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@mountaingrownnomad4212 2 күн бұрын
Is it fair to assume that likewise the input/charge wires (Solar charger) should also be connected similarly?
@ForgeAheadwithMike 8 күн бұрын
How do we calculate the wire size for interconnects?
@MichaelMascari-jh9yr 9 күн бұрын
You are confusing people with this video
@michaelsharman7176 10 күн бұрын
Could you use mentholated spirits to clean the battery connections and bus bars etc
@Tkdmaster1991 11 күн бұрын
So would it be fair to assume that for a 2 battery setup, probly best to go with a piggy back setup with positive and negative going off different batteries?
@HowtoBuildaCampground 19 күн бұрын
Hey Guys, I have staff that won't iphone out an iphone app to check the charge. That is not going to happen. They need something on the dash like a zenogy battery monitor. Have you wired one of those up?
@sfkenergy 18 күн бұрын
It will not be possible to show speed and information on multiple batteries on a device like the zenogy. Its fine for a single one. We have customers that have used both, the app is approach is better, it can be updated, its clean and wireless. Search for Iphone or Ipad holder for Golf Cart to get some ideas. We will post an updated video soon showing this with our new SFK hub.
@rjw8316 20 күн бұрын
Nice video, well done. However I have a question, in the busbar configuration could I further reduce the current differences by adjusting the cable lengths for two of the batteries, say battery 1 and 2, to take into account the current path length through the busbar?
@EpiclyReckless 21 күн бұрын
Thanks for this. What if you added a couple inches to the battery 1 cables? Would that even it out even more?
@tomp1193 24 күн бұрын
Could you have the cable for the inverter in the middle of the three cables on the busbar coming from the batteries? In other words could you connect the inverter to the middle lug on the busbar? Pause at 10:50 on the video
@sfkenergy 24 күн бұрын
Yes that would make it a bit better but I think as long as the amp difference is under 10 amps it should balance out easily when you fully charge. The main goal is to avoid the large amp differences of 30+ and as long as you do this you should be good to go.
@tomp1193 24 күн бұрын
@@sfkenergy Its just something i noticed in the video. I seen other videos where there was more than four batteries and the cables from the batteries were taken from the middle of the bank to the inverter. Unfortunately comments were disabled in the videos I saw. I wonder why?
@jorgem50 Ай бұрын
Can these be used as a second battery for a car?
@allensaelee6707 Ай бұрын
Ok so will AGM lead be okay like the first set up? For two batteries? My boat has 2 battery system. Factory wired it parallel but battery (1 ) & (2) are 5 ft away from each other. The load is plugged into battery 1 like your first set up. Battery (2) is 5 ft away located in the back of the boat with just the Pos & Neg cable ran to it from battery 1 😅. Neg to neg pos to pos. Long cable. Should i just add a bus bar to it at this point so it pulls from each end? Draining & charging it equally as 1?
@sfkenergy Ай бұрын
AGM will charge each other much better in parallel because they have a more sloped charge curve. But if possible use option 2. 1 should only be used if you are drawing low amps (under 10).
@LipsMalloy Ай бұрын
Saw Jasonoid's review and I love and want this lid! Is it possible to get with the 275SE? That model is better for me as it is a bit lighter weight. My use would be home backup to recharge my power stations.
@sfkenergy Ай бұрын
When placing the order, please put in the comments you want the clear lid with leds we will add it at no charge. Please note there are somethings you need to consider, anyone can download the app and start messing with your led lid 🙃so you may need to take the lid off and disconnect it. We will revisit this in the future with the RGB controller in v4 of our BMS.
@LipsMalloy Ай бұрын
@@sfkenergy Fantastic! I've never been so excited about a 12V battery since the Dr. Prepare with power module. 😘
@JMX246 Ай бұрын
Great vid - thanks for posting - what Screen / Case did you use for VenusOS on the RPI ?
@scottsheen6224 Ай бұрын
What size are you cables?
@Snailmailtrucker Ай бұрын
Great info ! Much appreciated ! Liked/Subscribed ! *FJB !*
@websterbrauzer8373 Ай бұрын
I love your video, this is extremely helpful for me as I’m setting up a 8S4P right now. The question is instead of a bus bar if you want them equally distant why don’t you just have one post where they’re all connected together? A single post and stack up all the connections that way they’re all equidistant?
