Another AGM conditioning question
This is my chassis battery, an agm I got used and have little experience with. Trickle charger failed in storage, it is dead as a doornail. Not covenient to babysit it for long hours on meanwell or...
Forum Discussion
Good morning campers:)!!!! Another glorious day to study and learn about batteries.
I did get to Home Depot and as of 3:00PM yesterday, the now dedicated to the coach Kill-A-Watt is doing it's measurements to see what the Samsung Fridge consumes in a 24 hour period. This is more to eliminate the possibility that it's behaving like a few other RV'er's who have PM'd me about theirs never going out of Defrost mode. A control board need to be replaced, and not fault code reported by the Samsung. Most were the RF197 first generation of the 18' Samsung popular in RV's, ours is the RF18 which I've not been able to confirm has had this problem. The 24 hour measurements should give me the info to compare from when I first installed. Then I was seeing over 4 days of monitoring, 14x - 17x AH's usage over a 24 hour period. (Two days were hotter and more humid then the other 2.) So for overnight planning, I use potential 90AH's just to feed the Samsung.
I have the power off at the pole now, going to drop some AH's out of the L16 bank. I've reset the Magnum's Absorb to a 3 1/2 our cycle. I want to see what Absorb reports on Amps during it's cycle. (I got an email from a boating gent, who said he swears the Magnum Absorb and Equalize - even set to the same 14.4V as I have done here - report Amps differently. So, get the bank down a hunk or two, and turn back on shore power and see what a longer Absorb cycle reflects.
And MW, as far as Recovery. I've stated on a few threads that when back off of this road trip, I'll work with Lifeline and follow their recommendations. (I did send a request into their Contact Us 4-5 days ago now, and have heard nothing back. So I'll call Tech Support when I'm back at the Sticks & Bricks.). Reading Recovery section of the Tech Manual, those semi resting voltages I recorded back on page 9 of this thread - are not near the levels they talk about as deep discharge. If they want me to take them to a Pro for Recovery, I will. But I want to take them to a place they recommend. (I'd even drive them the two hours to their warehouse if they want:)!).
And a reminder, I'm using 'time' for Absorb now, vs the 100% SOC to end Absorb that I'd had set. (Again, after talking with Lifeline Tech Support when setting the Magnum up. Theoretically, the Ending Amps on the MidNite Classic 150 and WhzBngJr (4 Amps - is where I have the Ending Amp's set for the 800AH bank.) 'should' have been getting me back to full charge(?). (Once the Controller senses Amps tapering to 4 Amps, they terminate the Absorb run. I set this, due to concern of cooking the batteries too much.)
Drink some more coffee, discharge the battery bank some, turn it back on and monitor the Amps while on a 3 1/2 hour absorb. If it too does not drop below 13Amps - well, we'll wait and see. And by 3:00PM today, I'll know what the Samsung is doing - in case it is sick and eating up AH's more then it should.
Best to all,
Smitty
I did get to Home Depot and as of 3:00PM yesterday, the now dedicated to the coach Kill-A-Watt is doing it's measurements to see what the Samsung Fridge consumes in a 24 hour period. This is more to eliminate the possibility that it's behaving like a few other RV'er's who have PM'd me about theirs never going out of Defrost mode. A control board need to be replaced, and not fault code reported by the Samsung. Most were the RF197 first generation of the 18' Samsung popular in RV's, ours is the RF18 which I've not been able to confirm has had this problem. The 24 hour measurements should give me the info to compare from when I first installed. Then I was seeing over 4 days of monitoring, 14x - 17x AH's usage over a 24 hour period. (Two days were hotter and more humid then the other 2.) So for overnight planning, I use potential 90AH's just to feed the Samsung.
I have the power off at the pole now, going to drop some AH's out of the L16 bank. I've reset the Magnum's Absorb to a 3 1/2 our cycle. I want to see what Absorb reports on Amps during it's cycle. (I got an email from a boating gent, who said he swears the Magnum Absorb and Equalize - even set to the same 14.4V as I have done here - report Amps differently. So, get the bank down a hunk or two, and turn back on shore power and see what a longer Absorb cycle reflects.
And MW, as far as Recovery. I've stated on a few threads that when back off of this road trip, I'll work with Lifeline and follow their recommendations. (I did send a request into their Contact Us 4-5 days ago now, and have heard nothing back. So I'll call Tech Support when I'm back at the Sticks & Bricks.). Reading Recovery section of the Tech Manual, those semi resting voltages I recorded back on page 9 of this thread - are not near the levels they talk about as deep discharge. If they want me to take them to a Pro for Recovery, I will. But I want to take them to a place they recommend. (I'd even drive them the two hours to their warehouse if they want:)!).
And a reminder, I'm using 'time' for Absorb now, vs the 100% SOC to end Absorb that I'd had set. (Again, after talking with Lifeline Tech Support when setting the Magnum up. Theoretically, the Ending Amps on the MidNite Classic 150 and WhzBngJr (4 Amps - is where I have the Ending Amp's set for the 800AH bank.) 'should' have been getting me back to full charge(?). (Once the Controller senses Amps tapering to 4 Amps, they terminate the Absorb run. I set this, due to concern of cooking the batteries too much.)
Drink some more coffee, discharge the battery bank some, turn it back on and monitor the Amps while on a 3 1/2 hour absorb. If it too does not drop below 13Amps - well, we'll wait and see. And by 3:00PM today, I'll know what the Samsung is doing - in case it is sick and eating up AH's more then it should.
Best to all,
Smitty
