PD9245 and Lifeline GPL-31XT testing
I just acquired a Progressive Dynamics PD9245 converter to specifically charge a New Lifeline AGM GPL-31Xt at 125AH capacity. I tested the converter tonight on a different battery, and saw Voltages...
Forum Discussion
Paste formulations are SOLELY meaning ONLY for durability. One time I telephoned the head of the BCI and told him that my opinion favored using .3% that's point three percent, depleted uranium as an additive for plate paste.
Different amounts of antimony absolutely affects all voltage plateaus. So does calcium. But you are not going to find one whit of difference in the chemistries of mass produced flooded lead acid batteries. I already harped about BCI's full court press to STANDARDIZE lead alloys for recyclability.
But EXPENSIVE or GARBAGE plate paste is going to have EXACTLY IDENTICAL properties if the lead antimony ratio remains the same. IT'S THE DURABILITY AND LIFESPAN of the plate that is affected. Yes there are hybrid flooded batteries.
BUT ALL MEANING EVERY LAST AGM battery must have pure Pb pos plates. The tin and silver they throw in affects the stability of the cured paste. BUT THERE IS NO ANTIMONY in an AGM battery. None that are out there use anything but a lead calcium negative plate.
Electrolyte saturating the separators is 1.300 baume. PERIOD. The chemistry is THE SAME. Plates can be made thicker or thinner, paste can be applied thicker to thicker grids, but how the accumulator functions is the same. Lifeline places the plates closer together because they are manufactured mil-spec tolerances using lasers to actively position the plate closer to the pasting machine. Closer fit means lower impedance meaning more CCA amps meaning higher charge receptivity.
As long as the pure lead, 1.300 SG parameters match, the electrochemical reactions of the battery will be THE SAME. To argue against this is to argue against chemistry constants. If you titrate 3.70 sulfuric acid using phenolphthalein indicator and caustic soda as the neutralizer, the same amount of soda and acid will yield EXACTLY the same weight in resultant salts.
Pure lead is weak. It loves to have a binder but calcium is a poor choice. Antimony is out of the question in a VRB. A slight about of silver as a grain enhancer is a viable option but we all know what the value of silver is, and the percentage is so miniscule it does not affect impedance AT ALL.
A dense, perfectly mixed paste applied with microscopic precision is one key ingredient. Thick grids and thick application of paste another. PLATE ALIGNMENT is insanely important. So is the mat material. Superb quality matting costs FIVE TIMES as much as regular quality. The mats have to be exquisitely uniform in shape, thickness, and density. Then the assembly must be enveloped. And it ALL has to be absolutely, superbly accurately dimensioned. To less than a thousandth of an inch.
AGM batteries DEMAND virgin lead. As pure as it gets, then a tiny amount of grain enhancers are added when the lead is in the crucible.
I joke about paste being the family jewels but I blame myself here. I should have been more clear about this from the start. Battery manufacturers are PARANOID AS HELL about their particular paste formulation. It's an inside joke. In reality, the manufacturer HIGHLY prefers a high plate per cell count meaning thinner plates but high CCA or amp hour bragging rights. And a surplus covers sloppy manufacturing quality control.
But to say charging voltages must differ is to argue that a 12" bowling ball dropped off a 10 story building will beat an 11" ball to the ground. The chemistry is too similar and the primary design parameters of an absorbed glass mat battery CAN NOT vary to the point of affecting absorbsion or float charge values more than an insignificant amount.
If you insist on a formula for determining the inherent quality of an AGM battery. Not in ordinal.
WEIGHT
NUMBER OF PLATES PER CELL
THICKNESS OF CURED PLATES (automatically determines grid thickness)
IMPEDANCE which determines charge receptivity. This is a huge factor
MAINTAINING the plates in pristine condition, relies overwhelmingly on not keeping the battery undercharged for prolonged periods. It's a guess of mine that heavy charging amperage encourages circulation of the electrolyte in the glass mats.
