LMF5000
Mechanical
- Dec 31, 2013
- 88
Typical example:
The label states that the charging voltage is "14.6-14.8V". I have a computerized hobby charger (similar to the iCharger 206B) that does CC-CV charging where the voltage of the CV stage can be set to an accuracy of 0.01V per cell.
So, the question is, what's the best voltage setting, and why? Should I target the low end (14.6V) or the high end (14.8V)? I'm inclined to target the low end as I feel it would reduce positive plate corrosion and electrolyte loss.
What would happen if I use the conventional FLA voltage of 2.4V/cell (14.4V total) for this SLA?
Lastly, since it states a "maximum" current of 10.8A, is it a good idea to set the CC current to 10.8A... or would a lower current setting give longevity benefits? (The charger is not a limiting factor, it's rated for 20A. CC current can be set in 0.1A increments)
In short, I'd like some pointers from more experienced engineers to maximise the life and performance of SLAs within the limitations written by the manufacturer, since they provide a range rather than a fixed value.
P.S. If it makes any difference, the application will be occasional backup power. This battery will be stored open circuit, given a topping charge every few months, and only used occasionally for a long deep discharge, powering an inverter every time there's a power cut (couple of times a year).
The label states that the charging voltage is "14.6-14.8V". I have a computerized hobby charger (similar to the iCharger 206B) that does CC-CV charging where the voltage of the CV stage can be set to an accuracy of 0.01V per cell.
So, the question is, what's the best voltage setting, and why? Should I target the low end (14.6V) or the high end (14.8V)? I'm inclined to target the low end as I feel it would reduce positive plate corrosion and electrolyte loss.
What would happen if I use the conventional FLA voltage of 2.4V/cell (14.4V total) for this SLA?
Lastly, since it states a "maximum" current of 10.8A, is it a good idea to set the CC current to 10.8A... or would a lower current setting give longevity benefits? (The charger is not a limiting factor, it's rated for 20A. CC current can be set in 0.1A increments)
In short, I'd like some pointers from more experienced engineers to maximise the life and performance of SLAs within the limitations written by the manufacturer, since they provide a range rather than a fixed value.
P.S. If it makes any difference, the application will be occasional backup power. This battery will be stored open circuit, given a topping charge every few months, and only used occasionally for a long deep discharge, powering an inverter every time there's a power cut (couple of times a year).
