I bought some AAs for a similar use. Besides the radio frequency interference ( I never tried them), the self discharge was my main concern. Some of my sensors are in hard to get to places and have 4 tiny screws that need to be removed to change cells. I found this from Xtar:
"When the cells are stored in the fully-charged state, the self-discharge rate typically remains below 5% per month. If the internal cells are stored with the voltage below 3.6V, (no way to check this) the self-discharge rate is less than 3% per month. You can rest assured that these 1.5V Li-ion batteries won’t get over-discharged within one year of your purchase. … Besides, please remember to charge these batteries at every 6 month during long-time storage."
That is just too high if one wants to try to power a device for a year. Or probably for even 6 months. They are closer to what the old NICD and non-LSD NiMH cells behave. Charge them up and use them immediately. Recharge as needed. Probably just fine for many applications, but not remote sensors where you want cells to last for months or a year… IMHO.