The Memory Protection Dev. BH501 Battery Holder is a compact and efficient solution for securely housing 1 cell in a sturdy PBT polyester tube. Designed with memory protection in mind, this battery holder ensures optimal safety and durability for your electronic devices. Its compact size and easy installation make it a convenient choice for various applications. The BH501 Battery Holder is a reliable and efficient solution for maintaining battery integrity and protecting your valuable electronic equipment.