Review on Microtivity IM333 Battery Box 3 Cell by Claudia Phipps

They are too expensive for what you get. The plastic is of very poor quality, there are defects in the shape, but it closes satisfactorily. The plastic is quite thick (probably due to poor quality) which suggests the sealed unit is quite durable. Unfortunately, the plastic clips that hold the positive battery contacts are too thick and the battery size tolerance is tight. This causes a poor electrical connection to all three positive battery posts. Therefore, any moderate vibration can cause a temporary or permanent loss of performance. This can be corrected somewhat with a piece of aluminum foil clamped between the contact points. However, this is not necessary given the price of the item.