RE: Reconditioning large batteries?
Yes if not to bad or old. Form... or reform... If you have a charger , discharger that can handle these then discharge slowly first few times at C/10 current rate to 0.9V per cell. Then recharge at same C/10 current rate for 16 Hrs. After a few times then you can discharge faster up to C but capacity rating is tested at C/5 typically. If after 6 cycles and below 80% capacity of battery then a Ben Franklin fix. aka money yea it will take a week to do but this is best way to tune up NiXX
Rich