Iíve had bad luck with rechargeable batteries in the past. They self discharged if removing them from the charger after being charged, and they got ruined if left in the charger after being fully charged.
Has that changed in recent years? Are you using rechargeable button batteries?
There are so many types of batteries out there that it's impossible to say. I bought a bunch of rechargeable alkaline (AA and AAA) batteries 15 or 20 years ago, and found that the only thing they were really good for was a flashlight you didn't use much. NiCd usually bleed dead in a month off the charger and go bad quickly if they're left on it. Most of the early NiCd chargers were just constant voltage supplies. NiMh had the "memory" issue if you didn't drain them completely and recharge them fully, and still wouldn't hold a charge well unused for more than a couple months. A maintainer charger just wouldn't work or it would set a memory of 10% of a full charge (I had an Makita NiMh drill that did that). Li-Ion is definitely the way to go if you need rechargables, but they're either lower than standard voltage for standard D thru AAA sizes or higher for button cells, and a lot of electronics don't like their voltages upset. You also have to weigh the troubles of changing batteries and the significantly higher cost if you use rechargeable button cells, and they won't last 5-10 years on a charge like lithium cells do in a low-use device.