Currently I have a MPPT 75/15 connected to a singe 100Ah lithium battery. Does this charge controller has a maximum battery size it can charge? Say for example I add a second 100Ah battery in parallel.
Would it be able to charge that 200Ah total?
asked
MPPT 75/15 max battery capacity?
doubling the capacity simply doubles the required charging time, independent from the charger you use as long as the charger fits to battery voltage and battery chemistry
@Al Would it be able to charge that 200Ah total?
Yes it would, given enough sun, panels, and time...
Would it be practical to recharge a 200Ah battery at a max of 15a? Not for regular use, or under less than ideal solar conditions.
Cool. Thanks I really appreciate your help.. I just bought a Victron Energy Blue Smart IP22 Charger 12/15. Can that do 200Ah too?
To my understanding (and experience) all sources for charging, no matter the power of the charger, gives you charging. It is just a matter of time. In practice you must get enough charging compared to your consumption.
Take solar as an example. A cloudy day, or even several, might give almost nothing during this period. That means you need a bigger battery (bank) if you need continuous supply.
So, your chargers will do fine as long as they can provide what you consume.
