SOK Lithium Batteries - OutBack Power Technologies User ...

Post by jcheil » Mon Jun 27, 8:42 pm

Link to Energyland

Overall it was a very simple install. I got 2 racks with them so it ended up being a very clean install taking up a LOT less floor space than the 24 L16's that they replaced. Even though they weigh a bit less (100lbs) than the L16's (120lbs), they were a bit harder to install myself since I was putting them into a rack and had to lift them a lot higher than just dragging an L16 across the floor. So I would ask a friend to help with your install.


And for the first time in 10+ years the FNDC and "Charge parameters met" finally works the way it was supposed to without a huge jump to 100 when you get those unique shady conditions mid/late-day. Mostly because the Lithium's are very efficient when charging and when they are done charging the BMS simply stops accepting ANY current so that now that easily triggers the "charge parameters met" parameters in the FNDC because it now no longer sees ANY current going to the batteries and the voltage remaining constant. I am fully charged easily at least 30% faster each day than I was with the L16's. So pretty slick.

I spoke to an engineer at CurrentConnected for quite a while because I wanted to make sure they were going to meet my needs. Their people were absolutely excellent. Knowledgeable and very happy to discuss the detailed technical aspects of the design. Was only on hold for less than a minute the one time I was placed on hold. And they speak English and are in the USA! (despite them being assembled in China).

They also have RS485/232/Canbus communications so with a PC adapter you can use their free software to monitor everything down to the individual cell voltages, statuses, charge cycles, charging states, faults, state of charge and more. I went one step further and if you purchase a basic RaspberyPI and a one-time purchase ($60) of software from

Here is a cool video where they disassemble one and show how easy it is to be user serviceable. This was important to me because although there is a 10 year warranty and 20 year design lifecycle ( cycles tested and still at 80% capacity), I wanted to make sure that if the company ever went tits up I would still be able to get repair parts for it. They use standard cells that are easy to obtain and very easy to replace with just a screwdriver.
https://www.youtube.com/watch?v=QrPED4uPsFw&t=398s

Your mileage may vary but I definitely recommend them so far.
Jay

Just an FYI for those following this thread. I ordered 8 of the units ( https://www.currentconnected.com/product/sk48v100/ ) and got them installed about a week ago. Took about 10 days for delivery to Florida from Nevada (freight). $15,050 total. I had ah before since you never wanna let them get below 50 that means I really only had 550ah "usable". Also, I used to only get down to the low to mid 60% range at the worst on occasion and mid to upper 70's most of the time. So since these lithium's can go down to 5% without any significant degradation in life I didn't need as much overall capacity. I could have gotten by with only 5 of the new ones but decided to buy a bit of extra reserve for those rainy days (literally) and keeping the DOD above 20% was the test level they used when they tested cycles in their lab testing and the cells still remained at 80% of original capacity.Overall it was a very simple install. I got 2 racks with them so it ended up being a very clean install taking up a LOT less floor space than the 24 L16's that they replaced. Even though they weigh a bit less (100lbs) than the L16's (120lbs), they were a bit harder to install myself since I was putting them into a rack and had to lift them a lot higher than just dragging an L16 across the floor. So I would ask a friend to help with your install.Everything so far is running great. The BMS in the units does everything. Just set your absorb and float voltages, absorb time to 15 mins and charge efficiency to 97%. No more EQ's or water or fumes. Also my power room is SO MUCH COOLER than it used to be. The ac in there is using 1/3 of the power it did before and always stays below 80 degrees now even in the hottest part of the day here in central Florida. The old lead acids used to put out a lot of heat when charging (compared to these).And for the first time in 10+ years the FNDC and "Charge parameters met" finally works the way it was supposed to without a huge jump to 100 when you get those unique shady conditions mid/late-day. Mostly because the Lithium's are very efficient when charging and when they are done charging the BMS simply stops accepting ANY current so that now that easily triggers the "charge parameters met" parameters in the FNDC because it now no longer sees ANY current going to the batteries and the voltage remaining constant. I am fully charged easily at least 30% faster each day than I was with the L16's. So pretty slick.I spoke to an engineer at CurrentConnected for quite a while because I wanted to make sure they were going to meet my needs. Their people were absolutely excellent. Knowledgeable and very happy to discuss the detailed technical aspects of the design. Was only on hold for less than a minute the one time I was placed on hold. And they speak English and are in the USA! (despite them being assembled in China).They also have RS485/232/Canbus communications so with a PC adapter you can use their free software to monitor everything down to the individual cell voltages, statuses, charge cycles, charging states, faults, state of charge and more. I went one step further and if you purchase a basic RaspberyPI and a one-time purchase ($60) of software from https://solar-assistant.io/ you will have online access to all of those battery parameters on your PC or mobile devices 24/7. I just bought a cheap tablet and now it sits on the wall next to my mate3 to show all of those details.Here is a cool video where they disassemble one and show how easy it is to be user serviceable. This was important to me because although there is a 10 year warranty and 20 year design lifecycle ( cycles tested and still at 80% capacity), I wanted to make sure that if the company ever went tits up I would still be able to get repair parts for it. They use standard cells that are easy to obtain and very easy to replace with just a screwdriver.Your mileage may vary but I definitely recommend them so far.Jay

Are you interested in learning more about Rack Lithium Battery? Contact us today to secure an expert consultation!

Originally Posted by Mr. Goodwrench

Originally Posted by

Because my 2 three year old LA 12volt batteries are both getting tired (both currently dead), I am considering replacing them with one 12volt 100AH LiFePO4 battery. My question is will it have enough power to operate the 2 rack and pinion slides on my 295rl 5th wheel if I am not connected to shore power? I don't have solar and don't plan to as we almost always stay at full hook up sites. However, it would be nice to open a slide if we were at a rest area or in our storage area. I will check my existing converter to see if it has Li charging capability and am not against replacing it if necessary. Thanks for reading and I look forward to replies.