No you don't need a special charger for NMmh. Depending on the capacity you may need a fast charger, otherwise it would take you a lot of time to charge.
???????????????????? What exactly is your question? If you are asking if Ni-Cd batteries are rechargeable, then the answer is yes, although you need be sure to have the appropriate charger for them, just as with NiMH batteries.
If its a NiMH battery then yes. The Energizer charger will charge ANY brand of NiMH rechargeable batteries.
Some will, but it is not recommended because it can damage the batteries or the charger. Invest in a NiCd charger or better yet get some NiMh batteries. NiMh batteries are better than NiCd in every way.
NiMH batteries will need an NiMh battery charger,no other type will work.
Rechargable NiMH batteries will have memory issues, but are so cheap it's often not an issue.
A NiCad charger has different sensor values than NiMh. I would find a charger that has a switch to select either, or specifically a Nickel Metal Hydride battery charger to prevent damaging and shortening the life of your batteries.
Unless you want to see batteries burst, you should never charge normal alkaline batteries with any charger. Brand names don't matter much in this sense either. Only charge batteries that have the word "Rechargeable" or "NiMH" on them. Though there are some alkaline batteries that are rechargeable, a regular battery faces the risk of explosion or severe damage when charged.
Packs,yep..
It is always better to use a charger designed to charge a particular battery type. Using a NiCad charger for NiMh batteries or vice versa can cause damage to the charger or batteries, especially if the charger is designed to charge the batteries in under two hours. The worst case is a fire risk. Some charger and battery combinations will work perfectly well together but it is safe to assume that the charger will only be suitable for the battery types stated on it.
The AX-Synth does not recharge the batteries. You have to get an external AA Ni-MH charger.
NiMH batteries are the longest lasting.You need to get a quick charger if you want to charge them quickly.That's more important than the batteries.
you can change the nicad batteries for nimh without any problems, the charging will take longer as the capacity of the nimh batteries will be much higher than the nicad batteries.