Batttery chargers for LiFePo3

[RoamingKat]

Before I knew I was going to go with these lithium batteries I had already purchased a renogy 2000w inverter/charger.

Invert is good.  But, I cannot use the charger half of it.   It has multiple setting for the charge side.   None are a good fit.   The closest has 14.6 volts output.    That is actually the point at which the BMS will shut down charging to protect the batteries.

So...I plan to pull the renogy out completely.   Replace with two devices....the inverter seems easy to find.   But, a charger that delivers max current with a max volts of 13.8 to 14.1 ....  ?   Can’t seem to find one 

Basically, this is really a converter.   Shore power in, 12v out.

Anyone have an idea where to look?

[Optimistic Paranoid]

Sterling Power is a British company with a US subsidiary that specializes in Marine electronics.  They have battery chargers that have multiple settings, including LiFePo.

http://www.sterling-power-usa.com/sterli...r-pfc.aspx

[RepublicOfTXPatriot]

Before I knew I was going to go with these lithium batteries I had already purchased a renogy 2000w inverter/charger.

Invert is good.  But, I cannot use the charger half of it.   It has multiple setting for the charge side.   None are a good fit.   The closest has 14.6 volts output.    That is actually the point at which the BMS will shut down charging to protect the batteries.

So...I plan to pull the renogy out completely.   Replace with two devices....the inverter seems easy to find.   But, a charger that delivers max current with a max volts of 13.8 to 14.1 ....  ?   Can’t seem to find one 

Basically, this is really a converter.   Shore power in, 12v out.

Anyone have an idea where to look?

Would looking for ones for TT's work too. I would imagine so. I got my last one off "Amazoo" for my TT. Have you tried looking at camper sales. service places? They are usually much higher than Amazon. I'm sorry..I do not know near as much as I should about these things.

[sternwake]

You can still use your existing charger, as it will take some time before the voltage gets that high with depleted batteries, you just have to be there to stop the charger when the voltage climbs to your desired range. it can be used as a bulk charger to this point, and you always have the safety of the BMS to disconnect.

Progressive dynamics makes lithium chargers but they too list 14.6v.

https://www.progressivedyn.com/specialty...-chargers/

The Iota charger/ converters, that do not have the IQ4 feature, will only do 13.6 or 13.8v max.

You can get a Powermax adjustable voltage converter, and set the voltage manually to 13.8v. Normall the powermax are 3 or 4 stage for lead acid but can be used as manual chargers.

I use an adjustable voltage power supply, meanwell rsp-500-15, and it is capable of any voltage between 13.12 and 19.23v and has 40 amps to get the battery to the chosen voltage, but the voltage adjustment potentiometer needs improvement if adjustment is required often, and more ventilation and heatshinking is recommended if 40 amps max output is going to be regularly asked of it.

I am not really aware of any chargers that are ideal for lithium, that does not mean they do not exist, only that i have not gone there.

[tx2sturgis]

If the LiFePo3 is the same or close to a LiFePo4 maybe a charger like this will work:

https://www.bioennopower.com/collections...-bpc-1520a

[RoamingKat]

Unfortunately, it also runs at 14.6. This is where the BMS will shut it down.

The description on this also states that there may be some batteries that cannot handle the charge voltage it delivers.

[Scott7022]

The Sterling products are the only ones my marine engineer will use. 1000 amp hours of Lithium is a lot of money to cook. Base install on most of the big yachts he works on is around 1000. Check out Battle Born in Nevada they have recommended product chargers and if I remember correctly their BMS cuts off at the same voltage.

[frater secessus]

None are a good fit.   The closest has 14.6 volts output.    That is actually the point at which the BMS will shut down charging to protect the batteries.
...
But, a charger that delivers max current with a max volts of 13.8 to 14.1 ....  ?   Can’t seem to find one

According to pg 14 of GEL 1 settings (switch position 1) for that unit are:

Gel 1
14.0V abs
13.7V  float

which is pretty danged close.