SPIM08HP 6p, 14S, 2.5 KWh batteries made from 7pc BatteryHookup 36V SPIM08HP packs. Easy build.

[Solexx X]

I bought 7 of the BatteryHookup SPIM08HP packs and just wired the first of 5x 48 volt batteries with a 14s Heltec active balancer and a Daly BMS. When I assembled them the donor cells were not balanced with the 36 volt pack cells. On the first charge the Heltec balanced all the cells to within 2 millivolts. Each of the remaining 4 batteries will get their own Heltec and a 100A Daly dumb BMS. All 5 batteries for 12.5 kWh's will connect to a us bar so if one has a problem the others will continue to function. They will be charged with 6kW of solar and a 5KW inverter/charge controller. I'm very impressed with the capacity and power of these cells so far.

 

[Solexx X]

This is the same chemistry as 18650s

 

[OffGridInTheCity]

I bought 7 of the BatteryHookup SPIM08HP packs and just wired the first of 5x 48 volt batteries with a 14s Heltec active balancer and a Daly BMS.

Looks nice. How do you plan to use it?

 

[Solexx X]

Looks nice. How do you plan to use it?

I'm going to use the 5 of them in parallel for a 12.5kWh powerwall. I see they are in stock again so I may buy another pallet of the 36 volt ones and make 5 more. $1750 from battery hookup for 12.5 kWh is a really good price and they go together like lego.

 

[Solexx X]

Another forum banned me because I posted the same photos on several references to the same cells. The reason was spam? We really should celebrate cheap renewable/reusable battery technology. Please don't ban me for going a different direction and sharing it. We are all in this because we care about the future of the world and our ability to cope with the changes that are already happening.

Cheers
Peter

 

[OffGridInTheCity]

Banned for building a DIY powewall with second hand cells? Yikes! Everyone here would be banned

 

[copec]

Thanks for documenting your build! I've built a battery ~5 years ago which ended up using 63 leaf modules and need to add more as I'm converting everything to electric (and eventually need to cycle them out, although they don't seem to have lost much capacity). That process was a pain, love the idea of just putting stuff together, this looks perfect.

 

[Korishan]

Please don't ban me for going a different direction and sharing it

We won't ban you for posting battery related content. That's kinda the purpose of this forum

It's possible the other forum site might have a bot that does auto-spamming for detected spam, regardless if it really is or just a false positive. Pretty bad if that's the issue. If it was a person who did the banning, then they must have some really strict rules, or the person didn't actually look at the content and did auto-ban based on a report by another user.

 

[Solexx X]

I did post the photos in more than one place but they were all specifically about the SPIM08HP cells. These cells are used in lots of heavy equipment applications and I was fishing for like minded people to get feedback. Pretty dumb in my mind to ban someone who is sharing something new and just looking for constructive discussion without so much as a warning. Their loss as far as I'm concerned.
Their are going to be lots of these pouch cell batteries available as they are swapped out on contract so I think we should give them a Second Life.

Cheers,

Pete

 

[DG98]

Thanks for documenting your build! I've built a battery ~5 years ago which ended up using 63 leaf modules and need to add more as I'm converting everything to electric (and eventually need to cycle them out, although they don't seem to have lost much capacity). That process was a pain, love the idea of just putting stuff together, this looks perfect.

I also used Leaf modules -- my current battery has 98 of them (14s14p). It has been in use for over a year and I'm very happy with it. I thought assembly was very easy, but I also had a lot of good parts to use since I bought two full battery packs to dismantle -- I reused the endplates, etc. I did buy aluminum busbars and drilled them so I could bolt to the module terminals.

Overall I have been happy with the Leaf-based battery, and I wish I had bought four packs instead of just two -- prices have gone way up since I first acquired mine. I now find myself looking at the SPIM units pretty regularly just because they are also insanely easy to assemble into custom packs.

Cheers, John

 

[Solexx X]

I also used Leaf modules -- my current battery has 98 of them (14s14p). It has been in use for over a year and I'm very happy with it. I thought assembly was very easy, but I also had a lot of good parts to use since I bought two full battery packs to dismantle -- I reused the endplates, etc. I did buy aluminum busbars and drilled them so I could bolt to the module terminals.

Overall I have been happy with the Leaf-based battery, and I wish I had bought four packs instead of just two -- prices have gone way up since I first acquired mine. I now find myself looking at the SPIM units pretty regularly just because they are also insanely easy to assemble into custom packs.

Cheers, John

The SPIM08HP packs are quite easy to reconfigure from 36 volt to 48 volt with most of the existing hardware. I'll post some more photos when I get the steel rack welded up and have done a capacity test on all 5 packs together.

Cheers to you as well,
Pete

 

[MiguelitoHancho]

The SPIM08HP packs are quite easy to reconfigure from 36 volt to 48 volt with most of the existing hardware. I'll post some more photos when I get the steel rack welded up and have done a capacity test on all 5 packs together.

Cheers to you as well,
Pete

Hey Solexx , wondering how your pack is holding up. Do you have any screen shots of their balance? I’ve been contemplating adding a bank from these cells to my existing system, can’t beat the price that’s for sure. I’ve used these in the past for a drift trike and they seem alright. Cheers

 

[Solexx X]

Hey Solexx , wondering how your pack is holding up. Do you have any screen shots of their balance? I’ve been contemplating adding a bank from these cells to my existing system, can’t beat the price that’s for sure. I’ve used these in the past for a drift trike and they seem alright. Cheers

I'll add some photos soon. I'm putting the 5 batteries in a big steel contractor box.

Cheers,
Pete

 

[Solexx X]

Hey Solexx , wondering how your pack is holding up. Do you have any screen shots of their balance? I’ve been contemplating adding a bank from these cells to my existing system, can’t beat the price that’s for sure. I’ve used these in the past for a drift trike and they seem alright. Cheers

I put heltec active balancers on each of the 5 batteries and a on/off switch on the balancers. Without the balancers they were between 46 and 15mv when I was cycling the batteries using a 650 watt dehumidifier as a load. My plug in charger is just 20 amps so cycling takes some time since its a a 12.5kWh battery. One of my balancers was NFG so it is the battery with the higher (46mv) cell deviation. When i pluged in a good balancer to this battery it balanced overnight to 2mv deviation like the other batteries. I'm waiting for the replacement balancer from Heltec. I've been busy building a 24 panel solar power trailer that I intend to install the battery box in so my new batteries are are waiting for this project to be completed. The trailer will have 3 sets of 8 panels in welded steel frames that will fold out and up into one array that is 8 panels by 6 panels, in landscape configuration. I'm going to use the power trailer as a plug in generator for my house as well as a portable power station. I'll send some photos when I get closer to completion. Cheers!

 

[DG98]

Very interesting -- I can't wait to see the trailer. Is it 24 or 48 panels? I was a little confused by your message above. In either case, it's going to be a pretty massive affair when deployed. Are you using hand crank style (or even electric) cable winches to hoist the array up and down? Steel frames plus eight panels per section is going to be a substantial weight. I'm excited to see the mechanism involved -- thanks for the update.

Cheers, John

 

[sunnyeveryday]

Solexx X:

Any more pictures and info ?

 

[Solexx X]

Solexx X:

Any more pictures and info ?

I got sidetracked by the heatwave/rain/heatwave/rain. I have only one frame of the 3 built and painted. I don't have a shop large enough to build the frames in so welding outside in the extreme weather we have been experiencing has been a bitch. I haven't even started modifying the old double axel trailer yet. The 5 batteries I built are being cycled to run a 1000 watt portable AC and charging from 8 panels in the frame on sawhorses in the backyard. I'll post some photos when I get more done.