Li batteries at 48vdc

MEXICOWANDERER wrote:
Using less than max amperage then is a vital component of the charging protocol? A parallel would be to recharge a flooded battery with say 20 amps and when the 20 amperes on the ammeter sags then float is initiated?

This then would be is a charging algorithm. Solar or AC, is this algorithm available in a charger or controller? Lithium advertisements seem to go really light on what is needed charger wise. The intercell management protects the battery cells. What protects the bank?

2OLDMAN's battery pack data sheet is here:
http://cdn2.hubspot.net/hubfs/441554/lithium-spec-sheets/RB48V100_Spec_Sheet.pdf?t=1495820355718

Without more information on the actual cylindrical batteries used in the battery pack -analyzing charge needs is very difficult. Personally I would have great concerns over the high and low shut down points on the data sheet being effective to prevent damage to the individual cells based on my research-both of installs and white papers.

Several clear messages I have extracted from the successful users in the marine house bank usage - is never float the battery with voltage, like a LA battery likes. No need to charge full every charge cycle. Yes, occasional top off with immediate use is needed to prevent the batteries from developing a memory of partial charge. Stay out of the dramatic curve on both ends(Knees) - charge or discharge. Be conservative in charge / discharge cycles for the needed long life for a positive cost benefit life cycle.

The batteries themselves are simple but the control systems are not and must be set up to prevent over/under charging and prevent any real amount of float time. The control systems must harmonize all the charging sources to prevent inadvertent overcharge, plus warn/disconnect at the proper pack level voltages that the BMS does not protect for in this type of battery pack.

Charge > Use - Charge > Use. Discharge to ~50% DOD for any storage time.