For reference I used this Box from Wickes
£23 and it fits 16 Eve cells perfectly (and has wheels)
https://www.wickes.co.uk/Strata-Heavy-D ... torage+box
The batteries are heavy so I used a piece of 12mm ply in the bottom to strengthen it.
I mounted this fused battery disconnect to the side of the box
https://www.solar-wind.co.uk/off-grid-p ... 0a-to-160a
£60 including two 100amp fuses
I used a piece of ply on the inside of the box and screwed through the box to the ply when mounting the battery disconnect. This gave a really secure mount for the fused disconnect and let me fit a shelf to hold the BMS
My BMS is the JK B2A24S20P bought from the Aliexpress JK store for £134.62, just under the £135 you would have to pay import duty on. This is the one with the 2amp balancing current and Can Bus
The BMS came with a push switch to turn it on (unlike the earlier versions) so drilled a hole in the box to mount that. The wires were short so I used a mini bus bar from Amazon to extend the negative from the BMS to the battery disconnect.
Cells were $2051 USD at the time I bought them, about £1694 including all shipping and taxes due delivered to my door.
I already had some spare cable and sundries so all in it cost me about 1900 for 15kwh of storage
I have chosen not to compress the cells much and just wrapped them in thick plastic I had left over from a damp course on a concrete floor and then wrapped them 4 at a time with fibre glass reinforced packing tape from Toolstation. I did them in groups of 4 as I could just about lift 4 at a time into the box.
I made up some cables and initially charged the batteries in banks of 4 using a 12v charger until they were close to 3.5v per cell. Then I connected them all together and used my bench power supply to bring them all up to just under 3.65v and left them for a day to complete the top balance.
Then I used the bus bars that came with the batteries to assemble them into a 16 way pack.
I chose to drill and tap the bus bars to connect the leads from the BMS. I then 3d printed some terminal covers for extra piece of mind even though the battery box has a cover. I used 5 amp fuses in holders on all the connections from the BMS
ALAN/ALAN D wrote: ↑Mon Jan 09, 2023 10:02 am
LifePO4
16 230Ah
Not got them delivered yet.
Not seen any information on best way to mount / use them.
Some people are.
Using threaded rod to compress the battery.
Side to Side.
To stop the battery expanding when it warms up.
But not end to end / Top to bottom. ?
Some are mounting them vertical. Some horizontal.
I am thinking horizontal. If metal things get dropped on them, possibly better of ?
But horizontal. Is there chance of leakage around the terminals . ?
Not seen any information on web sites about how to position them.
Use foil backed insulation on all sides / bottom.?