Hey All, Measured White's TDI SL factory battery packs and discovered the following differences.
NiMh Battery - HD #802-5321, 2200 mAh.
After full a charge, one day later..........................................10.99 VDC
AA Battery Holder - #802-7150, 8 cell.
With Nuon Industrial Alkaline from White's Factory............12.94 VDC
With Member's Mark Alkaline from Sam's Club...................12.96 VDC
With Energizer Ultimate Lithium...........................................14.46 VDC
Was very surprised that with Alkaline batteries, the tested voltage was higher than with the NiMh battery pack.
Also, the NiMh battery pack seems to drop about 0.05 VDC a day.
But the clear winner are the Energizer Ultimate Lithium batteries at 14.46 VDC!
Stay Safe!