More Solar for "Us"
Ok, I went off.the deep end? Bought 3 used 37watt uni-solar panels and a blue sky 2000e controller for the hefty price of $400, They were being listed as 75w panels, they are not The tested open...
Forum Discussion
That's a fair question. All modern multi-stage converters have an algorithm to prevent boiling. They are designed to reach the max boost voltage and then go into absorption mode (at a lower voltage level).
Iota has the most aggressive boost routine. If the converter's output voltage reaches 14.6V is will go into absorption mode after an additional 15 min in boost. The goal is to get a fast charge, but minimize time spent above the gassing voltage.
The solar charge controller is a different animal. While a converter has the capability of charging at 50 A, charge controllers charge at a much slower rate. They'll remain in boost a lot longer time period.
That's why Blue Sky adjusted the setpoint to 14.0V. They want to avoid boiling batteries for prolonged periods of time. I get the feeling when Wiz raised the setpoint to 14.6V the controller never gets out of boost mode. The battery may be above the boiling voltage all day long, every day.
Here's what Blue Sky says about their constant voltage charge mode when set at 14.0V:
"The precision PWM voltage control method provided by Solar Boost 2000E prevents over charge while maintaining a more fully charged battery."
Sal
Iota has the most aggressive boost routine. If the converter's output voltage reaches 14.6V is will go into absorption mode after an additional 15 min in boost. The goal is to get a fast charge, but minimize time spent above the gassing voltage.
The solar charge controller is a different animal. While a converter has the capability of charging at 50 A, charge controllers charge at a much slower rate. They'll remain in boost a lot longer time period.
That's why Blue Sky adjusted the setpoint to 14.0V. They want to avoid boiling batteries for prolonged periods of time. I get the feeling when Wiz raised the setpoint to 14.6V the controller never gets out of boost mode. The battery may be above the boiling voltage all day long, every day.
Here's what Blue Sky says about their constant voltage charge mode when set at 14.0V:
"The precision PWM voltage control method provided by Solar Boost 2000E prevents over charge while maintaining a more fully charged battery."
Sal
mena661 wrote:
Salvo says that 14.6V "boils" batteries. I understand some bubbling is wanted but how can 14.6V "boil" a battery when it's the recommended charging voltage by well respected, prominent manufacturers? Sure, if you have manual charger and you left it running for a few days but that's not happening on a multistage charger which Mr.Wiz has. What am I missing?
