Lifepo4 Charging on boat

[BDDARL]

I want to charge my Lifepo4 battery, where it is alwavs
plugged into shore power AC charger when not in use. Like a MinnKota
charger and lead acid batteries work. Ampere Time says
not to leave charger plugged in, as it will ruin battery.

If charger goes into trickle charge when charge is
complete (Battery fully charged) and battery has a BMS that protects against
overcharging... What damage could leaving battery/charger plugged in full time cause?

Battery: Ampere Time 12v 100Ah Lifepo4
Charger: Ampere 14.6v 10A (new version, black case). Or other third party brand if recommended.

 

[sunshine_eggo]

LFP held at a high voltage damages them.

Even without holding them there, letting them sit at 100% SoC can damage them, particularly if they are in a warmer climate.

If you need to leave shore power plugged in, best to float them around 13.2V if possible.

 

[curiouscarbon]

best to float them around 13.2V if possible.

13.2 V / 4 cells = 3.3 V / 1 cell
26.4 V / 8 cells
52.8 V / 16 cells
LFP float voltage

 

[BDDARL]

I ended up ordering a Minn Kota LiFePo3 charger…. Model MK110 PCL. It is new this year(2022).

It is supposed to be optimized for LiFePo3 batteries. It says it will charge to full then turn off, monitoring until charge drops below 13.2 before resuming the charge. Have not received as it is currently back ordered till early March.

Also getting an Antigravity (Lithium) Battery Monitor so that I can monitor status remotely.

Thanks for the feedback.

 

[Don B. Cilly]

How do you monitor it "remotely" if it's Bluetooth? Bluetooth is not even remotely apt for remote ;·)

[Side Note] Po is Polonium (pretty nasty stuff actually ;·) PO4 is phosphate (One P - phosphorous - four O - oxygen). Po3 is... something you could use to poison your aunt, probably :·) Phosphorous can be pretty dodgy stuff itself, but phosphates tend to be OK.
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