>> How do you recommend reconditioning a dead SLA battery? > > Wouldn't get your hopes up > > I've tried a variety of methods ** for rejuvenating SLA and wet > batteries, with poor results. Once the plates get to a certain > degradation it's difficult to get them to hold any sort of useful > charge. The best thing is to never let them get into a prolonged > state of discharge It is easier to see the decomposition of the lead plates in a normal water-based battery. It is no more the same chemistry structure. I can't bear to throw some good heavy ones away, though they can't perform as a 12V rated SLAB, they can still perform at 10V or 8V, and they are being using them to capture solar in the day, and charging my portable at night. Cheers, Ling SM --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .