Understanding length of time for absorption & finish charge
Im referencing the Trojan guide for charging flooded batteries. They are a mix of old 8v Trojans and newer 8v Generic Brand. I have the charger set for 2.45v per cell. (i didnt temp compensate, weather app says its 65F right now)
Trojan says to do a maximum of 4 hours absorption. At that time im still not dropping to the 1-3% finish charge range.
I can tell the charger to drop to a constant current charge. Which i just did its at 2a for a 170ah battery. My question is how long do i leave it on the constant current finish?
Ive read the Trojan guide over and over and all im seeing is " The finish phase ends when the battery is fully charged." How long is that?
My charger does have a setting on what % to stop the charge at. I will have to check what its set to. I messed with it a couple months ago. Lets say i set it to 3%. That means when the charger hits the 3% finish charge the length of time would be zero. But that could be well passed the 4 hour absorption charge.
Does a smart charger for flooded batteries have a time setting that automatically switches to a finish current? I would like like to use my charger to mimic what the smart chargers do. I dont have to wait for the 4 hour maximum absorption time to drop the voltage.
I also dont have to follow Trojan 100%. When i ask advice before there were other brands people linked. I bookmarked their instructions but have not looked recently.
Oh...i do have a tool to measure specific gravity. I dont think i want to dip it in these old batteries. I try to keep the tool all nice. Its only been used on my brand new 6v. I suppose the answer to my question is going to be that i cant use time. You have to use SG. Geez great.
What about an educated guess on timing? New batteries versus older batteries. I swear some of these have to be 10-15 years old now.
Trojan says to do a maximum of 4 hours absorption. At that time im still not dropping to the 1-3% finish charge range.
I can tell the charger to drop to a constant current charge. Which i just did its at 2a for a 170ah battery. My question is how long do i leave it on the constant current finish?
Ive read the Trojan guide over and over and all im seeing is " The finish phase ends when the battery is fully charged." How long is that?
My charger does have a setting on what % to stop the charge at. I will have to check what its set to. I messed with it a couple months ago. Lets say i set it to 3%. That means when the charger hits the 3% finish charge the length of time would be zero. But that could be well passed the 4 hour absorption charge.
Does a smart charger for flooded batteries have a time setting that automatically switches to a finish current? I would like like to use my charger to mimic what the smart chargers do. I dont have to wait for the 4 hour maximum absorption time to drop the voltage.
I also dont have to follow Trojan 100%. When i ask advice before there were other brands people linked. I bookmarked their instructions but have not looked recently.
Oh...i do have a tool to measure specific gravity. I dont think i want to dip it in these old batteries. I try to keep the tool all nice. Its only been used on my brand new 6v. I suppose the answer to my question is going to be that i cant use time. You have to use SG. Geez great.
What about an educated guess on timing? New batteries versus older batteries. I swear some of these have to be 10-15 years old now.
