Still waiting for the charger, so the Astron will have to do. Power outage may happen before charger arrives, so want this charged up. #battery#LiFePO4#projects
@ai6yr I used an old lead acid battery and a cheap low-current battery charger for a power supply for my radio in college.
@cgervasi I've done that many times! LiFePO4 is far lighter and (in theory) will last a lot longer... plus it stays at a much higher voltage through the discharge curve.
@ai6yr i am dying to know if i can buy one of those 240v bluetti systems, and plug it into the outside of my house in place of 'the grid', and dump that battery into my powerwalls. i wonder if i can charge the bluetti with my 120v generator, then dump that juice into the powerwalls, since they only work on 240
@Viss Seems like you're going to get a lot of conversion loss going from DC->AC->DC.
Charging voltage on LiFePO4 is is 14.6V, float is 13.5V... this Astron not set that high--13.8V--, so... mileage here may vary, may not charge up much.
@ai6yr I think you can adjust the Astron’s voltage up for exactly this reason. There should be a widget to fiddle inside.
Comments
Displaying 0 of 3 comments
Charles J Gervasi ⚡🛡️🥥
In response to this post@ai6yr I used an old lead acid battery and a cheap low-current battery charger for a power supply for my radio in college.
@cgervasi I've done that many times! LiFePO4 is far lighter and (in theory) will last a lot longer... plus it stays at a much higher voltage through the discharge curve.
by AI6YR Ben ;
Mentions: @ai6yr@m.ai6yr.org
Likes: 0
Replies: 1
Boosts: 0
Viss
In response to this post@ai6yr i am dying to know if i can buy one of those 240v bluetti systems, and plug it into the outside of my house in place of 'the grid', and dump that battery into my powerwalls. i wonder if i can charge the bluetti with my 120v generator, then dump that juice into the powerwalls, since they only work on 240
@Viss Seems like you're going to get a lot of conversion loss going from DC->AC->DC.
by AI6YR Ben ;
Mentions: @ai6yr@m.ai6yr.org
Likes: 0
Replies: 1
Boosts: 0
AI6YR Ben
In response to this postCharging voltage on LiFePO4 is is 14.6V, float is 13.5V... this Astron not set that high--13.8V--, so... mileage here may vary, may not charge up much.
@ai6yr I think you can adjust the Astron’s voltage up for exactly this reason. There should be a widget to fiddle inside.
by Tony Yarusso ;
Likes: 0
Replies: 1
Boosts: 0