LiFePo battery upgrade question

Teleman wrote:
I ordered a 200AH LifePo battery to replace my two 100AH lead acid batteries and also a compatabile converter which takes care of charging the battery with shore or generator power but what about charging the battery with the alternator? Does the battery's BMS take care of everything and therefore no need to change or upgrade the alternator? Sorry if this is a dumb question!

Since I do not charge from the vehicle, I can only provide you with an estimate…I too have a single 200a/h LFP, but the overwhelming majority of charging is provided by 440w of solar harvest…Having said that, the most shore power amperage I’ve ever witnessed the single battery to take (using an onboard100ainverter-charger) is between 65-70amps with a tapering down trend as voltage slowly begins to rise.

So my best advice is that IF this amperage represents about 25% of your alternator’s capacity (roughly speaking) your probably not going to have an issue, but in the end, the length and AWG size of your alt-to-batt charge wire may in fact be the real limiting factor…If you have a ‘smart batt’ (with bluetooth) or a decent shunt based SOC battery meter to monitor current, the best way to know may be to first try out what you have to determine the results…

3 tons