Is there a risk of over charging the batteries and shortening their lifespan?
1341617
Not sure never paid any attention to that but I guess cause I haven't had any problems with my controllers so far.
1341618
Not at all! I keep my controls at charge all the time and I haven't noticed lifespan shortening.
1550116
I would err on the side of caution here. The battery tinder is a safe and well engineered tool but that being said I would want to check on it often. do a search on the hazards of charging batteries and you will be able to answer your own question.
26323
I'll add to the other responses. NO! Li-Ion batteries have a high explosion danger when you do that kind of thing.
1679842
Don't do it! The excess voltage would surely burn something out. (If they even fit.) There are numerous suitable "double A" batteries that will work, including many rechargeable ones.
905740
I do not know the answer to your question. All I can say is that I have not had any issues with overcharging or over discharging of these batteries. I have been using this type of batteries (5000mAH) for the last two years.
1570397
I disassembled an old unit that failed to charge after a year or so and removed the batteries. They would not charge with a "hobby" charger designed for electric RC cars and such. I then discovered that storing the unit in the charger when it is plugged in was overcharging the batteries. I have another unit about 4-5 years old that is still going strong. I charge the batteries overnight when they will no longer last a full brushing cycle. NiCad and NiMH batteries have a very limited life when charged to 100% capacity repeatedly.
1106476
It is always recommended to keep rechargeable batteries on charge when not in use. Otherwise you may find shorter battery life.
1043792
I'd say NO. The owner's manual states that you shouldn't do this, as it shortens the battery's lifespan. How much it shortens it, it doesn't say.
560541
I wouldn't be too concerned over battery life , haven't had any issue with mine and it gets used frequently . anyway if I remember correctly installing a battery was a breeze .
2004805
I don't expect to ever have to worry about the battery. These type of batteries last through thousands of charge cycles so if it fails in 10 years I will just buy a new one.
1986356
I don' know. I believe letting/not letting them discharge is NOT an issue with this type (they don't have the ghost charge problems other models do) . I recharge mine when they still have life left and haven't noticed a shortened lifespan, but haven't done a formal experiment.
1550491
You might also want to look at a Charge controller so you don't over charge your deep cycle batteries.
51069
We leave our batteries on the chargers all the time they are not is use. So far, there have been no significant detrimental effects.
1018654
Many chargers auto set to these batteries. If you have a charger from years/decades ago that does not automatically switch off I would watch very carefully. You could overcharge and short the battery.
1220389
Yes, You should put a charge controller in line to batteries, rated at the proper amps/watts so you don't overcharge batt.
813749
I am assuming not. It does take quite some time to charge batteries. That's not necessarily a bad thing though. If the batteries are charged too fast it can hurt their longevity and may not charge them to full capacity.
2061773
Batteries could be already charged or they are old and no longer holding a charge.