Off-Road Ranger I
- 2,865
- First Name
- Donald
- Last Name
- Diehl
- Member #
-
0745
- Ham/GMRS Callsign
- WRPN 506
I haven’t been too scientific about this, I do know the battery has never been discharged below 12 volts which is 50% discharged. It has been used as a house battery in my dual battery set up. When parked at home I have a smart charger keeping both batteries topped off. My solar charger is dialed in for AGM charging. In short, I’ve been very proactive about the care and maintenance of my AGMs. The battery, a 27m is now 3-1/2 years old. Sitting without the smart charger hooked up it has discharged itself down to 12.03 volts, or 50% discharged in 3 days. Interestingly enough, it is about 7 months out of warranty. Meanwhile, the Odyssey AGM battery, used as a starter battery, is still chugging along holding steady at 12.5 volts after 3 days while still hooked up to the cruiser. I gave Optima a sincere benefit of doubt and was willing to use their product. Next up? I’m picking up a new Exide AGM 27m deep cycle marine battery with 100 amp hours. I’ll give a review of my thoughts after we return from the NWT this fall.