4. Feature details
Procurement and installation of a 72V 432 Ah LiFePO4 battery for use with transportation vehicles. Within Srinakharinwirot University Ongkharak (EV) amount 7 cars consisting of

4.1 Battery: 14 sets (install 2 sets per EV)

4.1.1 Output DC voltage at 70 to 72V or within the appropriate voltage range according to engineering principles
4.1.2 The output DC voltage range can be used in the range of 56 to 84V to cover current systems and be compatible with future EV electrical systems.
4.1.3 Electricity supply capability at 216 Ah per set (total to 432 Ah per EV)
4.1.4 Supported power ratings at 15.552 kWh per set (a total of 31.104 kWh per EV)
4.1.5 Continuous charging current 0.3 C
4.1.6 Operating temperature range between 0 to 55 ° C for charging and -20 to 55 ° C for use
4.1.7 The battery has a working range between 35 - 85% SOC or better.
4.1.8 The amount of electrical energy accumulated if not used for a long time is in the range of 40% to 70% or better.
4.1.9 The optimum temperature range for inactivity conditions for 1 month is in the range -20 - 45 ° C.
4.1.10 The optimum temperature range for inactive conditions for 1 year is in the range 0 to 25 ° C.
4.1.11 Storage humidity at 50% or better
4.1.12 The number of battery charge cycles is not less than 2,000 times at 80% of the battery capacity discharged compared to the total capacity

4.2 Charger: 14 sets (install 2 sets per 1 EV)

4.2.1 Input Voltage Range is in the range of 90 to 265 V
4.2.2 Input Current not less than 16 A
4.2.3 Output Rated Voltage not less than 72 V
4.2.4 Maximum Output Voltage not less than 99 Vdc.