Forum Discussion
landyacht318
Aug 07, 2018Explorer
Odyssey AGM proudly tout their thin plate pure lead batteries.
'Thin plate' and 'Deep cycle' are usually not associated together.
Northstar AGMs also advertise TPPL construction, and the battery specs for equal group size batteries are basically the same as Odyssey. AH CCA weight, almost identical.
I have been getting very good service from my group27 Northstar AGM. NS AGMS are relabelled and sold by Batteries + as X2power, and batteries plus adds another year to the free replacement 4 year warranty
My NS AGM-27 has over 800 deep cycles on it and at least a hundred of those are to well below 50% SOC and it will turn 5 years old in November. I'd gladly get another if it failed tomorrow, but it will not.
The trick it to fully charge it regularly, often, and high amp recharge it occassionally from a well depleted state.
Last week it easily started my 318 engine, depleted 72 of its advertised 90Ah capacity, and 97 alternator amps were not able to instantly bring it upto absorption voltage. 12 miles later it was still accepting 83 amps at 14.5v. At this many cycles the time it takes for amps to taper to 0.5% of capacity at 14.7v is quite long though. I'd not get this battery for deep cycling, unless I could high amp recharge it, and that opinion goes for any AGM.
I'd never buy or recommend Optima AGMs, but for starting batteries in jetskis or the like that are subjected to extreme physical stresses, although some that were purchased early 2000's that my friend owned, gave spectacular longevity despite some incredible mistreatment. They had developed a good reputation when they were USA made, and then cut all corners possible and cashed in on that reputation, and now count on marketing and remnants of that reputation.
I'm glad to hear the Vmaxtanks AGMS are performing well, but it would be nice to know how many cycles have accumulated since their purchase and their average depth of discharge.
So many people brag about how many years they get out of a battery, without indicating how many cycles the batteries have endured and the average depth of those cycles, which makes reports of that longevity pretty much useless to prospective buyers.
Seems many people search out and buy the cheapest they can then try as hard as they can to prove it is just as good as more expensive options, and I am not only talking batteries here.
'Thin plate' and 'Deep cycle' are usually not associated together.
Northstar AGMs also advertise TPPL construction, and the battery specs for equal group size batteries are basically the same as Odyssey. AH CCA weight, almost identical.
I have been getting very good service from my group27 Northstar AGM. NS AGMS are relabelled and sold by Batteries + as X2power, and batteries plus adds another year to the free replacement 4 year warranty
My NS AGM-27 has over 800 deep cycles on it and at least a hundred of those are to well below 50% SOC and it will turn 5 years old in November. I'd gladly get another if it failed tomorrow, but it will not.
The trick it to fully charge it regularly, often, and high amp recharge it occassionally from a well depleted state.
Last week it easily started my 318 engine, depleted 72 of its advertised 90Ah capacity, and 97 alternator amps were not able to instantly bring it upto absorption voltage. 12 miles later it was still accepting 83 amps at 14.5v. At this many cycles the time it takes for amps to taper to 0.5% of capacity at 14.7v is quite long though. I'd not get this battery for deep cycling, unless I could high amp recharge it, and that opinion goes for any AGM.
I'd never buy or recommend Optima AGMs, but for starting batteries in jetskis or the like that are subjected to extreme physical stresses, although some that were purchased early 2000's that my friend owned, gave spectacular longevity despite some incredible mistreatment. They had developed a good reputation when they were USA made, and then cut all corners possible and cashed in on that reputation, and now count on marketing and remnants of that reputation.
I'm glad to hear the Vmaxtanks AGMS are performing well, but it would be nice to know how many cycles have accumulated since their purchase and their average depth of discharge.
So many people brag about how many years they get out of a battery, without indicating how many cycles the batteries have endured and the average depth of those cycles, which makes reports of that longevity pretty much useless to prospective buyers.
Seems many people search out and buy the cheapest they can then try as hard as they can to prove it is just as good as more expensive options, and I am not only talking batteries here.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,208 PostsLatest Activity: Feb 25, 2025