Hello Guys,
I have read here already fora few weeks, now its my first post.
I was impressed of your builds, so I also started to recycle old ebike batteries.
For testing the cells, I use 4xOpus and take the cells which are >80% SOH and after 30 day storage min 4.1 volt.
My goal is to build a home battery with 14S &Victron Energy MultiPlus, which I want control via mqtt.
For testing I already build a 6S5P and a 7S5P battery, which works great in my ebike.
Now I have finished my first 1S60P:
Every cell is soldered with a 5A glas fuse.
I want to max draw 30A per pack, so 500mA per cell.
Negative side is also soldered for now, but I already ordered the kweld to speedup the assembly and don't stress the cell.
I think soldering on positive side is not a big problem..?
The pack isdesigned in fusion. I can share the file, if sb is interested (number of cells are changeable via parameter)
The Busbar are2 twisted copper wires with 2mm diameter.
30A charge test looks great.
But I am not sure, if it also couldhandle 60A? (If I put another 60P pack parallel).
Sure, the soldered connection between busbar and (currently) 10 awg can be done much better.
Finally I will use 10awg(for 30A)/8awg(60A) wire + AS150 connectors.
In the end there should be one reset-able circuit breakerbetween battery and inverter.
Something like this:S802PV-SD125
Would make it sense to also add a melt circuit breaker?
Do I miss something?
Happy recycling ^^
I have read here already fora few weeks, now its my first post.
I was impressed of your builds, so I also started to recycle old ebike batteries.
For testing the cells, I use 4xOpus and take the cells which are >80% SOH and after 30 day storage min 4.1 volt.
My goal is to build a home battery with 14S &Victron Energy MultiPlus, which I want control via mqtt.
For testing I already build a 6S5P and a 7S5P battery, which works great in my ebike.
Now I have finished my first 1S60P:
Every cell is soldered with a 5A glas fuse.
I want to max draw 30A per pack, so 500mA per cell.
Negative side is also soldered for now, but I already ordered the kweld to speedup the assembly and don't stress the cell.
I think soldering on positive side is not a big problem..?
The pack isdesigned in fusion. I can share the file, if sb is interested (number of cells are changeable via parameter)
The Busbar are2 twisted copper wires with 2mm diameter.
30A charge test looks great.
But I am not sure, if it also couldhandle 60A? (If I put another 60P pack parallel).
Sure, the soldered connection between busbar and (currently) 10 awg can be done much better.
Finally I will use 10awg(for 30A)/8awg(60A) wire + AS150 connectors.
In the end there should be one reset-able circuit breakerbetween battery and inverter.
Something like this:S802PV-SD125
Would make it sense to also add a melt circuit breaker?
Do I miss something?
Happy recycling ^^