thats what i am doing, thought of screws or tapping it, it is install and forget, rivets much easier
Cheap 4kwh LiFePO4 batteries from Batteryclearancewarehouse
- Thread starter batteryclearinghouse
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I put a connector on the board leads so I can plug in a BMS or a battery monitor. These wires are heaver and I can use them for cell specific balance work.
Heh... remember mercedesshop?
I remember always working on it, fun car, built like a tank, could hold 2 bodies in the trunk easy
got tired of moving it around all the time. loved the sound of the injectors, purringI'm new so sorry for dumb question.. gas can is sitting next to one unit but two are in the picture, correct?
Maast
Compulsive Tinkerer
Great idea, I've even got a rivet gun but it never occurred to me. In my line of work I'd be crucified if I used a pop rivet for a electrical connection.
Three total gas cans in the pictures...
Yes, pop rivets are likely the best plan, but surface prep of the plates and oxidation protection will be key.
The one I responded to. Anyway I think I can see there's two..
batteryclearinghouse
New Member
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- Dec 9, 2019
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Idea for Free (low cost) battery rack for BYD Lifepo4 units.
I just realised this as I was walking around the warehouse. These BYD Lifepo4 batteries will fit on a bolt down shelf in commerical server rack like they use in Datacenters.
We throw these away in the scrap metal role-offs every day. They have no resell value and it's really just a big hunk of scrap metal at the end of the day.
A DIY person should be able to hunt a few down for free without much drama.
A built in shelf and battery should be about 6U high.
A standard server rack is 41 U high but they go upto 48 U. Then they have half height racks. ( server cabinet space is measured by the "U"'). Those are 18, 20 and 24 U high if I recall.
The bolt in rack shelves can support up to 300-500 lbs each.
The top, sides and bottom are designed for cable managment. They are also designed for air flow.
The back and front doors can be setup with a lock for securing the setup and the all the panels removable to provide work access.
They are not flammable.
You can bolt them down for safty. There is also a lot of standardised parts/options out there. Like a ceiling mounted cable run for cable managment.
There are also sliding shelves out there but have to be very carefull to make sure only one movable shelf is out at a time to prevent a tipping hazard.
It might cost to purchase some solid shelves becouse they are not as common to run across.
Now.... I have to get some shelves and try it out.
I just realised this as I was walking around the warehouse. These BYD Lifepo4 batteries will fit on a bolt down shelf in commerical server rack like they use in Datacenters.
We throw these away in the scrap metal role-offs every day. They have no resell value and it's really just a big hunk of scrap metal at the end of the day.
A DIY person should be able to hunt a few down for free without much drama.
A built in shelf and battery should be about 6U high.
A standard server rack is 41 U high but they go upto 48 U. Then they have half height racks. ( server cabinet space is measured by the "U"'). Those are 18, 20 and 24 U high if I recall.
The bolt in rack shelves can support up to 300-500 lbs each.
The top, sides and bottom are designed for cable managment. They are also designed for air flow.
The back and front doors can be setup with a lock for securing the setup and the all the panels removable to provide work access.
They are not flammable.
You can bolt them down for safty. There is also a lot of standardised parts/options out there. Like a ceiling mounted cable run for cable managment.
There are also sliding shelves out there but have to be very carefull to make sure only one movable shelf is out at a time to prevent a tipping hazard.
It might cost to purchase some solid shelves becouse they are not as common to run across.
Now.... I have to get some shelves and try it out.
Guy Any pics please than again you do not have it setup... sounds like you have a candy store worth a visitIdea for Free (low cost) battery rack for BYD Lifepo4 units.
I just realised this as I was walking around the warehouse. These BYD Lifepo4 batteries will fit on a bolt down shelf in commerical server rack like they use in Datacenters.
We throw these away in the scrap metal role-offs every day. They have no resell value and it's really just a big hunk of scrap metal at the end of the day.
A DIY person should be able to hunt a few down for free without much drama.
A built in shelf and battery should be about 6U high.
A standard server rack is 41 U high but they go upto 48 U. Then they have half height racks. ( server cabinet space is measured by the "U"'). Those are 18, 20 and 24 U high if I recall.
The bolt in rack shelves can support up to 300-500 lbs each.
The top, sides and bottom are designed for cable managment. They are also designed for air flow.
The back and front doors can be setup with a lock for securing the setup and the all the panels removable to provide work access.
They are not flammable.
You can bolt them down for safty. There is also a lot of standardised parts/options out there. Like a ceiling mounted cable run for cable managment.
There are also sliding shelves out there but have to be very carefull to make sure only one movable shelf is out at a time to prevent a tipping hazard.
It might cost to purchase some solid shelves becouse they are not as common to run across.
Now.... I have to get some shelves and try it out.
jasonhc73
Cat herder, and dog toy tosser.
Can anybody identify a source for these connectors?
If we can wire these together, then we can bypass the BLACKBOX BYD bms with no splicing.
If we can wire these together, then we can bypass the BLACKBOX BYD bms with no splicing.
danphillips
New Member
- Joined
- Oct 29, 2019
- Messages
- 108
Keep in mind that the connection / unit on the PCB board was reported to be a temp sensor as well. I dont know how a BMS would deal with this type of connection. The best method so far is the rivet from what I can determine.
I am attempting to determine what size wire I will need to convert the battery to 2 * 12v.
I'm waiting for some equipment to do load testing, has anyone started yet ?
I like Guy's suggestion of using a server rack and some fixed shelves - this could be a cheap solution and will provide easy access with the doors and sides removed.
I am attempting to determine what size wire I will need to convert the battery to 2 * 12v.
I'm waiting for some equipment to do load testing, has anyone started yet ?
I like Guy's suggestion of using a server rack and some fixed shelves - this could be a cheap solution and will provide easy access with the doors and sides removed.
danphillips
New Member
- Joined
- Oct 29, 2019
- Messages
- 108
On the unit I did the break down on, I am working on a design to connect 2 batteries in parallel and 4 in series in a custom built PVC box. Space is limited in a boat !
Since the expanded cells are bulging in the center and not the ends my thoughts are to space the ends apart leaving some room for natural ventilation. I could then spot weld or solder (using low temp solder) copper bridges between the posts.
Since the expanded cells are bulging in the center and not the ends my thoughts are to space the ends apart leaving some room for natural ventilation. I could then spot weld or solder (using low temp solder) copper bridges between the posts.
Not a good plan...
The batteries need to be securely clamped together to keep the expansion under control.
the straps were on the ends... that’s why they didn’t expand there.
danphillips
New Member
- Joined
- Oct 29, 2019
- Messages
- 108
I agree, my plan was to put spacers between the cells to exactly space them apart and maybe even use strapping like they originally had. I don't think the cells can be re-compressed. Are you saying that the cells now that they are bulged can not be used?
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