@alfredoyeroporro2055 Ай бұрын
The ground should be at the other end
@colinfitzgerald4332 Ай бұрын
Why are there so many low grade ( failures) generated in mass production of LFP batteries? Precision manufacturing shouldn’t result in such high losses. This is very concerning.
@sfkenergy Ай бұрын
Hi, we are in period of rapid growth in the battery industry, so companies are still perfecting manufacturing techniques. This should approve in the future but for now instead of recycling failed cells (which almost all manufacturers say they do) they are instead auctioning off failed cells which are bought by wholesalers and then sold on sites like alibaba where unsuspecting buyers get them thinking they have gotten a deal.
@colinfitzgerald4332 Ай бұрын
@@sfkenergy thanks for the explanation.
@ParagonDIY Ай бұрын
They look ok, I will gladly accept them for testing and review on the channel,. Best regards, ParagonDIY
@triptonmiller8532 Ай бұрын
Most people don't have a Hydraulic crimper. Many of us are not great with electricity projects. This would have been a much better video if you did it manually. This video is useless.
@christianbmerges Ай бұрын
Does someone know how to weld the thread diy?
@Sam-yv8ze 2 ай бұрын
Dont buy nothing from china! Lets ban china! They steal and cheat! Alm china products are very bad and fake! Youre paying too much for garbage! Buy usa or eu products!
@Richi42 2 ай бұрын
I prefer eve terminal with flexible bus bar. And using simple screw.
@defsounds1097 2 ай бұрын
That first battery taking the load more than the others . I hook up the power to one of my battery's and the ground on the other to keep the current and load the same . I do the same with Power Inverter too
@abtechgroup 2 ай бұрын
The one flaw in your setup is you should have fusing to each battery either at the battery or the busbar connection. Fuse rating at 150% of anticipated load. This prevents failure due to one of the batteries internally shorting and the other batteries delivering 10XC (C = battery capacity) current!! In your setup 60 to 80 amp fuses would be suggested.....
@sfkenergy 2 ай бұрын
Thanks for your reply, this was meant to be a demonstration real world installs will use breakers and or fuses as needed. SFK batteries have internal shunts and can monitor amps which means they can be set to disable output at a definable output by the user in the app as well.
@abtechgroup 2 ай бұрын
Oh thats a cool feature! I am considering replacing my lead acids in a sailboat and lithium certainly seems the way to go.
@scrypturefx3077 Ай бұрын
Which pole of the battery ought to be fused
@3DLasers 2 ай бұрын
A custom made circular bus bar ? A big flat washer with battery lug holes on the outside and a big hole in the middle for the input/output ? But with just a standard bus bar mount the two anode/cathode wires of the four on top of each other with the charger/load wires in the middle ?...🌩 ⚡️
@grogxp4459 2 ай бұрын
stupid way of talking
@raymassey8178 2 ай бұрын
The Ranger can pull up to 400amps under a load. pulling or going uphill. The BMS will shut the cart down.
@sfkenergy 2 ай бұрын
This is not accurate there is a governor on the unit that limits maximum power to 8 kW (about 10.5 horsepower). Lead acid have a massive voltage drop under load so in order to provide the same watts they must provide substantially amps. Remember watts = volts × amps. You can either raise the amps or the volts to achieve the same power. Lithium batteries are able to hold the 13v output even at 200 amps (even though we did not see any spikes over 150 amps).
@inv1s_- 2 ай бұрын
I'm completely stumped as to why no one is commenting on wire Guage. I'm seeing all kinds of wire used across the internet and no one seems to care but people say it's important... but leave it out of every tutorial. I have 3 12v 200ah batteries to be run in parallel. I was just going run a bolt and nut through the 3 red to the red trunk, and the 3 black to the black trunk. Wouldn't this be better than a bar? I'm stuck on wire size... I'm also stuck on, do i need a fuse and what size to my 3000w inverter. I have a bunch of 8awg and some 4/0. Was going to 8awg the bank and 4/0 the trunk, with a 100a fuse, although i might up it to 200a. Thoughts? In case anyone cares: 2 x 60v 7ish amp solar panels, 300w? To controller run in parallel. So 60v 15a for 600 watts. To meet 100/50 mppt. 3 x 12v 200ah sla bats run in parallel(haven't done this yet, but planning to) on 8 awg wire to stud/ trunk. Trunk would be a fused 4/0 to inverter. All lines would be as close to same length respective to their run. Although I feel like a fuse would mess up one leg on the trunk... something else i don't see anyone addressing. Any help appreciated
@ML-jr1yz 2 ай бұрын
The negative wire should go out to inverter from the last battery.
