Excellent YH, reliability always trumps convenience.

On your chargers for the Nimh over Nicd you can use the same wall chargers if they are of similar capacitys.

The problem is if the Nimh is a considerably higher capcity then it takes much longer to receive a full charge from that same wall charger. Now what can happen although not neccessairly a safety problem it can result in the Nimh not ever really getting a full charge and therefore not suppling the full rated capacity. For example if you fly everyday there may not be enough hours in the day to sufficiently recharge using the wallcharger intended for Nicd's.

A more capable charger that has adjustable currents for higher capacity packs is a good idea in this case.

John