Hi everybody.
This is my first post in this forum since I discovered it by following Chris several months ago. My question.
I have to replace my Tesla Model 3 12V battery (old lead model, not NMC) this year or next one, and I was thinking about a small DYI project in order to be replaced by a LiFePO4 model. I've read some reviews about Ohmmu battery but it's really expensive and there are some problems still present although can be solved.
My main concerns are:
- Cold behavior. I live in Spain, so climate is very similar to California (also Mediterranean), so, at least when not in the mountains, temperature does not drop below 0ºC (32º F). If I had to go to a colder place, I would take and old leaf battery just in case.
- Hot behavior. It's very common to reach up to 45ºC in summer ( 113ºF) I assume that LFP pack can deal it with. On the order side, Model 3 does not get hot because there is no internal combustion engine, so it should not be a big problem. My M3 is white, by the way, so should net get very hot inside.
- Security profile. LFP do not explode but....
So, questions:
- Has anybody tested something similar?
- Required Ah capacity? I assume around 30Ah should be enough (lead one is 40Ah)
- Max amps? I assume 50 amps should be enough (when car is on it takes around 300W).
- Is this a nonsense or does it worth?
- What about going to sodium instead of LFP?
Thank you!
This is my first post in this forum since I discovered it by following Chris several months ago. My question.
I have to replace my Tesla Model 3 12V battery (old lead model, not NMC) this year or next one, and I was thinking about a small DYI project in order to be replaced by a LiFePO4 model. I've read some reviews about Ohmmu battery but it's really expensive and there are some problems still present although can be solved.
My main concerns are:
- Cold behavior. I live in Spain, so climate is very similar to California (also Mediterranean), so, at least when not in the mountains, temperature does not drop below 0ºC (32º F). If I had to go to a colder place, I would take and old leaf battery just in case.
- Hot behavior. It's very common to reach up to 45ºC in summer ( 113ºF) I assume that LFP pack can deal it with. On the order side, Model 3 does not get hot because there is no internal combustion engine, so it should not be a big problem. My M3 is white, by the way, so should net get very hot inside.
- Security profile. LFP do not explode but....
So, questions:
- Has anybody tested something similar?
- Required Ah capacity? I assume around 30Ah should be enough (lead one is 40Ah)
- Max amps? I assume 50 amps should be enough (when car is on it takes around 300W).
- Is this a nonsense or does it worth?
- What about going to sodium instead of LFP?
Thank you!