@sfkenergy 9 күн бұрын
Yes we show this in configuration 2, this video was to show what happens if you don't do it this way.
@simonst1308 3 күн бұрын
So - the Title is missleading for non Professional viewers
@andrewski6563 2 ай бұрын
Stack the terminals instead of bus bar?
@nikowingchun1351 2 ай бұрын
Great video man!
@KoreanTacoKing 2 ай бұрын
Does Victron have a 48v system and are you working on a 48v kit?
@Entity005 2 ай бұрын
Question. i got hold of 57 free batteries of 6volt 4,5Ah NiMH type of batterys .. Thats a lot of batteries.. i wish to make a giant powerbank in parallel connection .. Is there something i have to remeber? ... do i need thicker cables then the ones that already are on the batteries? how is it when i charge that many batteries in parallell ? do i need a super charger? or just use a normal charger that will just take much longer time? I also got a hold on 43 of 4 cells NiCd batteries with a voltage of 4,8 and they have 4,5Ah -- planned to make a 2nd powerpack with those. All batteries are only 3 years old and they are fully functional.. they had to be replaced because of strict rules on batteries that feed emergency light on ship .. they get replaced every 3 years even the law say 5 years.. guess shipping company just want to make sure their ok .. they have been maintain charged trough the years they been active.. and they only sometimes get used on test of the emergency light onboard.
@brianrhodebeck6465 2 ай бұрын
I was told that everything goes to One positive bus and 1 negative BusAnd everything is distributed charging equally. In a parallel configuration
@zugmeister314 2 ай бұрын
That would be mostly correct. The "mostly" qualification is because electricity always tries to take the shortest path to complete the circuit. Because the load wires (going to the inverter) are on one end of the bus bar the battery connected closest to that end is going to have a slightly heavier load due to its location. In another post here the guy who made the video says he's looking at making a circular bus "bar" (bus wheel?) so you can have a centrally located load / charge cable with the ones going to the battery terminals equidistant.
@michaelsharman7176 3 ай бұрын
Can I buy this switch to go with my SFK 200 amp BMS ?
@sfkenergy 3 ай бұрын
Yes you can add the 5 mode heating switch to v3.5 / v4 kits.
@user-pt1xw7fc7r 3 ай бұрын
what type of welding is used to weld to the cells terminals
@patricioramos5133 3 ай бұрын
Very good teac😊
@user-uz7gu7of1v 3 ай бұрын
Great video, it helped me figure out why I was having shut downs in my system. Love the buss bar!
@dan32one44 3 ай бұрын
Good 👍 stuff..
@Luis1968barra 3 ай бұрын
Don't buy from these people they have the worst customer service.vthey are liars . They have no customer skills. Talk bad about other sellers. But they can't even ship on time to blame it on labels. Can't even now up to their own 0:12 mistakes. Be careful they are not honest business people.
@BorgOvermind 3 ай бұрын
Higher nominal translates into lower value of current at discharge test.
@marcusmobley5411 3 ай бұрын
I really want to buy US made. I like ur batteries, but need a nice % off inspiration. All your competitors are doing it. Help us shop US confidently! Thanks!!
@SuperVstech 3 ай бұрын
You should have used a saw to cut the lug for display. The cutter you used smears the copper, and even a bad crim would look smooth…
@tomgarciaaz 3 ай бұрын
Good video. One of the odd ball things I have seen out there is others maintaining the battery to battery connections and doing bus bars.
@user-de5ml9tm6e 3 ай бұрын
Thank you much? This was a huge help!
@frankenstudio22 4 ай бұрын
Excellent video, thank you!
@gw877 4 ай бұрын
What would happen if you tapped off the middle battery.
@cuisinartOH1 4 ай бұрын
We were fortunate to have SFK send us an early shipment of eight of these for some customer projects. They are just as great as this video shows. We purchase completed units and received one with a transparent lid for demo purposes. With the transparent lid, it's easy to see how well built they are without taking them apart. This is another terrific product by SFK and I can't wait to see what they have for their next product(s)! No other battery manufacturer in this space innovates as quickly as SFK.
@tiborchren 4 ай бұрын
It would be useful to add the multiple mounting option around the whole perimeter on each side of the plastic boxes by adding many threaded inserts. Using angle bracket moutings would then allow the battery to be attached to the floor or wall. And with flat bracket motings, the batteries could be joined together.