hi all... I received some 'new' batteries today that were prewired in series to be 36v 12ah and I also have a 36v 1.5a charger that turned from green to red when I plugged it in (like normal)
Within about 20 minutes, if I listen closely, I can here the batteries bubbling or fizzing.
Is this normal? My other battery pack has the sla's encased so I don't hear anything when charging. With these batts, I can hear it and so I have unplugged the charger until I hear back from someone who knows. Don't want to blow up or leak acid... eewwww.
Thanks for helping the noob!