019, 07:38:32 pm Quote from: RetiredGuns – February 05, 2019, 06:48:36 pmSupercaps, are THE up and Coming Tech, I have been following! This was 2 years ago, but once they get rolling, I might do this in maybe ALL my power needs, Home, and Motorhome! An Electric Foretravel, anyone? https://www.youtube.com/watch?v=3K8JIC-ov_YBTW, I knew that Elon Musk was Primarily interested in this Tech, in his Grad Studies. He may apply his "Power Wall" in a Supercap Flavor some day.....we can only hope?It might take another 100yrs for the price to come down.. So it is affordable. Quote Selected
Re: lithium batteries- drop in Reply #51 – February 05, 2019, 08:23:15 pm Quote from: RetiredGuns – February 05, 2019, 06:48:36 pmSupercaps, are THE up and Coming Tech, I have been following! This was 2 years ago, but once they get rolling, I might do this in maybe ALL my power needs, Home, and Motorhome! An Electric Foretravel, anyone? https://www.youtube.com/watch?v=3K8JIC-ov_YBTW, I knew that Elon Musk was Primarily interested in this Tech, in his Grad Studies. He may apply his "Power Wall" in a Supercap Flavor some day.....we can only hope?I want one! That video was in '16, so I wonder where they are at now with this new technology? What a boon for those of us who love to boondock! Quote Selected
Re: lithium batteries- drop in Reply #52 – February 05, 2019, 09:08:14 pm Supercaps have a low amount of Watt-Hours. E.g. Ten watt hours. BUT, they pack a wallop in instant power. E.g. 2000Amps.I did not buy one because of the price, but I may eventually buy one to start the engine faster in cold weather. Quote Selected
Re: lithium batteries- drop in Reply #53 – February 05, 2019, 10:19:35 pm Quote from: Tim – February 05, 2019, 09:08:14 pmSupercaps have a low amount of Watt-Hours. E.g. Ten watt hours. BUT, they pack a wallop in instant power. E.g. 2000Amps.I did not buy one because of the price, but I may eventually buy one to start the engine faster in cold weather.Listening to him though, they feel they will replace batteries? Possible, it's a Let's wait and see, I guess? They have that so called "Proprietary" method to Slowly release those Amps, he "Says"? Quote Selected
Re: lithium batteries- drop in Reply #54 – February 05, 2019, 10:32:34 pm Elon has built a fantastic vision, and a incredible house of cards, don't think it will last much longer. Quote Selected
Re: lithium batteries- drop in Reply #55 – February 19, 2019, 08:52:41 pm Quote from: Old phart phred – February 05, 2019, 10:32:34 pmElon has built a fantastic vision, and a incredible house of cards, don't think it will last much longer.OK, that being said, he just seems to reinvent himself, over and over! Admirable in any measure, check out what I just found, on the Super-Caps, and Possible Acquisition of Maxwell Technologies! This might be a real Game Changer....can you say, chuck the Diesel Tank, On- Board Generator, and Diesel Engine, and have it all? Maybe Keep a Small Diesel Tank, and Larger KWH Genny, for an even longer range? Check this out! Interesting if true!!! https://www.youtube.com/watch?v=H8wdeqS3UlU Quote Selected
Re: lithium batteries- drop in Reply #56 – February 19, 2019, 08:55:46 pm If it happens, and is what they claim it is, it would be THE Stock to buy, ASAP! Wow! Quote Selected
Re: lithium batteries- drop in Reply #57 – February 19, 2019, 09:39:39 pm And, for a Real-True, Pie-in-the-Sky, a Tesla TOAD, that not only has Regen Braking, But Regen Mode while being Towed 4 Down! Hmmmmm All good, huh? 4000+ Watts on the Roof, And Imbedded in the 'Glass Gel, on Both sides of the Coach, in full sun would give Great Boondocking capability, as well! Hey, one can dream....Tesla sure can, and does bring Excitement, to our Technological world, without a doubt! Quote Selected
Re: lithium batteries- drop in Reply #58 – February 19, 2019, 11:19:58 pm Odd, but I tend to dream at night. Quote Selected
Re: lithium batteries- drop in Reply #59 – February 20, 2019, 06:52:15 am I recommend 20KWH of batteries for our rigs. I did the math.This is about the power of a Nissan Leaf G1 battery pack. Quote Selected
Topic: lithium batteries- drop in