I pick up a new battery yesterday. Different brand name but essentially the same specs. I had a salesperson check the voltage before I made the purchase. It read about 12.84V or 12.86V.
At home I hooked it up to my charger. I charged it at 0.5 amps with a peak setting of 5mV. It charged for less than 5 minutes, then the charger beeped signifying a peak charge. I checked the voltage. 12.96V. That link to the battery site states a full charge at 13.00V.
Just to make sure it wasnt a false peak, I tried to charge it again at 0.5 amps. Within a few seconds the amp output would gradually fall 0.5, 0.46, 0.31... until it reached zero. I stopped the charge immediately, and repeated the process once more with the same results.
One thing that confuses me is during those last 2 attemepts of trying to charge the NEW battery, the charger displayed the same readings as when I was trying to charge the old battery.
1. The charger's work capacity read 100.
2. The Amp output would start at the set rate, then gradually fall to zero output within a few seconds.
So my understanding is:
1.The charger didnt want to charge the OLD battery cuz it was beyond revival.
2.The charger didnt want to charge the NEW battery cuz its already fully charged. I installed the battery into the starterbox already... its works, but I havent tested the capacity yet... going to be breaking in a new .21 engine sometime this week.
3. My charger could be malfunctioning. Bad timing as I know its past warranty.
4. My charger doesnt like to charge lead-acid batteries anymore...dont know why... it used to in the past... it could be possessed. It clearly states on the box and in the instruction manual that this charger will charge LEAD-ACID batteries... was the reason I bought this charger in the first place.
Yep, I been away for a good year. the old battery was left to sit that long.
SO I can charge the old battery using a real car-battery charger.
It wont blow up?
Long post... to much coffee this morn.