8s LiFePO4 charging with ISDT Q8 Max

I have been considering what charging system I want to use to charge my 8s LiFePO4 cells when on the move in my Coach, and most of what I have seen doesn't either protect the battery well enough or doesn't provide enough Amps for a large install (Victron Orion)....

I have an ISDT Q8 Max (1000w) for charging R/C Aircraft, and it occurred to me that if I was to power it from my 24v Coach system when the engine is running it should easily be able to max out the Q8 and charge up to 29.2v at 30 amps (max rated current) 876watts.

Additionally I can use it as an Active Balancer with 1.5amp active balance current.


Can anyone tell me what I am missing (cells are Eve 280AH so would be charging at around 0.1c which is a safe trickle charge).

It's a viable way to charge, but without a BMS, you don't get low cell voltage or temperature protections.

Please never think of "trickle" charging a LFP cell/battery. Its not a thing. They retain their charge over long periods of time and don't need to be kept at 100%.

The only consideration with the charger is having sufficiently thick and equal length balance leads to handle the 1.5A balance current.

snoobler said:

It's a viable way to charge, but without a BMS, you don't get low cell voltage or temperature protections.

Please never think of "trickle" charging a LFP cell/battery. Its not a thing. They retain their charge over long periods of time and don't need to be kept at 100%.

The only consideration with the charger is having sufficiently thick and equal length balance leads to handle the 1.5A balance current.

Click to expand...

I will have a Daly Smart BMS (24v 500A) set to max at 3.6 and min 2.65, I want to try and keep the cells well within a safe range. Trickle charge doesn't mean I will leave it on, it means low amperage as opposed to fast charge at 1c.

Will be using an equal length silicon sheath tinned copper balance loom capable of 3amps