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
Almot wrote:BFL13 wrote:
If the controller drops to Float voltage before you want it to, it is very frustrating trying to get it back to Bulk, since the batts have to get down to 13.2 (eg) which can take a long time.
Yes, it would have to go through Absorb again.
No, it won't take a long time if controller is smart enough to shorten the Abs stage accordingly to the current and/or voltage at the beginning of this "new" Abs stage. Those cost more than Grape though.BFL13 wrote:
If you can program Float to be near the same higher voltage as Bulk, then you are good all day.
Why keeping batteries all day at elevated voltages is good?
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Never thought elevated voltages (upto 14.8V Vabs) to be much of a problem as long as you watch the water in the batts.
Our MPPT can stay in Abs and over 14V for long periods when we're using much electricity during the day. Also it's easy to force into mppt mode, which I'll often do late in the day to get batteries as full as possible before night fall.
