shallow cycling, deep-cycle batteries

[SunEagle]

Those are the kind of questions I like. Someone who is willing to do their own work and look things up.

The words you are looking for is FORMAT and PRIME. Start your search here.

And all I know is how to format a hard drive and prime a pump.

[Sunking]

Do any of you folks have information, or terms and keywords I could use to research?

Those are the kind of questions I like. Someone who is willing to do their own work and look things up.

The words you are looking for is FORMAT and PRIME. Start your search here.

[PNjunction]

Shallow cycling a deep-cycle battery results in uneven sulfation (the normal kind that happens when you discharge), leading to problems like hot spot clumps over time when you do decide to do a real discharge.

Usually an indicator that you bought too much battery, possibly in the hopes of turning a 4-5 year chemical life / cycle life into a magical 20 year telco battery with micro-discharges.

If you were to try this as an experiment, a deep-cycle would not be the way to go, and a starter-battery designed for shallower discharges might be an interesting experiment. Still, you have a chemical lifetime regardless of depth of discharge to deal with.

[Mike90250]

Perhaps if Sunking sees this, he can respond, I work with NiFe batteries and have not kept all the way up to date with Pb or Li batteries. Generally the Mfg's have the real data for their batteries and warranty requirements

[carilchasens]

The major battery mfgs have addressed this, and overall, it does slightly harm the battery, A single deep 50-60% discharged) cycle every couple months will help keep plate material active. Winter time, one or two would happen naturally, summer time, chose a time when good sun is forecast so the next day can recharge it all.

Mike, yeah, thanks,that is pretty much what I have so far from Rolls Surrette, and I will definitely take their advice. Still, I would love to find more info on the subject, and one or two terms to keyword would really help. Like, what is the chemical process, how severe is it at various high states of charge, what does a depth-of-discharge vs battery life curve look like between 10% and 0% discharge per cycle.

[Mike90250]

The major battery mfgs have addressed this, and overall, it does slightly harm the battery, A single deep 50-60% discharged) cycle every couple months will help keep plate material active. Winter time, one or two would happen naturally, summer time, chose a time when good sun is forecast so the next day can recharge it all.

[carilchasens]

I am trying to find out why and how the capacity of deep-cycle batteries can be harmed when they don't get cycled any deeper than 10%. Do any of you folks have information, or terms and keywords I could use to research?