PD or Iota for my upgrade?
I'm thinking about a converter and battery upgrade. The batteries will be wet cell lead acid 6 volt Possible T-105s or the 230AH, EGC2 from Sam's club. I'll probably go for four. (Does nayone have...
Forum Discussion
The ratio of battery capacity in AH wrt the charging current in the bulk stage determines when tapering starts at any Vabs. The higher the current the sooner at a lower SOC tapering will start. If the current is too high battery voltage will spike so that tapering will start right away and you get no constant current stage.
The idea you can have the bulk stage go until 90% SOC only applies at a low charging rate wrt battery capacity. At a higher rate such as you want to reduce gen time doing 50-90s, expect tapering to start at 70ish percent SOC where Vabs is in the low 14s.
Raising Vabs to 14.8v will make bulk last a little longer than at 14.4v but then at that 14.8 Vabs now you will still get earlier tapering at a lower SOC with higher charging rates.
It is still faster to do a 50-90 with the higher charging rate and earlier tapering though. Even though the current is tapering from 70% it is still higher from 70-80 SOC than the constant current would be in bulk at a lower charging rate where tapering starts at 80%, and that makes the accumulated AH more in that same time.
The idea you can have the bulk stage go until 90% SOC only applies at a low charging rate wrt battery capacity. At a higher rate such as you want to reduce gen time doing 50-90s, expect tapering to start at 70ish percent SOC where Vabs is in the low 14s.
Raising Vabs to 14.8v will make bulk last a little longer than at 14.4v but then at that 14.8 Vabs now you will still get earlier tapering at a lower SOC with higher charging rates.
It is still faster to do a 50-90 with the higher charging rate and earlier tapering though. Even though the current is tapering from 70% it is still higher from 70-80 SOC than the constant current would be in bulk at a lower charging rate where tapering starts at 80%, and that makes the accumulated AH more in that same time.
