IGNORE THE AUTOMATIC FEATURE or superglue the slider switch to the "Start" position which will limit the charging to full manual mode. This charger is no good for automatic charging. It is perfect for manual charging. This is a far cry from a charger that costs three times as much and does nothing well.
This charger is and was recommended for a specific use here. The use and how to use it was spelled out in detail yet some people sea-lawyer an argument, their opinion, into the thread that has absolutely nothing to do with the tome of the thread.
I had to wrestle with PhD eggheads at Lockheed Skunk Works back in the nineties over automatic battery charging technique. They tried their best to come up with software algorithms that would maintain a 12,000 amp hour flooded battery bank. It cost them a lot of money. I would not let the corporation I was representing take responsibility for the horrendous degradation in battery cycle life and performance that the engineers caused. I know of no computer or software program that can integrate with chemistry and produce a totally-hands off battery management system for lead acid batteries. You need to determine actual charge status with a hydrometer...
Set the bulk voltage value.
Set the time at bulk voltage
Set the float voltage
And then compensate for electrolyte temperature.
Determine at what point (adjustable) the charger reverts from float to bulk charging.
Set a CONSTANT CURRENT value with time limitation for equalization.
Initiate a electrolyte stirring event every 15 days which may or may not agree with charging values as set forth in the equalization regimen, No software or sensor that I am aware of can sense bubbling electrolyte.
I spent five hours in Burbank, and when I left most of the engineers thanked me for the time I spent clarifying battery charge maintenance techniques. The few that did not were the ones that tried via personality and ego to railroad the system into accepting their version of reality. just for the record I got along very well with other battery engineers.
But please heed the fact that this discussion involves standard battery charging techniques and the equipment to get the job done with a minimum of time, hassle and money.
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