terrahawk
New Member
I am participating in a NASA robot contest and I want to ask if large LiFePO4 batteries are a viable alternative to cu$tom packs?
Basic details are this:
- Robot has to run for 15 days/nights as continuously as possible.
- Location is Southern CA desert. Temps expect to range from ~95F to ~50F
- peak vehicle draw is ~300 amps @ 48 volts for a few seconds
- need 200 amp draw for 5 minutes at 50% duty cycle for 60 minutes once per day
- need 50 amp draw for 5 minutes at 50% duty cycle for 60 minutes once per day
- most of the time, the current draw is about 25 amps
- Two sets of batteries, one being charged (off vehicle) and one being discharged, they will be swapped as necessary.
Simpler is better. Fewer batteries, integrated BMS.
I have seen some batteries with 200 amp BMSs and short term testing up to 450 amps.
Is there a moderately priced solution that works?
Thank you!
Basic details are this:
- Robot has to run for 15 days/nights as continuously as possible.
- Location is Southern CA desert. Temps expect to range from ~95F to ~50F
- peak vehicle draw is ~300 amps @ 48 volts for a few seconds
- need 200 amp draw for 5 minutes at 50% duty cycle for 60 minutes once per day
- need 50 amp draw for 5 minutes at 50% duty cycle for 60 minutes once per day
- most of the time, the current draw is about 25 amps
- Two sets of batteries, one being charged (off vehicle) and one being discharged, they will be swapped as necessary.
Simpler is better. Fewer batteries, integrated BMS.
I have seen some batteries with 200 amp BMSs and short term testing up to 450 amps.
Is there a moderately priced solution that works?
Thank you!