brianjonesphoto
New Member
Hello all
I’ve got an odd ball situation and I’m trying to figure out the best solution.
I have a travel trailer with a 4s 150ah battery running an ElectroDacus sbms0 with a dssr20 and 200 watts 12v solar.
When camping we generally ride our electric dirtbikes. The bikes have a total of 7200wh of capacity. They are a mix of 48v and 52v systems. I want to avoid running a generator this year. So we will be using adding battery and solar capacity for this summer. Starting with battery as the first step.
My original plan was upgrading the trailer to 8s 304ah setup. After some thought I realized this would lock a 8kWH battery to something that is not always in use. After spending $1500 on the battery upgrade it would be nice to be able to use it for power outage backup and anything else that comes up.
I pivoted to making the 8kWH battery portable so I decided to abandon the sbmb0 for a more conventional bms to save space and potential connection issues. This has created a new challenge. I still need a battery to power the trailer. I want to be able to use the 8kWH battery to power the trailer if needed but it also needs its own battery for basic functions. 1200wh should be plenty to get us through a typical camping trip as we only have smallish DC loads. I’m thinking maybe 8s 50ah or keeping the 4s 150AH in place
In order to have the portable and trailer batteries play nicely I assume they both need to be 24v systems with their own bms. How can I design a system that has solar power available to each of the batteries with very different capacities and charge rates (304ah and 50ah) as well as have excess solar available for diversion for water heating.
Thank you.
I’ve got an odd ball situation and I’m trying to figure out the best solution.
I have a travel trailer with a 4s 150ah battery running an ElectroDacus sbms0 with a dssr20 and 200 watts 12v solar.
When camping we generally ride our electric dirtbikes. The bikes have a total of 7200wh of capacity. They are a mix of 48v and 52v systems. I want to avoid running a generator this year. So we will be using adding battery and solar capacity for this summer. Starting with battery as the first step.
My original plan was upgrading the trailer to 8s 304ah setup. After some thought I realized this would lock a 8kWH battery to something that is not always in use. After spending $1500 on the battery upgrade it would be nice to be able to use it for power outage backup and anything else that comes up.
I pivoted to making the 8kWH battery portable so I decided to abandon the sbmb0 for a more conventional bms to save space and potential connection issues. This has created a new challenge. I still need a battery to power the trailer. I want to be able to use the 8kWH battery to power the trailer if needed but it also needs its own battery for basic functions. 1200wh should be plenty to get us through a typical camping trip as we only have smallish DC loads. I’m thinking maybe 8s 50ah or keeping the 4s 150AH in place
In order to have the portable and trailer batteries play nicely I assume they both need to be 24v systems with their own bms. How can I design a system that has solar power available to each of the batteries with very different capacities and charge rates (304ah and 50ah) as well as have excess solar available for diversion for water heating.
Thank you.
