This system works great as an optional premium system for the Spectra V3i, VX3, DFX, XLT, MXT, Matrix M6, Classic 5ID and Classic 4. Faster charge and longer usage time per charge. Charges completely in under 3 hours and then automatically switches to a trickle charge to protect the battery. This charging system can not be used without the NiMH stand. No part of the Spectra V3 recharge system can be mixed with any other White’s NiCad system components.