Benefits

• A battery pack allows the power source of a device to be switched in and out easily. They are also simple to repair. LiPo battery packs, or a lithium ion polymer battery pack, possess the strongest power-to-weight ratio among all other batteries and are commonly used to power laptop computers.
  
  

Rechargeable Battery Packs

• Battery packs that are rechargeable can save a consumer's time and money. They are often equipped with a temperature sensor which enables the charger to detect when the battery is finished charging.
  
  

Fun Fact

• According to hooked-on-rc-airplanes.com, LiPo battery packs are enabling electric RC airplanes to compete with gas powered airplanes of similar size due to it's extending flight times and increasing power. A LiPo battery pack have high density in comparison to conventional battery packs because of the fact that the cells are not contained in cylindrical containers with spaces in between them.
  
  

Considerations

• When dealing with a battery pack, balance of the electrical circuit is often taken into account. Battery regulators must keep the high voltage of each battery below the maximum sum to maintain balance and enable weaker batteries to be charged. Maintaining balance gives a battery pack a longer life span.
  
  

Safety

• Keep battery packs away from children and take extra caution when handling them. Battery packs and cells contain potentially hazardous chemicals. They also can be a fire hazard and pose as an electrical threat, especially near water.