The Spectrum LiPo Battery Monitor is one of the first Lithium Polymer (LiPo) battery monitor that take up to 7 LIPo cell batteries. It uses a unique ultra bright super flux wide angle LED that gives an advanced 6 level battery strength indication through its color spectrum. LiPo batteries are unlike other batteries and discharges on a non-linear curve, therefore it is important not to drain any LiPo batteries to minimum before charging as it can cause permanent damage. The Spectrum can prevent this by giving you an early indication of your LiPo battery strength. It is designed with the leading edge micro-controller technology that gives precise accurate voltage level detection. It also has an optional high decibel audible buzzer that sounds at low battery strength. The Spectrum is designed to work with all popular brands of radio control model systems and will monitor its voltage level at all conditions. This LiPo battery monitor is ideal for all electric R/C models such as helicopters, planes, cars, trucks and boats.