TimC
WI/UP Border
- Joined
- Apr 17, 2020
- Messages
- 139
I'm wondering about top balancing duration.
I've paralleled 16 lifepo4 75ahr batteries and have been attempting to top balance them. They seem to be stuck at 3.34v. They are currently at 3.34v after sitting off the charger for 12 hours (wasn't around to monitor the charger today).
The power supply is a longwei 10a 30v variable like Will shows in some of his top balancing videos.
If I set the PS at 3.6v and max amps the display always drops to read 3.4v and doesn't move below 10.1 to 10.3a. It has been like this for each daily charge session for two days straight.
I see on some voltage charts for lifepo4 that 3.33 is somewhere around 90% charged.
The cells have been charging for five days almost non stop. Now that they are above 3.33v I shut it down at night when I can't monitor them.
Does this seem like a normal amount of time to get these top balanced? Though this is a small battery it is larger than anything I've ever top balanced. My only experience is with paralleled 32650 cylindrical banks. Is this a "just be patient" situation?
If I set the PS at 3.3
I've paralleled 16 lifepo4 75ahr batteries and have been attempting to top balance them. They seem to be stuck at 3.34v. They are currently at 3.34v after sitting off the charger for 12 hours (wasn't around to monitor the charger today).
The power supply is a longwei 10a 30v variable like Will shows in some of his top balancing videos.
If I set the PS at 3.6v and max amps the display always drops to read 3.4v and doesn't move below 10.1 to 10.3a. It has been like this for each daily charge session for two days straight.
I see on some voltage charts for lifepo4 that 3.33 is somewhere around 90% charged.
The cells have been charging for five days almost non stop. Now that they are above 3.33v I shut it down at night when I can't monitor them.
Does this seem like a normal amount of time to get these top balanced? Though this is a small battery it is larger than anything I've ever top balanced. My only experience is with paralleled 32650 cylindrical banks. Is this a "just be patient" situation?
If I set the PS at 3.3