Safe cutoff point for lead acid batteries

[sunshine_eggo]

You're under-charging and your batteries amp hour rating is extremely optimistic and you're grossly under-cycling the batteries.

Charge to 15.2 for around 2 hours and cycle down to at least 11.9 volts. Lower if under moderate to heavy load.

Where are you getting 15.2? Even my Rolls only want 15, which is the highest I've ever seen.

I would hesitate to push lower quality batteries to higher voltages.

 

[Checkthisout]

Where are you getting 15.2? Even my Rolls only want 15, which is the highest I've ever seen.

I would hesitate to push lower quality batteries to higher voltages.

Calculating Proper Charge Settings for Rolls Flooded Lead-Acid Batteries

This article will provide detailed instructions relating to proper charging and system programming for Rolls flooded lead-acid batteries. For additional information, please refer to Rolls Battery User Manual. Improper charge settings and fai...

support.rollsbattery.com

For regular cycling, temp compensated.

I don't find this causing much gassing.

I by no means am a battery expert but I personally think its better to go a little over voltage everyday rather than undercharge and boil the batteries once a month to equalize. It seems to work on my cheapo batteries so far.

On a side note, I noticed my outboard boat engine outputs about 15.2-15.4 volts.