aviator08 10+ year member
Senior VIP Member
oh ok my hc2000 I put to charge and it went up to 13.5 volts but un hooked it and slowly went back down to 10.
Interesting, the instructions that came with my charger specifically said to charge it for up to 20 minutes before using the desulfate mode. Should I not have charged the battery?can be sulfation, I have seen and worked with many different batteries resting as low as 4 volts and brought them back. Some do not come back at all. If you have a system that can pull more power than your alt puts out and you notice you have a low sitting battery chances are it is undercharged/sulfated. I don't have too great of luck with bringing back some batteries like spiral cells with the chargers but most others do eventually come back (may take a few cycles of charge discharge and recharge right after you ran it down some). You dont want to desulfate a charged battery and most chargers have to kick into it rather than being selectable. Charging up a dead or a low battery is also a form of desulphation as sulfation starts as soon as a battery is removed from a charge.. I use desulphation when the battery wont accept a charge. Look up the term you will see more hands on what it actually is and what causes it. It is one of the main reasons most all -if not all -battery companies do not cover undercharging situations as that is not a defect of the product but rather a deficiency of a proper charging system and or monitoring of the battery.
By charged I mean fully chargedInteresting, the instructions that came with my charger specifically said to charge it for up to 20 minutes before using the desulfate mode. Should I not have charged the battery?
The charger should be regulated for AGM batteries and not wanting to go much higher in resting voltage is what sulfation will actually do. It rips at a batteries capacity and ability to recharge.it was on a 5 amp charger for like an hour or 2
So The regeneration finished and then It took a couple hours for the charger til top off the battery to full. Voltage off the charger was a about 13.12v Measuring the battery this morning and it had dropped to 12.8v.The charger should be regulated for AGM batteries and not wanting to go much higher in resting voltage is what sulfation will actually do. It rips at a batteries capacity and ability to recharge.