Lithium battery that claims will work with lead acid charger

[edgeau]

This is interesting. They claim Thier Lithium is a drop in replacement for lead acid batteries. The built in BMS is supposed to cope with chargers designed for lead acid batteries.
Not an issue for me as my charger is multi chemistry but it grabbed my attention as something different.

https://www.aussiebatteries.com.au/gian ... ian~394898

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[flboy]

Maybe has a built in DC to DC converter to manage the output to LiFePo4 parameters as long as it gets a minimum input voltage.

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[RJ Howell]

I'll let someone more knowledgeable speak up, but isn't exactly what the BMS does? Takes a source and manages it for correct charging?

Drop in a vehicle I can see, but to hook it to a charger mean for LA's (or other) sounds counter productive. My understanding is the Lipo will never reach full capacity, the charger will go into float before it reaches.

Again, opinion, not fact.

[flboy]

I'll let someone more knowledgeable speak up, but isn't exactly what the BMS does? Takes a source and manages it for correct charging?

Drop in a vehicle I can see, but to hook it to a charger mean for LA's (or other) sounds counter productive. My understanding is the Lipo will never reach full capacity, the charger will go into float before it reaches.

Again, opinion, not fact.

The BMS Manages the charge by limiting the voltage and current depending on what is going on with its input and the state of charge on the battery, but I do not think it steps up a voltage it sees on the input (like 13.6V from a SLA charger to 14.4 on a LifePo4). That would require a DC to DC converter and I don't believe the typical BMS has that function.

A DC to DC battery charger does that. It takes a bit of circuitry to achieve that.

[edgeau]

Well I bought one. 130ah. It was cheaper than other Lithiums available here. After 5 months and several outings here is what I can report. Yes it happily charges to 100% whether I have the charger chem set to lead acid or lithium.
The charger always reports it is 100% State of Charge and I need to use the app and Bluetooth to see what the real SoC is. But when it needs it and the solar is pumping the charger happily supplies over 10amps to a battery it reports as fully charged. A bit strange but if it works....

Where it won't suit some applications is that it needs constant maintenance charge as you can't turn the built in Bluetooth off. That means a bad shelf life / self discharge rate. It is OK for me as I can leave it on solar when parked up at home but might be an issue for some folk.

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