Go here: http://www.batterystation.com/nicads.htm
, the batteries used to make the 1100 packs are actually the:
NT-100AFH GP 2/3A 17 26.7 NiMH Flat Top 1000mah $2.00
I went to my local battery place, he carries all kinds of batteries with an Orion pack, the guy told me that 2/3A NIMH's maximum is 1000MAH but that they actually store more than they are rated, so I tried it out by purchasing 5 cells from him (his price is $4.00 per cell) and built the pack, discharged it with a 2 amp bulb then charged it ....it took 1260MAH!!! , this compared to my Orion pack which takes 1150MAH.