A superior AGM battery offers duration and durability. A superior AGM battery has all of the good points mentioned above with extreme precision making a difference.
LATE NOTE - Going off-line until mid Monday. Such is life down here.
Different amounts of antimony absolutely affects all voltage plateaus. So does calcium. But you are not going to find one whit of difference in the chemistries of mass produced flooded lead acid batteries. I already harped about BCI's full court press to STANDARDIZE lead alloys for recyclability.
But EXPENSIVE or GARBAGE plate paste is going to have EXACTLY IDENTICAL properties if the lead antimony ratio remains the same. IT'S THE DURABILITY AND LIFESPAN of the plate that is affected. Yes there are hybrid flooded batteries.
BUT ALL MEANING EVERY LAST AGM battery must have pure Pb pos plates. The tin and silver they throw in affects the stability of the cured paste. BUT THERE IS NO ANTIMONY in an AGM battery. None that are out there use anything but a lead calcium negative plate.
Electrolyte saturating the separators is 1.300 baume. PERIOD. The chemistry is THE SAME. Plates can be made thicker or thinner, paste can be applied thicker to thicker grids, but how the accumulator functions is the same. Lifeline places the plates closer together because they are manufactured mil-spec tolerances using lasers to actively position the plate closer to the pasting machine. Closer fit means lower impedance meaning more CCA amps meaning higher charge receptivity.
As long as the pure lead, 1.300 SG parameters match, the electrochemical reactions of the battery will be THE SAME. To argue against this is to argue against chemistry constants. If you titrate 3.70 sulfuric acid using phenolphthalein indicator and caustic soda as the neutralizer, the same amount of soda and acid will yield EXACTLY the same weight in resultant salts.
Pure lead is weak. It loves to have a binder but calcium is a poor choice. Antimony is out of the question in a VRB. A slight about of silver as a grain enhancer is a viable option but we all know what the value of silver is, and the percentage is so miniscule it does not affect impedance AT ALL.
A dense, perfectly mixed paste applied with microscopic precision is one key ingredient. Thick grids and thick application of paste another. PLATE ALIGNMENT is insanely important. So is the mat material. Superb quality matting costs FIVE TIMES as much as regular quality. The mats have to be exquisitely uniform in shape, thickness, and density. Then the assembly must be enveloped. And it ALL has to be absolutely, superbly accurately dimensioned. To less than a thousandth of an inch.
AGM batteries DEMAND virgin lead. As pure as it gets, then a tiny amount of grain enhancers are added when the lead is in the crucible.
I joke about paste being the family jewels but I blame myself here. I should have been more clear about this from the start. Battery manufacturers are PARANOID AS HELL about their particular paste formulation. It's an inside joke. In reality, the manufacturer HIGHLY prefers a high plate per cell count meaning thinner plates but high CCA or amp hour bragging rights. And a surplus covers sloppy manufacturing quality control.
But to say charging voltages must differ is to argue that a 12" bowling ball dropped off a 10 story building will beat an 11" ball to the ground. The chemistry is too similar and the primary design parameters of an absorbed glass mat battery CAN NOT vary to the point of affecting absorbsion or float charge values more than an insignificant amount.
If you insist on a formula for determining the inherent quality of an AGM battery. Not in ordinal.
WEIGHT
NUMBER OF PLATES PER CELL
THICKNESS OF CURED PLATES (automatically determines grid thickness)
IMPEDANCE which determines charge receptivity. This is a huge factor
MAINTAINING the plates in pristine condition, relies overwhelmingly on not keeping the battery undercharged for prolonged periods. It's a guess of mine that heavy charging amperage encourages circulation of the electrolyte in the glass mats.
A superior AGM battery offers duration and durability. A superior AGM battery has all of the good points mentioned above with extreme precision making a difference.
LATE NOTE - Going off-line until mid Monday. Such is life down here.
