I don’t know what that means, but it has definitely grown progressively more so over the life of the batteries. …where there’s junk floating on top of the electrolyte and what looks like goo on top of the cells under the surface of the liquid. There’s no sign that things are coming apart inside the cells. It’s easy to find them exposing the tops of their plates with just a very little neglect. The Interstates definitely outgas more than the Trojans, using more distilled water. I check electrolyte levels at least once per month, more usually twice since it’s so convenient. There are signs, though, that the Trojans might give you more quality for the money. In terms of my actual experience with the two battery brands, there’s not a lot to choose between them – I’ve been perfectly happy with both. This battery bank being almost twice as big as the Interstate bank, the daily discharge cycle has been much less extreme: Typical morning voltage even near the winter solstice is 12.6v. For the past seven or eight months they’ve powered the Lair’s inverter and I have no complaints. But they accepted reconditioning with my BatteryMinder, and have worked fine since I installed them in March. They were discharged at the time and probably had been for some time, so I assumed they were scrap and originally took them just to be polite. I got these in December of last year from some neighbors who just wanted them gone.
Before then they saw almost daily 25%-40% discharge cycles.Īnd I have 4 225 amp/hour Trojans, whose age I don’t know but I believe they’re at least a year older than the Interstates. Currently they’re only running the Lair’s 12v lighting, so they’ve been lightly used all this year. I have two 232 amp/hour Interstates that will turn 4 years old in January, which puts them near the end of their predicted service life though they’re working fine and might last another 2-3 years without deterioration – or might not. That in turn got me to thinking about the relative quality of the two sorts of battery I’m currently running. It’s a beautiful day in a string of beautiful days, certain not to last, and I thought I’d better duck into the powershed and give my batteries a bit of maintenance while I can be outside and still feel my fingers.
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