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Normally the title is an Oxymoron as AGM are not what IEEE, IEC, DIN, or BCI would call a True Deep Cycle Battery. I have been reading 3rd party test results, claims, reviews for a few years on a product line of a trusted USA battery manufacture. Finally got my paws on a set and ran some test on an analyzer and got some very good results. Wish they were mine, but they are a friend of mine down here in Panama. He bought a set of Trojan Reliant AGM T-105 batteries. He has a set of 8 for his golf cart.
As of now Trojan only offers them today as AGM T-105 and L16-AGM. Time will tell but it looks promising these are a solid 5 year AGM battery, about twice of any other high end AGM. Only real competitor would be Concorde at much higher price points.
Now what got my attention about them is the Internal Resistance. That may not mean much to most of you but it tells you how they perform under heavy loads and charging. Example the AGM T-105 is 1.9 milli-ohms. What that means is this battery can deliver 160 Amps of current with only 5% voltage drop. That is a full 1C discharge meaning 160 amps for 1 hour. Put that in your golf cart and you have some serious acceleration matching that of LiFeP04 cells of comparable capacity. Although they do not spec CCA or CA one can calculate what it would be or at least CA = 3.6 volts / .0019 Ohms = 1890 Amps CA. The AGM L16 is equally impressive with .0016 Ohms. .
Now while the Trojan may not have the lowest Internal Resistance of AGM's on the market because they are not, they are the only True AGM Deep Cycle Battery out there on the market with a claimed cycle life of 1500 cycles to 50% DOD. What this means to the RE user is they would be an excellent choice for areas with low winter Sun Hours where very high charge rates must be used, or 12 volt applications where very large Inverters can be used like an RV. Example it is possible you could run as high as 1500 watts on a pair of AGM T-105 vs 500 watts in the FLA T-105's version.
Anyway just thought you might want to know what the best out there is. It rivals Concorde PVX AGM's at 1/2 the price.
As of now Trojan only offers them today as AGM T-105 and L16-AGM. Time will tell but it looks promising these are a solid 5 year AGM battery, about twice of any other high end AGM. Only real competitor would be Concorde at much higher price points.
Now what got my attention about them is the Internal Resistance. That may not mean much to most of you but it tells you how they perform under heavy loads and charging. Example the AGM T-105 is 1.9 milli-ohms. What that means is this battery can deliver 160 Amps of current with only 5% voltage drop. That is a full 1C discharge meaning 160 amps for 1 hour. Put that in your golf cart and you have some serious acceleration matching that of LiFeP04 cells of comparable capacity. Although they do not spec CCA or CA one can calculate what it would be or at least CA = 3.6 volts / .0019 Ohms = 1890 Amps CA. The AGM L16 is equally impressive with .0016 Ohms. .
Now while the Trojan may not have the lowest Internal Resistance of AGM's on the market because they are not, they are the only True AGM Deep Cycle Battery out there on the market with a claimed cycle life of 1500 cycles to 50% DOD. What this means to the RE user is they would be an excellent choice for areas with low winter Sun Hours where very high charge rates must be used, or 12 volt applications where very large Inverters can be used like an RV. Example it is possible you could run as high as 1500 watts on a pair of AGM T-105 vs 500 watts in the FLA T-105's version.
Anyway just thought you might want to know what the best out there is. It rivals Concorde PVX AGM's at 1/2 the price.
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