Originally Posted by gulio
Charge them at 330 ma for 15 hrs with a charger that doesn't shut off. The rate and time doesn't have to be exact, but the product when multipling them together should equal 150% of capacity. (like 300 ma 16.5 hrs= 4950)
(or 400 ma x 12.375 hrs = 4950)
Battery will be full, balanced and ready for use. Use normally.
Batt restoration for long term storage I saw called for 16hrs at 0.1C charge, 1hr rest, 0.2C discharge, rest again and another 16hr 0.1C charge.