I have just replaced all the Electrical charging and inverting system on my boat with Victron Multiplus, Victron MPPT 100/50, Bluetooth battery sense and SmartShunt 500. Then I bought two Discover drop (internal BMS only) in 200AH LiFePO4 batteries.
I hope someone can help me determine the best charge settings for the MultiPlus and MPPT Charge settings as the Discovery battery electrical specs are slightly confusing.
ELECTRICAL SPECIFICATIONS
Open Circuit Voltage (V) 12.8
Charge Voltage (Bulk Vdc) 13.8 - 14.2
Max Absorption Voltage (U1 Vdc) 13.8
Float Voltage (U2 Vdc) 13.6 BMS Max.
Voltage protection (Vdc) 14.6 (Approximately)
Suggested Low Voltage Cutoff (Vdc) * 12 BMS Min.
Voltage protection (Vdc) 10.0 (Approximately)
Max. Continuous Charge Current (I Max. Adc) 150 Min.
Finishing Charge Current (I Min. Adc) 2%-3% C1 / Min. 200ma
Max Continuous Discharge Current (Adc) 150
Max Peak Current (Adc) 250 A RMS (2 sec)
Self-Discharge (25°C / 77°F) < 3% per month
Charge Temperature Min: 0°C (32°F) | Max: 55°C (131°F)
Discharge Temperature Min: -20°C (-4°F) | Max: 60°C (140°F)
Storage Temperature Min: -10°C (14°F) | Max: 30°C (86°F)
Electrical Specifications at 25°C. * Do not exceed maximum voltage at the battery terminals. CAUTION: Extra considerations must be given to depths of discharge, operating voltages and currents when designing systems for use at maximum operating temperatures.
The Discover Bulk Range from 13.8-14.2 verses the Max Absorption Voltage of 13.8 is what confuses me. In Victron Multiplus terms and the MPPT, does this mean I should set these values to exactly 13.8V instead of 14.2 for absorption and is this enough voltage.
Does anyone have all the recommended charger settings for the Multiplus in this case?
Thanks so Much
