These are 30 mAh lipo batteries wired with JST SH 1 mm connectors and intended for use with Tiny electronic DT timers. The standard battery cable is 18 mm long which is long enough for the two timers I produce. A short cable allows the use to keep the battery close to the timer out out of the way inside the airplane’s fuselage. However, if for some reason a longer battery cable is desired, you can specify a cable length up to 95 mm