Decent, inexpensive PSU or charger recommendations

[Sasa Duric]

I have 8 cell Eve LF304 (304Ah) pack in my truck and I need a grid charger as permanent installation alongside PV. Until now I have always dragged around my  20A bench PSU. 

I bought used Mean Well RSP-3000-24V on ebay but it came faulty. I have had bad luck with few other used switching server PSUs in past, so I am kind of tiered and broke from all the experimentation.

Is there any decent new chargers out there suitable for batteries like mine that can take up to 0.5C. I guess 80-100A would be decent and well below the 0.5C charging.

I am thinking about Polish made battery charger Magnum Dinamik 640 V2 that can charge 24V LiFePo4 with 100A, and have charging current adjustment. If set to LiFePo4 max voltage is 28V, but as SBMS0 take care of the cut-off, I guess I could set it at AGM/gell and than the voltage is 29.6V. The price is 220EUR which sounds attractive for 100A charger. As it has car start help function I expect it must be immune to the power surges thus of a good quality. 

https://spawarki-magnum.pl/dinamik-640-v2

[Dacian Todea (electrodacus)]

Do you need to charge at 0.5C?  Is this for emergency charging so you need to charge in less than 2 hours ?

There will be no reason for 0.5C charging if you charge overnight.

That thing looks like a welder and seems to be to light to be transformer based so likely it is inverter type.

Not sure if that thing can be controlled by the SBMS0 since that ON/OFF button may directly switch OFF the AC input current.

I will recommend for around the same price you get one of those 3000W hybrid inverter/chargers from china and use it as a charger only. It will have the same weight about 5kg and likely more reliable.

I have two of those hybrid type inverter chargers that I only use as inverters and they work everyday for many years (I think the oldest one is about 10 years).

Here is an example but there are under many brands with small differences. Just make sure it has an toggle switch ON/OFF button so that you can use that to allow SBMS0 to control it ON/OFF

https://www.aliexpress.com/item/1005006499664468.html  the   SCI-ECO-3200 will charge with 80A and should be fast enough.

If you want 100A charging get this as it is not that much more expensive https://www.aliexpress.com/item/1005008851815469.html  but is a bit larger and heavier.

You can check trough maybe hundred's of similar models as internally they use the same design and if you want to be sure it works with SBMS0 just post a link and I will take a look at it.

[Sasa Duric]

Thanks for the tip Dacian. I avoided these as I thought it makes no sense with SBMS0, but as I would like to upgrade my inverter as well, it actually makes sense now. I did not know they can charge from the grid.

I  was planing to have it as emergency charging, but not necessary 0.5C. I might add another battery, so bit more power would be better. 

Can you please explain why this is a problem:

m

"Not sure if that thing can be controlled by the SBMS0 since that ON/OFF button may directly switch OFF the AC input current."

Offer of those hybrid inverters is overwhelming. would this be good candidate: https://ebay.us/m/auuZXp

and this one: https://amzn.eu/d/a1zJysE

[Habana7]

There are plenty of good chargers, I would keep it simple and mainly for mobile use, isn't this something for you?

Op zaterdag 17 januari 2026 om 09:07:05 UTC+1 schreef sasa...@gmail.com:

[Sasa Duric]

Not really. It is underpowered. Honestly, I have not found many candidates that are min 80A.

[Habana7]

An IP67 waterproof Lifepo4 24V-50A fast charger underpowered?,  seems perfect to me, why do you think it needs 80A or more?

Op zaterdag 17 januari 2026 om 16:34:37 UTC+1 schreef sasa...@gmail.com:

[Dacian Todea (electrodacus)]

Yes both of those are good and they are actually the same just different brand and different arrangement for the connectors.

Here is a short review of mine https://groups.google.com/g/electrodacus/c/-ep59RSGjdo/m/LNlu0PsKAgAJ  also very similar to those and I used it for the past 5 years with no problem but just the inverter part as I do not have grid or a generator.

But you can not use it as both unless you add a SSR on the AC input and stop the charging that way.

You need to be able to control the charger and inverter separately.  I control the inverter ON/OFF trough the ON/OFF toggle switch. I just soldered two wires in parallel with the ON/OFF switch leave the switch on the OFF position and connect those wires to the EXT IO3 set as type 2 so that way the SBMS0 turns OFF the inverter/charger if battery is empty.

You will need a SSR on the AC input controlled by the EXT IO4 set as type 1 in order to stop the charging but still keep the inverter working.

The inverter charger that has proper separate control for inverter and charger are the Victron models but those are quite a bit more expensive than this things.   

[Sasa Duric]

OK. Thank you Dacian.