I didn't top balance my packs before installing

[Saladin]

I would like to find a product I could limit to sub 54Vdc for a 15S pack. For some reason and it's not rational. I just don't fancy gear that looks like lab power supplies. Not in my home anyway.

I've never seen a Lab PSU look like this before.
Besides Elteks are telecoms gear.





It's a fully programmable 60A @ 12V > 72V Mains + Solar Hybrid Charger.
The Elteks are in series feeding the TS MPPT Solar Input with a changeover contactor for real solar when they're depowered.

[Joeboy]

I would like to find a product I could limit to sub 54Vdc for a 15S pack. For some reason and it's not rational. I just don't fancy gear that looks like lab power supplies. Not in my home anyway.

I've never seen a Lab PSU look like this before.
Besides Elteks are telecoms gear.





It's a fully programmable 60A @ 12V > 72V Mains + Solar Hybrid Charger.
The Elteks are in series feeding the TS MPPT Solar Input with a changeover contactor for real solar when they're depowered.

I was waiting to hear it start ticking. It's a neat build. What sort of weight is it? Looks average toolbox in size. I didn't know that Elteks are telecoms sourced. Learning all tge way up.to the end of the year.

[Stinsy]

I would like to find a product I could limit to sub 54Vdc for a 15S pack. For some reason and it's not rational. I just don't fancy gear that looks like lab power supplies. Not in my home anyway.

I've never seen a Lab PSU look like this before.
Besides Elteks are telecoms gear.





It's a fully programmable 60A @ 12V > 72V Mains + Solar Hybrid Charger.
The Elteks are in series feeding the TS MPPT Solar Input with a changeover contactor for real solar when they're depowered.

Now that really is a beast!

They've spent a lot of money engineering those heatsinks!

[Tinbum]

My first ventures with elteks were with that type. You can change the voltage easily using the small potentiometer in the front panel. Each will do 1kW.

[Saladin]

It's called the Souper Charger.

100% passively cooled. so yes clever and efficient design, no noisy fans pulling dust through the gubbins.

I was waiting to hear it start ticking.

I get comments like that regarding a lot of my builds. Sometimes I wonder if it's something subliminal in my consciousness, or the observer or the nature of my function over form assembly process. I suppose automation is automation the subtle difference being what the triggered load is...

Tis a bit weighty...~3>5 kg ballpark

It was inspired by a MasterVolt Combi lump I had expiring (failed to synchronise and went bang) because it was mutton dressed as lamb.

That era of Elteks are stand-alone capable. The modern ones are more powerful, smaller & lighter with active cooling and a central command unit required to drive them which makes them a proprietary write-off for me.

You can turn any MPPT into a mains charger with a PSU. You just need to exceed the absorption voltage of the battery by ~3Volts.

I prefer Studer Xtenders because they can dump power upstream by posing as a GTI to drop to float voltage after absorption which is very handy because Li-ion doesn't like being fully charged & especially not maintained at high SOCs.

[bpabpa]

I have one of these.

https://www.ebay.co.uk/itm/286198771070

Rescued a pylontech 2000 that had got its cell voltage in a twist.

Will also use it as a supplemental charger to enable a bigger battery pack than I can charge with my inverter in the IOG low tariff period.

Ben is very helpfull and can repair Pylontechs. He apparantly has 40 in his own setup.

[Stinsy]

I have one of these.

https://www.ebay.co.uk/itm/286198771070

Rescued a pylontech 2000 that had got its cell voltage in a twist.

Will also use it as a supplemental charger to enable a bigger battery pack than I can charge with my inverter in the IOG low tariff period.

Ben is very helpfull and can repair Pylontechs. He apparantly has 40 in his own setup.

That's a cool piece of kit!

[Saladin]

You can turn any MPPT into a mains charger with a PSU. You just need to exceed the absorption voltage of the battery by ~3Volts.

I forgot to mention..."as long as there's a current limit in the system somewhere so you don't overload your PSU".
This can be as simple as using a 20A PSU with a 15A MPPT solar controller.

Tristars, Prostars, Genstars all have this feature you set with the programmer (or display for a ProStar "M" version...perhaps GenStars too but I've not tried them)



The Souper Charger has two current limits one in the Elteks (trimpot dial) and one in the TS MPPT

If you set the Fixed Array Voltage Target it'll be more efficient in mains charger mode at the cost of losing MPPT functionality in True Solar mode.
It's a bittov trial and error dialling it in and we're talking 1 < 5% efficiency increase

[Joeboy]

I have one of these.

https://www.ebay.co.uk/itm/286198771070

Rescued a pylontech 2000 that had got its cell voltage in a twist.

Will also use it as a supplemental charger to enable a bigger battery pack than I can charge with my inverter in the IOG low tariff period.

Ben is very helpfull and can repair Pylontechs. He apparantly has 40 in his own setup.

That's a cool piece of kit!

it is isn't it. If you ever see two up for sale i'll take 1!

[Tinbum]

You can get them on aliexpress.