WM EverStart 27DC
I own an 18 month old WM EverStart 27DC battery. The label states, "Manufactured by Johnson Controls". I am looking for the 3-stage charging values for a WM 27DC. I have looked in the WM website and ...
Forum Discussion
Why doesn't the WM / JCI website provide the proper 3-stage recharge values for their Deep Cycle batteries, like US Battery and most other manufacturers do?
I see that you recommend 60 percent SOC remaining. I use about 30 Amp-Hours each night. That is perfect, because that means I am using about 40 percent of the 90 Amp-Hours C/20 rating. I have never used 50 percent. So far, the battery has been functioning perfectly for 18 months.
The RRC, Repetitive Reserve Capacity, rating is only 65 CYCLES! But I already have 100 CYCLES @ 40 percent DOD, in just 18 months. My goal is to get, at least 200+ cycles over a 3 - 4 year period.
The only information on my 27DC battery is: "109 AH @ 1 Amp".
Yesterday, at WM, I saw: "80 AH at 20 Amps" on the new 27DC batteries!
If true, then the C 20Hr rating of my WM 27DC is somewhere, in between those two values?
Maybe, 90AH @ 4.5 Amps C 20Hr rated battery?
_ 109 AH @ 1.0 Amps = C 109Hr (old label)
__ 90 AH @ 4.5 Amps = C 20Hr ???
__ 80 AH @ 20. Amps = C 4Hr (new label)
RE: ABSORB VOLTAGE ...
At 80 Degrees, the Absorb Voltage is 14.4 volts
At 70 Degrees, the Absorb Voltage is 14.5 Volts
Yes, I can increase the Absorb Voltage.
What Absorb Voltage do you recommend?
How many 40% DOD /60% SOC Cycles do you think I will get?
I see that you recommend 60 percent SOC remaining. I use about 30 Amp-Hours each night. That is perfect, because that means I am using about 40 percent of the 90 Amp-Hours C/20 rating. I have never used 50 percent. So far, the battery has been functioning perfectly for 18 months.
The RRC, Repetitive Reserve Capacity, rating is only 65 CYCLES! But I already have 100 CYCLES @ 40 percent DOD, in just 18 months. My goal is to get, at least 200+ cycles over a 3 - 4 year period.
The only information on my 27DC battery is: "109 AH @ 1 Amp".
Yesterday, at WM, I saw: "80 AH at 20 Amps" on the new 27DC batteries!
If true, then the C 20Hr rating of my WM 27DC is somewhere, in between those two values?
Maybe, 90AH @ 4.5 Amps C 20Hr rated battery?
_ 109 AH @ 1.0 Amps = C 109Hr (old label)
__ 90 AH @ 4.5 Amps = C 20Hr ???
__ 80 AH @ 20. Amps = C 4Hr (new label)
RE: ABSORB VOLTAGE ...
At 80 Degrees, the Absorb Voltage is 14.4 volts
At 70 Degrees, the Absorb Voltage is 14.5 Volts
Yes, I can increase the Absorb Voltage.
What Absorb Voltage do you recommend?
How many 40% DOD /60% SOC Cycles do you think I will get?
