You might think about buying the battery tray, which holds six AA cells. Then fill it with Eneloop Nickle-metal-hydroxide?cells. Greater capacity; more recharge cycles over their life; holds charge much better when in storage, much cheaper in the long run. If you often need to replace batteries quickly, think about getting two trays.
I buy mine in combo packages (from Costco)--comes with a 4-cell charger, and typically 10 AA cells plus four AAA cells and, depending on the package, adapters for D and C cells as well. Two packs give you charging for all six cells in an FT-60 set at once (plus room for two other cells) plus three sets of six cells for the radio (and a couple of spares).? (Note that the online products at Costco don't necessarily match what's in a "brick and mortar" store and that the specific pack contents does change?from time to?time.)
Some hams on here have reported that the AA cells may come in two different capacities and the larger ones might not quite fit the FT-60 and battery tray. You might want to search the forum for those reports so you don't get the wrong ones. (I think someone may have even reported how to fix that problem, but I am not sure.)
Good luck and 73,
JERRY, N3AA
